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…Continue
Added by Chuck aa0hw on March 2, 2018 at 12:22pm — No Comments
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…Continue
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…Continue
Added by Chuck aa0hw on December 2, 2017 at 4:44pm — No Comments
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…Continue
Added by Chuck aa0hw on November 2, 2017 at 9:38am — No Comments
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)…Continue
Added by Chuck aa0hw on January 16, 2017 at 11:00am — No Comments
Added by Chuck aa0hw on May 27, 2016 at 2:30pm — No Comments
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.…Continue
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:
Added by Chuck aa0hw on August 12, 2014 at 2:56pm — No Comments
The creator of FLdigi, Dave Freese, w1hkj,
was recently interviewed on the LINUX IN THE HAM SHACK podcast.…
Added by Chuck aa0hw on February 25, 2011 at 9:00am — No Comments