All Blog Posts Tagged 'FLdigi' (9)

how to STOP your HAM RADIO RIG from sending CW NOTE edge noise harmonic spurs during TRANSMIT

the typical modern RIG, usually shapes its CW TRANSMIT waveform as a raised cosine edged cw note with a Rise and Fall time between 5 and 10 milliseconds....For this test a 7ms rise and fall time of a perfect raised cosine cw note created by FLdigi is used to represent the "modern rigs" and tested against another software CW KEYER called the ZamGate…

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Added by Chuck aa0hw on March 2, 2018 at 12:22pm — No Comments

VB-AUDIO's Spectralissime Spectrum Analyzer on Linux - demo using FLdigi's CW wave shaping controls

VB-AUDIO's Spectralissime is working perfectly on LINUX LUBUNTU 16.04 using W.I.N.E and the WINEasio driver for JackRouter.  This is a windows program and this demo would also apply to a windows install of this excellent software audio spectrum analyzer.  This video below,  is a brief demo showing the spectrum readout of FLdigi sending cw at 40 wpm and varying the rise/fall time and toggling on & off - FLdigi's own unique and powerful CW bandpass filter…

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Added by Chuck aa0hw on February 3, 2018 at 11:09am — 2 Comments

Build a Morse Code CW SINE WAVE OSCILLATOR that sounds as good as FLdigi using FREE software

This is a QRQ CW COPY TEST - to see how close I could match the great sound of FLdigi's QRQ CW with a custom cw sine wave oscillator - built up by using AMsynth and the GLAME BANDPASS FILTER...NOTE: since you can not externally KEY FLdigi... i had to search for another way to be able to key CW manually/externally - from PADDLES, KEYBOARD or…

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Added by Chuck aa0hw on December 2, 2017 at 4:44pm — No Comments

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

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) that…

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

FLdigi CW KEYBOARD now has its own bandpass filter to help clean up the edge noise generated by QRQ CW sending.

The latest version of FLdigi, 3.22.10, now has its own, cw audio bandpass filter,

to help filter out any qrq cw edge noises made in TRANSMIT MODE.…

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Added by Chuck aa0hw on December 26, 2014 at 5:30pm — 2 Comments

SOFTWARE CW KEYBOARDs - review of 5 morse code programs

This video demonstrates 5 different cw keyboard programs - just an overview of each one.( there are other videos that will go over the details of each one) These 5 cw keyboard programs were selected because they have adjustable cw timing parameters for weight, dot/dash ratio, rise/fall time, compensation etc...

FOR FURTHER INFORMATION ON THESE KEYERs SEE:

1.…

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Added by Chuck aa0hw on August 12, 2014 at 2:56pm — No Comments

FLdigi: interview with its creator, DAVE FREESE, W1HKJ

The creator of FLdigi, Dave Freese, w1hkj,

was recently interviewed on the LINUX IN THE HAM SHACK podcast.…



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Added by Chuck aa0hw on February 25, 2011 at 9:00am — No Comments

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