K9AY Receive loop antenna
In 2022 I made one 200m long beverage antenna for our IOTA (S21DX, 2022) which was around 2m high from ground. For some reason (most probably very high conductive wet…
S21RC Digital Interface Rev 3.0 (Ham Radio – Computer)
Fully isolated interface between Radio and Computer for various digital mode.Radio Side connection:Gnd (isolated from Computer ground)Audio IN/OUT (Isolated by audio transformer)CAT RX-TX and/or CIV: (Isolated optically)PTT and COS (Isolated…
S21RC Digital Interface Rev 2.0 (Ham Radio – Computer)
Too many of us just connect the audio from the computer to the radio without realizing why the audio has distortion or why the computer is acting. So if you…