Chuck aa0hw's Blog (95)

Raspberry PI CW KEYER - CW Keyboard, Rig control & Log book- all with FLdigi

this video LIVE demo is using a Raspberry PI 2b and FLdigi together as a CW KEYER, remote rig control AND a logging book...

- FLdigi does it ALL !

- A BIG THANK YOU TO W1HKJ !!

- this setup does not tax the pi's cpu and runs perfectly

the first part of the video demo's receiving a station on 40 meters and changing some of…

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Added by Chuck aa0hw on November 2, 2017 at 9:38am — No Comments

Optimizing the Elecraft K3 CW TRANSMIT for FULL QSK at QRQ CW using FLdigi and 2 circuits

This video demos's a RASPBERRY PI using FLdigi which is sending out a stereo signal from the pi's own analogue sound card to 2 individual audio derived cw circuits: see here: http://qrqcwnet.ning.com/forum/topics/what-circuit-for-computer

one keying circuit keys…

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Added by Chuck aa0hw on October 30, 2017 at 2:00pm — No Comments

QSO qrq CW with another CW OP over the internet using just a simple VST, LV2, or AU plugin called - Studio-Link

Short demo of a MORSE CODE AUDIO sidetone QSO over the internet between 2 CW OPS using the FREE LV2 plugin - STUDIO-LINK -…

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Added by Chuck aa0hw on October 7, 2017 at 8:43am — No Comments

Remote CW Keying over the internet of an Elecraft K3S - QRQ CW test - 80 wpm

Using an audio derived cw keying circuit to key CW on the K3S : http://qrqcwnet.ning.com/forum/topics/what-circuit-for-computer

- with the circuit attached to the K3S cw keying jack...and being key'ed remotely via a voice chat program called MUMBLE:…

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Added by Chuck aa0hw on August 14, 2017 at 11:40am — 2 Comments

Automatic Volume Level Control - AGC - with the LINUX Audio APP - VLeveL - Live demo

using MUMBLE and MORSE CODE audio tones, and varying the Mumble output volume from 15 percent to 200 percent, this video demo's VLevel keeping the volume output of Mumble to be extremely stable at a near zero DB final audio output to the sound card, no matter the level of volume at VLeveL's input...VLevel is acting as an AUTOMATIC GAIN CONTROL,…

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Added by Chuck aa0hw on August 8, 2017 at 8:00am — No Comments

Morse Code audio QSO over IP - using the WIRE DESKTOP APP

Brief demo of what a morse code audio QSO over IP sounds like - using the WIRE DESKTOP APP

The Wire Desktop APP software

https://wire.com/en/

https://github.com/wireapp/wire-desktop

Description

Secure, end-to-end encrypted messenger…

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Added by Chuck aa0hw on July 21, 2017 at 1:20pm — 1 Comment

using the LINUX LV2 PLUGIN - Trigger Midi Mono - as a morse code practice oscillator

SETUP: an UltraPico Keyer, keys a 555 TIMER CHIP..from the audio output of the 555, an audio cable is attached and goes to the input of a laptop's mic jack input...the 555 time chip sidetone is very rough sounding with lots of high pitched harmonics and key clicks...INSTEAD of trying to filter the 555's raspy tone, this video demo's using TRIGGER…

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Added by Chuck aa0hw on June 25, 2017 at 11:01am — 9 Comments

Multi CW OP - Morse Code QSO'n over the internet - with this free STEREO AUDIO CONFERENCING APP

SEREN - FULL MESH, P2P AUDIO, FULL DUPLEX, HIGH FIDELITY, with adjustable bit rate..mono or stereo....using the OPUS CODEC



- LIVE DEMO SETUP -

1st SEREN OPERATOR, will act as the Central SEREN NODE using a Raspberry Pi that is always "ON"...two more SEREN operators will connect to the PI's SEREN NODE and automatically be…

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Added by Chuck aa0hw on April 19, 2017 at 2:09pm — No Comments

QRQ CW test sending 80 wpm over the internet using a free open source VOIP app called GLAZE

GLAZE is a very simple p2p audio app for WINDOWS, MAC and LINUX that lets you easily create a voice chat room, call it whatever you like and you can have your fellow Morse Code OPS join you on GLAZE with just the name of the room. - no subscription required....no logins...no passwords...just the name of the room, and then type in any user name you…

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Added by Chuck aa0hw on March 7, 2017 at 3:00pm — No Comments

Morse code online CW NET - experimental multi CW OP conference setup using MUMBLE

this video demo's 3 cw ops transmitting over MUMBLE, in the same channel, on iCW at the same time and yet on the receive side, each op's individual audio stream is able to be controlled using this experimental setup using all free software.

EXPERIMENTAL TEST SETUP

3 different cw ops are sending at different speeds and different pitches…

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Added by Chuck aa0hw on February 26, 2017 at 6:33pm — No Comments

QRQ CW - G729 vs iLBC(audio over ip codecs) - low bitrate performance test for morse code

2 low bitrate codecs are compared for how well they sound transmitting CW AUDIO TONES over the internet(FLdigi)...and then how well they do when their original low bitrate cw audio is regenerated using all free software vst plugins

here is a snapshot comparing the original waveforms of the 2 low bitrate codecs:…

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Added by Chuck aa0hw on February 25, 2017 at 9:08am — No Comments

QRQ CW - MORSE CODE Regeneration software - Live Demo

This video demonstrates an A/B comparison of transmitting morse code audio tones over the internet using a NINJAM SERVER, where the CW audio quality is usually poor, with lots of pops and clicks...however, if you use the original audio from the output of the NINJAM CLIENT, and divert it first to a software APPLICATION in order to regenerate the…

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Added by Chuck aa0hw on February 24, 2017 at 4:22pm — 5 Comments

QRQ CW TRAINING - with a variable speed Morse Code midi file player setup

This video demo's how to create a TEXT TO MORSE CODE MIDI FILE - to use for training in QRQ CW COPY. REAPER is the main APP for playing the morse code midi file. This method allows you to choose the CW PITCH, the VOLUME, the SPEED, THE RISE and FALL TIMES of the CW EDGES.. Some more advantages of using a MIDI FILE instead of an audio file for…

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Added by Chuck aa0hw on February 7, 2017 at 1:20pm — No Comments

K7FJ - CW Morse Code KEYBOARD APP - CWMaestro - live demo

CWMaestro - A morse code cw sending keyboard program written for the DOS operating system decades ago...still working by using the DOSBOX program which has versions for windows, linux and mac. This keyboard software also has a logging program and adjustable cw timing settings, hot key creator, custom messages...etc...

CWMaestro is a…

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Added by Chuck aa0hw on February 6, 2017 at 3:00pm — 1 Comment

Remote Control of an Elecraft K3S for CW mode - using a Raspberry Pi

40 METER LIVE CW QSO with W2XB using this remote setup:

the remote site where the remote op is located, is a WINDOWS 10 computer, over the internet, connecting to the K3S Elecraft's Raspberry Pi hardware/software interface via Tight VNC viewer and JackTrip(audio). The audio from and to the K3S, is achieved in low latency using JACKTRIP(has…

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Added by Chuck aa0hw on January 23, 2017 at 4:30pm — No Comments

Raspberry Pi(or LINUX) - A complete morse code cw station - using free software

- IAMBIC and STRAIGHT KEY from:https://github.com/recri/keyer

- cw keyboard is from FLdigi : http://www.w1hkj.com/

once built and compiled, the Recri Keyer software will allow both STRAIGHT KEY and IAMBIC KEYER at the same time via a USB MIDI DEVICE(s)…

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Added by Chuck aa0hw on January 16, 2017 at 11:00am — No Comments

Raspberry Pi experimental setup to control an Elecraft K3s remotely(LAN or WAN) - live demo

Using a Raspberry Pi hardware/software interface connected to an Elecraft K3S rig, this video live demo's how it works to use the RazPi remote config to connect to the K3S over a remote ip location from another computer in real time... and receive and transmit cw and ssb.(i was able to qso cw with W8ACM for this demo)

Basic Setup…

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Added by Chuck aa0hw on January 4, 2017 at 2:34pm — No Comments

Setup a MORSE CODE LAN PARTY for your cw trainees - using QmidiNET, Linux Native Reaper & a Raspberry Pi

An experimental setup simulation for a RASPBERRY Pi LAN PARTY using 6 Raspberry Pi cw ops - all connected to the Ethernet switch/router local area network...sending and receiving morse code MIDI DATA to each other, using QmidiNet with LINUX NATIVE REAPER providing all the morse code software to convert cw audio to midi messages for transmit, and…

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Added by Chuck aa0hw on January 3, 2017 at 2:51pm — No Comments

Key a Raspberry Pi - sine wave code practice oscillator - with your CW KEYER - just like a RIG

The Raspberry Pi is first setup as a code practice oscillator using LINUX NATIVE REAPER and its own plugins. Then using a circuit similar to this: http://i.imgur.com/C2qYIPm.png , a 555 timer chip is keyed by a FET optoisolator that connects to a CW KEYER's key-RIG OUTPUT jack. In this video a…

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Added by Chuck aa0hw on January 2, 2017 at 10:12am — 1 Comment

Unique iambic morse code keyer using the Jack Audio Connection Kit - software designed by AD5DZ

From: https://github.com/recri/keyer and https://github.com/recri

a free open source LINUX iambic morse code keyer designed by AD5DZ.

CONCEPT: activate 2 different MIDI NOTE MESSAGES by an external MIDI DEVICE connected…

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Added by Chuck aa0hw on December 27, 2016 at 3:10pm — 1 Comment

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