Did a lot of work the other night at the 23cm trx. Build in the speaker (drilled a lot of holes!) and did the last mod to do more filtering in the VCO voltage. Also fixed the phantom power for the electret microphone. Modulation and LF-sound are now in an acceptable range. There is always…
Category: Home brew
K3NG’s Arduino CW Keyer 2nd attempt
After a second test resulting in a working display yesterday evening, my 2nd attempt to get a breadboard version of K3NG’s Arduino CW keyer up and running turns out to be a success! This morning I soldered a female mini-jack and a speaker to the Arduino Nano and set the right pins in the Arduino…
Arduino keyer 1st attempt
Last night at the radio-club I did some puzzling for my 1st attempt to build the K3NG’s Arduino CW Keyer. I want to build one especially to train Morse code keying. Therefor I need a display attached to the keyer and some training software. I have a Hoxo 1621 4-bit 16×2 display laying around so…