RF Sampler
A DIY RF sampler with -50db sampling out, most beneficial for measuring the output of HF radio PA section using Spectrum Analyzer. Also can be used for Pure Signal transmission.
A DIY RF sampler with -50db sampling out, most beneficial for measuring the output of HF radio PA section using Spectrum Analyzer. Also can be used for Pure Signal transmission.
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…
As many wish to make the cheap PA-70, PA-100 type Chinese SSPA using IRF530 based MOSFET. I always advise them to never operate a SSPA without final LPF. We do…
When S21DW heard that I am planning to make an 3 elements short beam for 10m to replace my 2 elements 10m antenna he immediately jumped to make it asap.…
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…
Update Log:3 Feb 2024: HMI/TFT for NX4832F035 3.5 Discovery uploaded for Laurent/F5OTZ8 Jan 2024: HMI/TFT for NX8048P050 uploaded on request of Ken/VK6AKT8 Jan 2024: HMI/TFT for NX8048P070 uploaded on request…
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…