All Blog Posts Tagged 'QRQcw' - QRQcw2024-03-28T19:32:56Zhttps://qrqcwnet.ning.com/profiles/blog/feed?tag=QRQcw&xn_auth=noInterrupt Modulated(IM) QRQ CW Mode - Live demo on the VLF bandtag:qrqcwnet.ning.com,2024-03-28:1993813:BlogPost:1418452024-03-28T14:49:03.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
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<p><span>Interrupt Modulated(IM) QRQ CW Mode transmitting and receiving digital information using an analog carrier where the required bandwidth is limited to approximately the frequency of the analog carrier signal. The method is called interrupt modulation and consists of interrupting an un-modulated carrier signal so the…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/Ow4gwOG-Jc0?si=GhQlVI7rZ5kSLPSp&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>Interrupt Modulated(IM) QRQ CW Mode transmitting and receiving digital information using an analog carrier where the required bandwidth is limited to approximately the frequency of the analog carrier signal. The method is called interrupt modulation and consists of interrupting an un-modulated carrier signal so the interruptions correspond directly to the [CW]digital information to be transmitted. (encode/decode by Reagate sidechain in ducking mode plugin) BASIC CONCEPT SETUP: TRANSMITTER a CW keyer, keys the ducking sidechain port of REAGATE plugin interrupting the 4Khz VLF CARRIER wave according to each CW element's duration RECEIVE the opposite is done, a CW SIDETONE is attached to the upper port of a reagate ducking sidechain plugin, and the incoming vlf IMcw signal is attached to the RX regate's ducking sidechain port, and only when the carrier approaches zero signal strength, does it allow the CW SIDETONE to pass through to the headphones modified from this google patents info: <a href="https://patents.google.com/patent/US6194978B1/en">https://patents.google.com/patent/US6194978B1/en</a> for more info on the setup for this, please see this playllist: <a href="https://www.youtube.com/playlist?list=PLfFan4sDonOeaHZKCaqyaYz62WLLyprrn">https://www.youtube.com/playlist?list=PLfFan4sDonOeaHZKCaqyaYz62WLLyprrn</a></span></p>rEvErSe iMaGe CW mode FiGHTS BACK against packet loss during an OPUS CW AUDIO over iP Morse Code QSOtag:qrqcwnet.ning.com,2024-03-23:1993813:BlogPost:1420382024-03-23T13:00:00.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
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<p><span>USING rEvErSe iMaGe CW(riCW) MODE to minimize AUDIO GLITCHEs from poor internet performance with lots of packet dropouts...using an riCW encoder & riCW decoder the riCW encoder injects silence into an audio carrier to represent each CW ELEMENT, the riCW decoder is using CW REGENERATION to convert the silent CW…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/hO1kcRIjJ-Q?si=vCCdNEFhFbwswIpS&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>USING rEvErSe iMaGe CW(riCW) MODE to minimize AUDIO GLITCHEs from poor internet performance with lots of packet dropouts...using an riCW encoder & riCW decoder the riCW encoder injects silence into an audio carrier to represent each CW ELEMENT, the riCW decoder is using CW REGENERATION to convert the silent CW ELEMENTs received into new CW AUDIO TONEs with user adjustable rise/fall time edges riCW encoder & decoder via DUCKING MODE on a REAGATE SIDECHAIN GATE plugin <a href="https://www.reaper.fm/reaplugs/">https://www.reaper.fm/reaplugs/</a></span></p>Remote laptop station keying QRQ CW on Rig over LAN using NETJACK 2: using a pi2b Remote RIG interfacetag:qrqcwnet.ning.com,2024-03-21:1993813:BlogPost:1418382024-03-21T13:52:10.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
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<p><span>ultra-LOW latency REMOTE RIG CW OPERATIONs from a remote laptop on the local area 'wired' network, through router & switches using the NETJACK 2, setup demo from this video:…</span></p>
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<p><iframe width="560" height="315" src="https://www.youtube.com/embed/Sz3ynRjzIY0?si=TwgadmpM6PubY6mq&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>ultra-LOW latency REMOTE RIG CW OPERATIONs from a remote laptop on the local area 'wired' network, through router & switches using the NETJACK 2, setup demo from this video:</span></p>
<p><span><a href="https://youtu.be/QHxPMcTfJ4A?si=0ZjpENIhrDy7EMQ6">https://youtu.be/QHxPMcTfJ4A?si=0ZjpENIhrDy7EMQ6</a></span></p>
<p><span>software CW KEYER APPs used were from RECRI KEYER: <a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>555 harsh raspy square wave CPO output to PURE SINE WAVE shaped CW NOTE output CONVERTER: REAPER DAWtag:qrqcwnet.ning.com,2024-03-08:1993813:BlogPost:1418362024-03-08T13:54:25.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
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<p><span>using native plugins in REAPER DAW, to create a CW Regeneration "RE-KEYER"...- takes a harsh/raspy square wave input from a 555 keyed CPO output, over to the MIC INPUT(green wave on scope) and converts it into a shaped sinewave CW note output, with raised cosine edges, using 3 reaper plugins: Tone Generator, ReaGate,…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/bnvhUi-NTp0?si=3QjWV32qJJdLJM9m&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>using native plugins in REAPER DAW, to create a CW Regeneration "RE-KEYER"...- takes a harsh/raspy square wave input from a 555 keyed CPO output, over to the MIC INPUT(green wave on scope) and converts it into a shaped sinewave CW note output, with raised cosine edges, using 3 reaper plugins: Tone Generator, ReaGate, and the Apple 12 Pole Filter REAGATE is operating in sidechain mode, holding back a pure sine wave at your desired CW PITCH, until REAPER's sidechain is 'keyed' by the 555 square wave keyed CPO's output Reaper puts a 5 ms rise/fall time onto its trapezoid shaped output, and gets shaped further into raised cosine edges by the APPLE 12 bandpass audio FILTER <a href="https://www.reaper.fm/download.php">https://www.reaper.fm/download.php</a></span></p>reVerse iMAGE CW digital Mode - reduce ur Transmit bandwidth by at least halftag:qrqcwnet.ning.com,2024-03-01:1993813:BlogPost:1419422024-03-01T19:49:46.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
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<p><span>experimental setup to send CW by 'keying' SiLENT GAPS into a narrow band 1600 hertz audio sine wave carrier, for transmit via LINE INPUT of your RIG(LSB/USB)</span></p>
<p><span>TRANSMIT ENCODER - by REAGATE's ducking mode output of TX REAGATE goes into a narrow bandpass filter before going to the TRANSMIT line input…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/-bRYFs9mG10?si=_e1MhG1l6mRjEybY&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>experimental setup to send CW by 'keying' SiLENT GAPS into a narrow band 1600 hertz audio sine wave carrier, for transmit via LINE INPUT of your RIG(LSB/USB)</span></p>
<p><span>TRANSMIT ENCODER - by REAGATE's ducking mode output of TX REAGATE goes into a narrow bandpass filter before going to the TRANSMIT line input of the RIG , REAGATE also induces a 15 ms rise/fall time into the SiLENT Gap representing each CW ELEMENT followed by the narrow band AUDIO BANDPASS FILTER before going to the RIG's line input. this is what reduces drastically the TX BANDWIDTH... a CW KEYER's audio output 'keys' this TX REAGATE's ducking input port, producing silent gaps into the 1600 hertz audio carrier wave on this TX regate's 1st port, thus representing each CW ELEMENT from the CW KEYER's output</span></p>
<p><span>RECEIVER DECODER - by REAGATE's ducking mode the output of the RIG goes to the DUCKING input PORT of this RX regate decoder... a sine wave at your desired CW PITCH is on the passthrough port of this RX regate... when the GAPs of NO SIGNAL, are detected by this RX REGATE's ducking port, it opens up the SINE WAVE CW SIGNAL on its 1st port, to pass through to your speakers/headphones etc, the GAP's represent the original CW elements from the reVerse iMAGE CW digital mode TRANSMITTER system</span></p>
<p><span>REAGATE is part of the free VST PLUGINS from REAPER's REAPLUGs <a href="https://www.reaper.fm/reaplugs/">https://www.reaper.fm/reaplugs/</a></span></p>CW iambic KEYER by soundcard, 2 audio transformers & FREE softwaretag:qrqcwnet.ning.com,2024-03-01:1993813:BlogPost:1419402024-03-01T16:08:06.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
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<p><span>using a 21Khz sine wave oscillator signal source, and 2 individual AUDIO THRESHOLD to CW MIDI output GATEs, and the RECRI KEYER's midi input iambic CW Keyer Module, using just one laptop Stereo sound card to route audio stereo audio outputs and stereo audio inputs a way to use just one stereo audio sound card native…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/0sVk2Axs_pY?si=53zYKUuoqHQdm6jo&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>using a 21Khz sine wave oscillator signal source, and 2 individual AUDIO THRESHOLD to CW MIDI output GATEs, and the RECRI KEYER's midi input iambic CW Keyer Module, using just one laptop Stereo sound card to route audio stereo audio outputs and stereo audio inputs a way to use just one stereo audio sound card native to a laptop is used to be able not only KEY iambics at near zero latency but also hear other OP's CW from iCW mumble server, sonobus, ZOOM etc...</span></p>
<p><span>ROUTING PATHWAY 21Khz signal's 'HOT LEAD' goes to iambic paddle's ground lead 21Khz signal's 'GROUND LEAD' goes to ONE side of both transformer inputs leads...(both transformer's input ground's are connected together)</span></p>
<p><span>DIT PADDLE lead goes to other side on 1 transformer's input DAH PADDLE lead goes to other side on 2nd transformer's input</span></p>
<p><span>output of DIT transformer goes to LEFT MIC INPUT</span></p>
<p><span>output of DAH transformer goes to RIGHT MIC INPUT</span></p>
<p><span>2 REAGATE audio threshold to CW MIDI NOTE OUTPUT plugins are connected to L/R mic inputs when the incoming 21Khz, keyed by the paddles arrives, it pushes the volume above the threshold and OUT goes a midi note that key's the RECRI CW iambic KEYER's midi input <a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><span>for more info on this topic of CW REGENERATION methods, see this playlist: <a href="https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147">https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147</a></span></p>usE a FERRiTE TOROiD stepUP Transformer with a 32Khz sinewave to interface your Straight Key T UR PCtag:qrqcwnet.ning.com,2024-02-28:1993813:BlogPost:1419382024-02-28T19:37:14.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
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<p><span>uses REAGATE GATE app to trigger a midi note output from the straight key 32Khz signal input to a sound card line input, output of REAGATE app sends a CW MIDI NOTE to key the RECRI KEYER's CW KEYER module <a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><span>NOTE: this recri…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/2Gu9D6MP9bs?si=JscxAZcY-nti2tXq&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>uses REAGATE GATE app to trigger a midi note output from the straight key 32Khz signal input to a sound card line input, output of REAGATE app sends a CW MIDI NOTE to key the RECRI KEYER's CW KEYER module <a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><span>NOTE: this recri keyer cw keyer module normally is used for iambic keying, using 2 different midi note outputs, however it can also be used as a STRAIGHT KEY only, using just one midi note output/input, midi note "0"</span></p>
<p><span>the TOROID(43) step up transformer provides good isolation from GROUND LOOPs and from CAPACiTiVE COUPLiNG issues from soundcard OUTPUTs & inputS which would otherwise distort the keyed 32khz sine wave SQUARE BLOCKS created by the STRAiGHT KEY sending</span></p>use Reverse Image CW method for super low bit rate OPUS CODEC audio over ip on the mumble iCW servertag:qrqcwnet.ning.com,2024-02-27:1993813:BlogPost:1421322024-02-27T17:29:36.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/g4eQyB8-UbU?si=lyqOto_sBCOIbg_1&wmode=opaque" width="560"></iframe>
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<p><span>virtually perfect CW NOTEs in spite of using the lowest possible OPUS AUDIO CODEC bitrate on Mumble "8Khz"</span></p>
<p><span>- uses the REVERSE IMAGE CW METHOD for injecting silence into an audio stream, representing each CW ELEMENT; breaking up the 150 hertz stream with silent cw element blocks by using a REAGATE…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/g4eQyB8-UbU?si=lyqOto_sBCOIbg_1&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>virtually perfect CW NOTEs in spite of using the lowest possible OPUS AUDIO CODEC bitrate on Mumble "8Khz"</span></p>
<p><span>- uses the REVERSE IMAGE CW METHOD for injecting silence into an audio stream, representing each CW ELEMENT; breaking up the 150 hertz stream with silent cw element blocks by using a REAGATE DUCKING GATE ENCODER for the transmitter , and a REGATE DUCKING GATE deCODER for the receiver</span></p>
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<p><span>for more info on iCW, and Morse Code Audio tones OVER MUMBLE see:</span></p>
<p><span><a href="https://sites.google.com/site/icwoip/">https://sites.google.com/site/icwoip/</a></span></p>Hi Q, tuned, resonant, FERRiTE ROD TRANSMiT VLF ANTENNA for TX'n QRQ CW by a 'key'D square wavetag:qrqcwnet.ning.com,2024-02-27:1993813:BlogPost:1421302024-02-27T14:10:12.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
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<p><span>using high Q, tuned, resonant VLF ferrite TX & RX VLF antennas(4.078Khz) a QRQ CW square wave into the resonant, tuned, high Q, TX antenna produces minimal harmonics...and even less of those harmonics survive by the time the same type of RX ferrite rod high Q, tuned, resonant, antenna removes even more of the…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/BJpn90XR5_g?si=BcGaTAvJ4YuO1DVW&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>using high Q, tuned, resonant VLF ferrite TX & RX VLF antennas(4.078Khz) a QRQ CW square wave into the resonant, tuned, high Q, TX antenna produces minimal harmonics...and even less of those harmonics survive by the time the same type of RX ferrite rod high Q, tuned, resonant, antenna removes even more of the surviving SQUARE WAVE TX harmonics</span></p>
<p><span>this is a QRQ CW example to test how far the TX into a high Q system can be tolerated... 103 wpm at first and then 73 wpm towards the end of the video</span></p>
<p><span>TX ANTENNA: it is a large 10 inch by 1 1/4 inch diy FERRiTE ROD(43) MADE FROM 3 layers of FERRITE CABLE COREs inside each other, primary=4 turns, 2ndary = 400 turns with a resonant cap (.1 uF) attached in parallel to 2ndary's output windings</span></p>
<p><span>RX ANTENNA: is 2 large air dux coils in series, with 20 ferrite rods(61) stacked inside the air dux coils, setup like a TWIN COIL ferrite rod, similar to C.Crane's TWIN COIL ferrite antenna; a tuning CAP across the two coils resonates at 4.078Khz, the TWIN COIL SETUP uses a stepUP transformer between the two coils, HIGH Z, output of transformer goes to sound card SDR's line input a REAGATE VST plugin performs operations for both the TX and RX</span></p>
<p><span>TX: the REAGATE operates as a sidechain gate, only allowing a square wave at 4.078Khz to pass through to the TX antenna according to a CW KEYBOARD keying its sidechain gate</span></p>
<p><span>RX: the REAGATE operates a CW REGENERATOR, to convert the 4khz cw pitch to an adjustable CW audio tone output...and to remove any ringing or cw element elongation from the high Q TX/RX antennas</span></p>
<p><span>more info on using REGATE for CW-RE-KEYER, cw regeneration at this playlist:</span></p>
<p><span><a href="https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147">https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147</a></span></p>
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<p><span><a href="https://www.reaper.fm/reaplugs/">https://www.reaper.fm/reaplugs/</a></span></p>
<p><span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>QRQ CW TX/|\RX high Q resonant VLF FERRiTE ROD antennas - how to combat ringing & element elongationtag:qrqcwnet.ning.com,2024-02-23:1993813:BlogPost:1421242024-02-23T15:53:35.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/3PLF01-r9Ms?si=_FeLSkpQNHtYcJv0&wmode=opaque" width="560"></iframe>
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<p><span>working with 4Khz VLF ferrite rod TRANSMIT and RECEIVE antennas that are High Q & tuned to resonance(see previous 2 videos for the more info on the FERRITE ROD HIGH Q antennas being used for TX & RX on 4Khz VLF):…</span></p>
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<p><iframe width="560" height="315" src="https://www.youtube.com/embed/3PLF01-r9Ms?si=_FeLSkpQNHtYcJv0&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>working with 4Khz VLF ferrite rod TRANSMIT and RECEIVE antennas that are High Q & tuned to resonance(see previous 2 videos for the more info on the FERRITE ROD HIGH Q antennas being used for TX & RX on 4Khz VLF):</span></p>
<p><span><a href="https://youtu.be/LQ82YZHwFvA">https://youtu.be/LQ82YZHwFvA</a></span></p>
<p><span><a href="https://youtu.be/N6ETTy1Sf6g">https://youtu.be/N6ETTy1Sf6g</a></span></p>
<p><span>to combat RINGING and CW ELEMENT ELONGATION, the CW ELEMENTs are 1st CHOPPED by 23 milliseconds by the CW KEYBOARD VLF TRANSMITTER app, and then after RX by a soundcard SDR, the elements are sent to a CW REGEN software setup that adds back the 23 milliseconds (for more info on CW REGEN software setup operations...see this playlist: <a href="https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147">https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147</a></span></p>
<p><span>soundcard SDR SOFTWARE, CW KEYER and CW KEYBOARD and SDR MODULES are all from RECRI KEYER: <a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><span>CW REGENERATION by REAGATE and RECRI KEYER's CW KEYER app:</span></p>
<p><span>REAPER's REAGATE VST plugin, measures the threshold signal strength on the rise & fall time of each CW ELEMENT, then produces a CW MIDI NOTE output based on that measurement...by adjusting the options on both the CW KEYBOARD's compensation and the REAGATE's 'HOLD' option, proper CW TIMING is restored for the CW speed being used...the REAGATE midi note output 'keys' the RECRI KEYER's CPO app that has an adjustable pitch, rise/fall times etc...</span></p>ReaGate VST plugin - audio to CW midi NOTE output to midi input keyed, RECRI KEYER's iAMbic CW Keyertag:qrqcwnet.ning.com,2023-12-28:1993813:BlogPost:1417762023-12-28T18:34:07.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/2y65b7xwlbw?si=_QnNRQFlJprbicnF&wmode=opaque" width="560"></iframe>
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<p><span>RECRI KEYER's MIDI INPUT KEYED CW KEYER:</span></p>
<p><span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><span>AUDIO TO Midi CW NOTE OUTPUT converter by REAPER/reagate VST plugin…</span></p>
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<p><iframe width="560" height="315" src="https://www.youtube.com/embed/2y65b7xwlbw?si=_QnNRQFlJprbicnF&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span>RECRI KEYER's MIDI INPUT KEYED CW KEYER:</span></p>
<p><span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><span>AUDIO TO Midi CW NOTE OUTPUT converter by REAPER/reagate VST plugin</span></p>
<p><span><a href="https://www.reaper.fm/download.php">https://www.reaper.fm/download.php</a> <a href="https://www.kvraudio.com/product/reagate_by_cockos">https://www.kvraudio.com/product/reagate_by_cockos</a></span></p>using "FriTure"(A Real Time Audio Analyzer) for Morse Code Audio SPECTRUM, SCOPE & WAVEform analysistag:qrqcwnet.ning.com,2023-12-28:1993813:BlogPost:1416142023-12-28T14:31:51.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/pSM3CrIz9Wk?si=T5OeFHAV1P9_bsGx&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span><a href="https://friture.org/%C2%A0">https://friture.org/ </a>; has versions for WINDOWS, MAC, and Linux</span></p>
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<p><span>RECRI KEYER's CW KEYBOARD, FILT & MIXER modules used in this video demo:</span></p>
<p><span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/pSM3CrIz9Wk?si=T5OeFHAV1P9_bsGx&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
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<p><span><a href="https://friture.org/%C2%A0">https://friture.org/ </a>; has versions for WINDOWS, MAC, and Linux</span></p>
<p></p>
<p><span>RECRI KEYER's CW KEYBOARD, FILT & MIXER modules used in this video demo:</span></p>
<p><span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>VOiCE, Morse Code AND miniModem VLF Text Messaging over a 1 channel AUDiO over iP Gstreamer PiPElinetag:qrqcwnet.ning.com,2023-12-24:1993813:BlogPost:1416122023-12-24T12:55:12.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/qETeiy0Pdns?si=RKdPInVZ9e4gUzJi&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>CW Keyboard, soundcard SDR MODULEs MIXER & FiLT from RECRI KEYER:</span></p>
<p><span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/qETeiy0Pdns?si=RKdPInVZ9e4gUzJi&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>CW Keyboard, soundcard SDR MODULEs MIXER & FiLT from RECRI KEYER:</span></p>
<p><span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>attention POTA SOTA OPs: save 90 percent battery drain on transmitter PA by using a Pulse Density Modulated CW(PDM-CW) Generator by chatGPT C CODE - Live DEMO @30wpmtag:qrqcwnet.ning.com,2023-12-18:1993813:BlogPost:1415782023-12-18T22:43:39.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/HdmlFfOYqX4?si=crtSF9FYanI2K6vD&wmode=opaque" width="560"></iframe>
</p>
<p><span>save 90 percent of your final power amp's battery drain using PDM-CW</span></p>
<p><span>instead of sending the full cw element length to the final PA,</span></p>
<p><span>PDM-CW sends 1 ms pulses per every 10 ms of cw element instead...</span></p>
<p><span>the receiver software patches back in the missing breaks in…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/HdmlFfOYqX4?si=crtSF9FYanI2K6vD&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>save 90 percent of your final power amp's battery drain using PDM-CW</span></p>
<p><span>instead of sending the full cw element length to the final PA,</span></p>
<p><span>PDM-CW sends 1 ms pulses per every 10 ms of cw element instead...</span></p>
<p><span>the receiver software patches back in the missing breaks in each cw element,</span></p>
<p><span>restoring the original CW ELEMENT length</span></p>
<p></p>
<p><span>here is the initial code generated by chatGPT 3.5:</span></p>
<p><span><a href="https://u.pcloud.link/publink/show?code=XZV8A70ZeJWMJa2iiNfWU61gvhEEO5hSnJPk">https://u.pcloud.link/publink/show?code=XZV8A70ZeJWMJa2iiNfWU61gvhEEO5hSnJPk</a></span></p>Low Latency REMOTE RiG, FULL DUPLEX, QRQ CW operations: 2 WAY audio, via Raspberry Pi interface & open source softwaretag:qrqcwnet.ning.com,2023-11-22:1993813:BlogPost:1411132023-11-22T20:28:06.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/2qVzzhKLtiE?si=tYS_9e7sEfC4PpSY&wmode=opaque" width="560"></iframe>
</p>
<p><span>QRQ CW example, by, AUDIO OVER iP via a GSTREAMER raspberry pi TCP AUDIO SERVER and a GSTREAMER laptop TCP AUDIO CLIENT, organized by two PYTHON scripts.</span></p>
<p><span>- you can download the TCP SERVER and CLIENT python scripts here:</span></p>
<p><span>PYTHON/gstreamer TCP SERVER:…</span></p>
<p></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/2qVzzhKLtiE?si=tYS_9e7sEfC4PpSY&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>QRQ CW example, by, AUDIO OVER iP via a GSTREAMER raspberry pi TCP AUDIO SERVER and a GSTREAMER laptop TCP AUDIO CLIENT, organized by two PYTHON scripts.</span></p>
<p><span>- you can download the TCP SERVER and CLIENT python scripts here:</span></p>
<p><span>PYTHON/gstreamer TCP SERVER:</span></p>
<p><span><a href="https://u.pcloud.link/publink/show?code=XZBCNoVZhgQdEcKxlnpV83yxEcbrafkuIs07">https://u.pcloud.link/publink/show?code=XZBCNoVZhgQdEcKxlnpV83yxEcbrafkuIs07</a></span></p>
<p><span>PYTHON/gstreamer TCP CLIENT:</span></p>
<p><span><a href="https://u.pcloud.link/publink/show?code=XZsCNoVZbun58NEdIzHmWwnK0h5Bmke6N11V">https://u.pcloud.link/publink/show?code=XZsCNoVZbun58NEdIzHmWwnK0h5Bmke6N11V</a></span></p>
<p><span>NOTE: </span>the PTT tone(5555hz) does not get transmitted, since the K3S has a brick wall low pass filter at 4Khz...only a tiny volume of 5555hz audio tone is needed to activate the RIG's transmit vox circuit...and is easily filtered out by a BAND-REJECT filter at the REMOTE OP's PC RECRI KEYER(github) provided all the CW SOFTWARE in this demo: <a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></p>using HAM RADIO DiY electronics(including MORSE CODE methods), to create and use your own homebrewed MicroCurrent, pEMF, ElectroAcupuncture Healing Therapy Devicestag:qrqcwnet.ning.com,2023-10-30:1993813:BlogPost:1409972023-10-30T18:00:00.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><span style="font-size: 14pt;">see this ongoing PLAYLIST with many examples:</span></p>
<p><span style="font-size: 14pt;"><a href="https://www.youtube.com/playlist?list=PLfFan4sDonOeK0ipjeVQOkYtV51ogBifV" rel="noopener" target="_blank">https://www.youtube.com/playlist?list=PLfFan4sDonOeK0ipjeVQOkYtV51ogBifV…</a></span></p>
<p></p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/12271480084?profile=original" rel="noopener" target="_blank"><img class="align-full" src="https://storage.ning.com/topology/rest/1.0/file/get/12271480084?profile=RESIZE_710x"></img></a></p>
<p></p>
<p></p>
<p><span style="font-size: 14pt;">see this ongoing PLAYLIST with many examples:</span></p>
<p><span style="font-size: 14pt;"><a href="https://www.youtube.com/playlist?list=PLfFan4sDonOeK0ipjeVQOkYtV51ogBifV" target="_blank" rel="noopener">https://www.youtube.com/playlist?list=PLfFan4sDonOeK0ipjeVQOkYtV51ogBifV</a></span></p>
<p></p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/12271480084?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/12271480084?profile=RESIZE_710x" class="align-full"/></a></p>
<p></p>
<p><span style="font-size: 18pt;"><a href="https://alpha-stim.com/research-and-reports/" target="_blank" rel="noopener">https://alpha-stim.com/research-and-reports/</a></span></p>
<p></p>
<p><span style="font-size: 18pt;"><a href="https://alpha-stim.com/how-alpha-stim-technology-works/acute-and-chronic-pain-treatment/" target="_blank" rel="noopener">https://alpha-stim.com/how-alpha-stim-technology-works/acute-and-chronic-pain-treatment/</a></span></p>
<p></p>
<p><span style="font-size: 18pt;"><a href="https://pubmed.ncbi.nlm.nih.gov/7140077/" target="_blank" rel="noopener">https://pubmed.ncbi.nlm.nih.gov/7140077/</a></span></p>
<p><span style="font-size: 24px;">an example of one of the circuits used:</span></p>
<p><span style="font-size: 24px;"><a href="https://storage.ning.com/topology/rest/1.0/file/get/12271511660?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/12271511660?profile=RESIZE_710x" class="align-full"/></a></span></p>
<p></p>
<p></p>
<p></p>DiY TWiN COiL FERRiTE ROD VLF band RX Antenna - QRQ CW RX test - built from C. CRANE's TWiN COiL google patent infotag:qrqcwnet.ning.com,2023-10-19:1993813:BlogPost:1409922023-10-19T13:21:22.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/_5OP6TjkN1s?si=kgRMqjpWV3bh1efZ&wmode=opaque" width="560"></iframe>
</p>
<p><span>using the info at GOOGLE PATENTs, this "TUNED" twin coil ferrite rod loopstick VLF Receive Antenna was put together from some spare parts in the shack, for a test run at 32Khz for receiving a QRQ CW signal at 32Khz…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/_5OP6TjkN1s?si=kgRMqjpWV3bh1efZ&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>using the info at GOOGLE PATENTs, this "TUNED" twin coil ferrite rod loopstick VLF Receive Antenna was put together from some spare parts in the shack, for a test run at 32Khz for receiving a QRQ CW signal at 32Khz <a href="https://patents.google.com/patent/US6529169B2/en">https://patents.google.com/patent/US6529169B2/en</a></span></p>Pulse Density Modulated CW(PDM-CW) by CW KEYBOARD sending binaural beats via 2 sine wave oscillatorstag:qrqcwnet.ning.com,2023-10-05:1993813:BlogPost:1409892023-10-05T12:08:45.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/AdDWdlpGiJE?si=ftlLzhP3mTI3msIU&wmode=opaque" width="560"></iframe>
</p>
<p><span>in AFCW mode, a CW KEYBOARD keys 2 sine wave oscillators at 1500 hertz & 1520 hertz, the beat frequency creates the PULSE DENSITY MODULATED CW beat frequency that will become the PDM-CW TRANSMIT SIGNAL sending to the TRANSMIT INPUT on LSB at 1500 hertz(AFCW MODE)</span></p>
<p><span>on RECEIVE, trigger midi mono…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/AdDWdlpGiJE?si=ftlLzhP3mTI3msIU&wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>in AFCW mode, a CW KEYBOARD keys 2 sine wave oscillators at 1500 hertz & 1520 hertz, the beat frequency creates the PULSE DENSITY MODULATED CW beat frequency that will become the PDM-CW TRANSMIT SIGNAL sending to the TRANSMIT INPUT on LSB at 1500 hertz(AFCW MODE)</span></p>
<p><span>on RECEIVE, trigger midi mono will decode the pdm-cw'D - "broken" CW notes, and create a FULL CW NOTE midi output that keys a final midi input CW CPO app with adjustable pitch, rise/fall time, envelope etc...</span></p>
<p><span>RECRI KEYER provides the KEYBOARD and filters and CPO apps <a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>
<p><span>TRIGGER MIDI MONO <a href="https://lsp-plug.in/?page=manuals&section=trigger_midi_mono">https://lsp-plug.in/?page=manuals&section=trigger_midi_mono</a></span></p>Pi4 40Khz CW Transmitter output to HEADHONE JACK: to diode/transformer frequency doubler/amp/antennatag:qrqcwnet.ning.com,2023-07-21:1993813:BlogPost:1401012023-07-21T17:43:29.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/UGflLodoHJE?wmode=opaque" width="560"></iframe>
</p>
<p><span>brief demo of using a simple DIODE/TRANSFORMER frequency doubler to get 40Khz CW out of a pi4 headphone jack, by sending to the diode doubler input, 20Khz from the pi's headphone jack</span></p>
<p><span>Pi4 HEADPHONE PHONE to diode/transformer/frequency doubler to class D amp input, CLASS D OUTPUT to a series resonant cap to a FERRITE ROD…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/UGflLodoHJE?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>brief demo of using a simple DIODE/TRANSFORMER frequency doubler to get 40Khz CW out of a pi4 headphone jack, by sending to the diode doubler input, 20Khz from the pi's headphone jack</span></p>
<p><span>Pi4 HEADPHONE PHONE to diode/transformer/frequency doubler to class D amp input, CLASS D OUTPUT to a series resonant cap to a FERRITE ROD TRANSMIT ANTENNA....</span></p>
<p><span>receiver = sound card sdr's MIC INPUT JACK from its own FERRITE ROD RX ANTENNA to HILBERT CELL, to FILT MODULE, to LO-MIXER module all from: RECRI KEYER :</span> <span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span></p>diy Remote Rig Audio over LAN - low latency setup for remote iambic CW operationstag:qrqcwnet.ning.com,2023-07-15:1993813:BlogPost:1398952023-07-15T11:30:00.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p></p>
<p><span>full duplex, REMOTE RIG audio over the LAN, via GSTREAMER</span></p>
<p><span style="font-size: 14pt;"><a href="https://rumble.com/v2zzcn8-diy-remote-rig-audio-over-lan-low-latency-setup-for-remote-iambic-cw-operat.html?mref=egp3h&mc=atgdc">https://rumble.com/v2zzcn8-diy-remote-rig-audio-over-lan-low-latency-setup-for-remote-iambic-cw-operat.html?mref=egp3h&mc=atgdc…</a></span></p>
<p></p>
<p></p>
<p><span>full duplex, REMOTE RIG audio over the LAN, via GSTREAMER</span></p>
<p><span style="font-size: 14pt;"><a href="https://rumble.com/v2zzcn8-diy-remote-rig-audio-over-lan-low-latency-setup-for-remote-iambic-cw-operat.html?mref=egp3h&mc=atgdc">https://rumble.com/v2zzcn8-diy-remote-rig-audio-over-lan-low-latency-setup-for-remote-iambic-cw-operat.html?mref=egp3h&mc=atgdc</a></span></p>
<p><a href="https://storage.ning.com/topology/rest/1.0/file/get/12149137700?profile=original" target="_blank" rel="noopener"><img src="https://storage.ning.com/topology/rest/1.0/file/get/12149137700?profile=RESIZE_710x" width="721" class="align-full"/></a></p>
<p></p>
<p><span>using a Raspberry pi interface on the RIG(using the rig's own internal usb sound card)</span></p>ELF through VLF UNiVERSAL Frequency CONVERTER to Morse Code AUDiO: by STEVE HARRiS's DiODE PROCESSORtag:qrqcwnet.ning.com,2023-07-13:1993813:BlogPost:1400792023-07-13T16:19:24.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/ybyYLR9YLNo?wmode=opaque" width="560"></iframe>
</p>
<p><span>FROM STEVE HARRIS SWH PLUGINS DIODE PROCESSOR 2.32 Diode Processor (diode, 1185) Mangles the signal as if it had been passed through a diode rectifier network.You should probably follow this with a DC offset remover, unless you want the offset. Mode (0 for none, 1 for half wave, 2 for full wave) The mode parameter is continuously variable…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/ybyYLR9YLNo?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>FROM STEVE HARRIS SWH PLUGINS DIODE PROCESSOR 2.32 Diode Processor (diode, 1185) Mangles the signal as if it had been passed through a diode rectifier network.You should probably follow this with a DC offset remover, unless you want the offset. Mode (0 for none, 1 for half wave, 2 for full wave) The mode parameter is continuously variable from thru to half-wave rectification to full-wave to silence.</span> <span><a href="http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html#tth_sEc2.32">http://plugin.org.uk/ladspa-swh/docs/ladspa-swh.html#tth_sEc2.32</a></span> <span>DIODE PROCESSOR prepares incoming ELF/VLF CW signal for the REAGATE plugin's INPUT....output of REAGATE is a midi cw note based on the analysis of the ELF/VLF CW SIGNAL at REAGATE's input port....regate 'key's the next APP a CW KEYER from RECRI KEYER:</span> <span><a href="https://github.com/recri/keyer">https://github.com/recri/keyer</a></span> <span>recri</span></p>
<p><span>cw keyboard is the TRANSMITTER at ELF to VLF... output of cw keyboard goes to a TRANSMIT FERRITE ROD ANTENNA... receive ferrite rod antenna is connected to a RAPSBERRY PI's usb sound card's input...pi4 sends the RX ANTENNA SIGNAL, over iP, back to the LAPTOP for input to DIODE PROCESSOR/regate/recri keyer etc... NOTE: bottom scope on video is just 'after' the diode processor plugin</span></p>enGage a Gate, to get rid of QRQ CW, NARROW BAND, high "q", ringing on CW RECEIVE SIGNAL - LiVE DEMOtag:qrqcwnet.ning.com,2023-05-31:1993813:BlogPost:1400422023-05-31T12:29:28.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/57Nq9gCeCv4?wmode=opaque" width="560"></iframe>
</p>
<p><span>brief demo using a simple GATE plugin, to STOP QRQ CW Ringing on the RECEIVE SIGNAL</span></p>
<p><span>gate is placed after antenna input, and before final CW AUDIO bandpass filter</span></p>
<p><span>GATE used in this example is from CALF STUDIO GEAR…</span></p>
<p></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/57Nq9gCeCv4?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>brief demo using a simple GATE plugin, to STOP QRQ CW Ringing on the RECEIVE SIGNAL</span></p>
<p><span>gate is placed after antenna input, and before final CW AUDIO bandpass filter</span></p>
<p><span>GATE used in this example is from CALF STUDIO GEAR</span></p>
<p><span><a href="https://calf-studio-gear.org/">https://calf-studio-gear.org/</a></span></p>extreme DATA RATE for an EXTREME NARROW BAND QRQ CW signal - on the ELF band - 12 hertztag:qrqcwnet.ning.com,2023-05-27:1993813:BlogPost:1394632023-05-27T17:42:15.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p>using the ENB-CW method of encoding/decoding</p>
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/_C6jeophFK0?wmode=opaque" width="560"></iframe>
</p>
<p><span>brief test to see how well using the ENB-CW method to transmit and receive 12 hertz ELF EMF - for RADIO COMMs of a 'THROUGH THE EARTH' Cave Radio Transceiver prototype</span></p>
<p><span>NOTE: not shown on video is the MIXER, that up-converts the 12 hertz ENB-CW carrier to a 782 hertz…</span></p>
<p>using the ENB-CW method of encoding/decoding</p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/_C6jeophFK0?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>brief test to see how well using the ENB-CW method to transmit and receive 12 hertz ELF EMF - for RADIO COMMs of a 'THROUGH THE EARTH' Cave Radio Transceiver prototype</span></p>
<p><span>NOTE: not shown on video is the MIXER, that up-converts the 12 hertz ENB-CW carrier to a 782 hertz ENB-CW carrier... and then the ZAMGATE ENB-CW DECODER extracts the micro-embedded CW KEYING data off of the MICRO-MODULATED UP-CONVERTED carrier wave, and into the CW AUDIO NOTEs that you hear on this video demo...</span></p>
<p><span>HERE IS A SCREEN SHOT of the up-converted 12hz to 782hz CARRIER where you can see the CW KEYING DATA embedded onto the surfaces of the CARRIER WAVE:</span> <span><a href="https://imgur.com/SBftsTn">https://imgur.com/SBftsTn</a></span></p>
<p><span>for more info on EXTREME NARROW BAND CW, please see this playlist:</span> <span><a href="https://www.youtube.com/playlist?list=PLfFan4sDonOf2O3s6PKh4fnDhEXrRaBut">https://www.youtube.com/playlist?list=PLfFan4sDonOf2O3s6PKh4fnDhEXrRaBut</a></span></p>
<p><span>this 12 hertz enb-cw was tested for its possible use as a THROUGH THE EARTH transceiver for a Cave to Surface/Surface to Cave RADIO system:</span> <span><a href="https://www.youtube.com/playlist?list=PLfFan4sDonOdYNelBw7UtQPfEBcrbU11C">https://www.youtube.com/playlist?list=PLfFan4sDonOdYNelBw7UtQPfEBcrbU11C</a></span></p>
<p></p>VLF QRQ CW Transmitter: keying a TLC551 [sq, wave osc.] to CLASS D audio amp to high Q Ferrite Resonant Antennatag:qrqcwnet.ning.com,2023-05-23:1993813:BlogPost:1394292023-05-23T16:34:20.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/zSoQj4E6A70?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>this is a follow up video from the 1st one here:</span></p>
<p><span>for more info on the VLF TRANSMITTER SETUP see this video's description:</span></p>
<p><span><a href="https://youtu.be/FyYHmT7POKA">https://youtu.be/FyYHmT7POKA</a></span></p>
<p><span>in this video, an MFJ451 CW KEYBOARD keys the TLC551 at QRQ speeds</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/zSoQj4E6A70?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>this is a follow up video from the 1st one here:</span></p>
<p><span>for more info on the VLF TRANSMITTER SETUP see this video's description:</span></p>
<p><span><a href="https://youtu.be/FyYHmT7POKA">https://youtu.be/FyYHmT7POKA</a></span></p>
<p><span>in this video, an MFJ451 CW KEYBOARD keys the TLC551 at QRQ speeds</span></p>QRQ CW on VLF band @5Khz @75wpm: alternative RX method using a soundcard SDR and HiGH "Q" antennastag:qrqcwnet.ning.com,2023-05-20:1993813:BlogPost:1396262023-05-20T16:45:18.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/C8Jey-l4dps?wmode=opaque" width="560"></iframe>
</p>
<p><span>with high Q antennas systems for RX/TX there is too much ringing & cw element elongation for good copy retrieval from the SDR down conversion from 5Khz to CW AUDIO... an alternative to straight mixing is to REGENERATE the CW from its unusable ringing cw elements...however, the elements volume peaks have to be equalized in volume by a DSP…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/C8Jey-l4dps?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>with high Q antennas systems for RX/TX there is too much ringing & cw element elongation for good copy retrieval from the SDR down conversion from 5Khz to CW AUDIO... an alternative to straight mixing is to REGENERATE the CW from its unusable ringing cw elements...however, the elements volume peaks have to be equalized in volume by a DSP PLUGIN - a LIMITER - in order to provide a good cw audio source for the CW REGENERATOR INPUT apps ZAMGATE SIDECHAIN GATE & a pure sine wave oscillator see here for more info on the CW RE-Keyer system used in this demo:</span> <span><a href="https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147">https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147</a></span></p>Pulse Density Modulated QRQ CW test @80wpm on the ULF BAND through high Q, resonant Ferrite Antennastag:qrqcwnet.ning.com,2023-05-19:1993813:BlogPost:1395262023-05-19T12:32:36.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/faQdNYKsmm8?wmode=opaque" width="560"></iframe>
</p>
<p><span>brief test to see if QRQ CW at 80 wpm could be PULSE DENSITY MODULATED effectively for transmit/receive on the ULF BAND at 1.784 Khz using very high Q resonant ferrite rod loopstick TX/RX antennas</span></p>
<p><span>for more info on PULSE DENSITY MODULATED CW(PDM-CW) please see this playlist:…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/faQdNYKsmm8?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>brief test to see if QRQ CW at 80 wpm could be PULSE DENSITY MODULATED effectively for transmit/receive on the ULF BAND at 1.784 Khz using very high Q resonant ferrite rod loopstick TX/RX antennas</span></p>
<p><span>for more info on PULSE DENSITY MODULATED CW(PDM-CW) please see this playlist: <a href="https://www.youtube.com/playlist?list=PLfFan4sDonOfd-46mK93s1v5em5BMIsNE">https://www.youtube.com/playlist?list=PLfFan4sDonOfd-46mK93s1v5em5BMIsNE</a></span></p>
<p><span>the TICK STREAM, 1 sine wave cycle of 1.784Khz per every 7.5 milliseconds was the 'key' to getting it to key correctly and be regenerated effectively by the ZAMGATE PDM-CW encoder/decoder at 80 wpm: gst-launch-1.0 -v audiotestsrc wave=ticks tick-interval=7500000 sine-periods-per-tick=1 freq=1784 volume=.9 ! audio/x-raw, channels=1, rate=48000 ! audioconvert ! jackaudiosink</span></p>get rid of HIGH Q Ringing on QRQ CW by using a LiMiTER & CW Regeneratortag:qrqcwnet.ning.com,2023-05-18:1993813:BlogPost:1395232023-05-18T14:17:37.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/1zchCVP-UH8?wmode=opaque" width="560"></iframe>
</p>
<p><span>with high Q ringing on a QRQ CW signal, by high Q filters &/or high Q antennas, you are going to get CW ELEMENT RINGING and CW ELEMENT ELONGATION which distorts the typical wave shape of the DITs and DAHS... especially on the DITs...the elongation will decrease its volume since the element takes to long to reach peak output compared to a…</span></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/1zchCVP-UH8?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>with high Q ringing on a QRQ CW signal, by high Q filters &/or high Q antennas, you are going to get CW ELEMENT RINGING and CW ELEMENT ELONGATION which distorts the typical wave shape of the DITs and DAHS... especially on the DITs...the elongation will decrease its volume since the element takes to long to reach peak output compared to a dah at QRQ SPEEDS...etc.. to this demo shows a method to circumvent this issue... 1st a peak limiter app is used to even out the HIGH Q CW PEAKs on the RX signal and then send the output of the limiter to a CW RE-GENERATION/CW-RE-KEYing setup this demo uses ZAMGATE in sidechain mode/ a sine wave sidetone oscillator and a post cw audio bandpass filter</span></p>
<p><span>after the QRQ CW peaks have been evened out they are used to 'KEY' the sidechain port of ZAMGATE... ZAMGATE is holding back a pure sine wave oscillator sidetone, until it gets KEYED on its sidechain port by the peaks of the LIMITER's output... then the sine wave passes out through ZAMGATE, after dialing in the RISE/FALL time you want on the ZAMGATE CONTROLs... goes to a final CW AUDIO bandpass filter and then to headphones...</span></p>sending QRQ CW over iP on LF BAND using CW notes made of 8Khz wide, white & violet noise CW elementstag:qrqcwnet.ning.com,2023-05-09:1993813:BlogPost:1393352023-05-09T22:25:55.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/l_fIPtIVZZw?wmode=opaque" width="560"></iframe>
</p>
<p><span>WHiTE and ViOLET Noise are combined and filtered</span></p>
<p><span>to only transmit from 40Khz to 48Khz</span></p>
<p><span>and this noise is used to create CW NOTEs that are 8Khz wide on the LF BAND</span></p>
<p></p>
<p><span>uses CW RE-KEYING methods shown on this playlist:…</span></p>
<p></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/l_fIPtIVZZw?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>WHiTE and ViOLET Noise are combined and filtered</span></p>
<p><span>to only transmit from 40Khz to 48Khz</span></p>
<p><span>and this noise is used to create CW NOTEs that are 8Khz wide on the LF BAND</span></p>
<p></p>
<p><span>uses CW RE-KEYING methods shown on this playlist:</span></p>
<p><span><a href="https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147">https://www.youtube.com/playlist?list=PLfFan4sDonOdFGeEDASG8tcadafHQU147</a></span></p>CW KEYER SQUARE WAVE output converted to SHAPED SiNE WAVE output by LSP SiDECHAiN & LSP OSCiLLATORtag:qrqcwnet.ning.com,2023-05-08:1993813:BlogPost:1388042023-05-08T19:16:43.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/veyYwE9UUCo?wmode=opaque" width="560"></iframe>
</p>
<p><span>SQUARE WAVE to SHAPED SINE WAVE CONVERTER using 2 plugins from LSP</span></p>
<p><span>1. LSP SIDECHAIN MONO</span></p>
<p><span>2. LSP OSCILLATOR MONO</span></p>
<p><span><a href="https://lsp-plug.in/?page=manuals&section=oscillator_mono">https://lsp-plug.in/?page=manuals&section=oscillator_mono…</a></span></p>
<p></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/veyYwE9UUCo?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>SQUARE WAVE to SHAPED SINE WAVE CONVERTER using 2 plugins from LSP</span></p>
<p><span>1. LSP SIDECHAIN MONO</span></p>
<p><span>2. LSP OSCILLATOR MONO</span></p>
<p><span><a href="https://lsp-plug.in/?page=manuals&section=oscillator_mono">https://lsp-plug.in/?page=manuals&section=oscillator_mono</a></span></p>
<p><span><a href="https://lsp-plug.in/?page=manuals&section=sc_gate_mono">https://lsp-plug.in/?page=manuals&section=sc_gate_mono</a></span></p>
<p></p>
<p><span>how it works - a CW KEYER's harsh square wave is keying the sidechain port on LSP SIDECHAIN MONO...when that port is 'keyed', it allows a sine wave to pass through and get 'shaped' by the controls... and outputs a nicely shaped CW NOTE that can be adjusted by the controls on LSP OSCILLATOR MONO to any cw pitch you prefer</span></p>VLF QRQ CW RX signal gets direct conversion to CW AUDIO by LSP Sine Wave Oscillator & Sidechain Gatetag:qrqcwnet.ning.com,2023-05-08:1993813:BlogPost:1387922023-05-08T13:44:54.000ZChuck aa0hwhttps://qrqcwnet.ning.com/profile/chase
<p><iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/8YbnQCRdgMU?wmode=opaque" width="560"></iframe>
</p>
<p><span>only 2 LSP Plugins are needed for DIRECT CONVERSION from VLF CW to AUDIO CW</span></p>
<p><span><a href="https://lsp-plug.in/?page=manuals&section=oscillator_mono">https://lsp-plug.in/?page=manuals&section=oscillator_mono…</a></span></p>
<p></p>
<p><iframe width="560" height="315" src="https://www.youtube.com/embed/8YbnQCRdgMU?wmode=opaque" frameborder="0" allowfullscreen=""></iframe>
</p>
<p><span>only 2 LSP Plugins are needed for DIRECT CONVERSION from VLF CW to AUDIO CW</span></p>
<p><span><a href="https://lsp-plug.in/?page=manuals&section=oscillator_mono">https://lsp-plug.in/?page=manuals&section=oscillator_mono</a></span></p>
<p><span><a href="https://lsp-plug.in/?page=manuals&section=sc_gate_mono">https://lsp-plug.in/?page=manuals&section=sc_gate_mono</a></span></p>
<p></p>
<p><span>for VLF RECEIVE, a sound card's line input is being used with a FERRITE ROD LOOPSTICK ANTENNA attached to the LINE INPUT runs straight over to the input of LSP PLUGIN SIDECHAIN GATE MONO LV2 plugin</span></p>
<p></p>
<p><span>one of the advantages of LSP PLUGINs for DIRECT CONVERSION/ is that the LSP PLUGIN SIDECHAIN GATE has a CW FILTER that can be adjusted to output a very nice shaped CW NOTE according to your preference for HARD/SOFT keying on the CW ELEMENT edges... (no need for a 3rd plugin that does bandpass filtering etc..)</span></p>