I purchased the PA 100W kit on Aliexpress for my QRP X1M transceiver. This is exactly…
Balcony antenna for 80-20m by UR5WCA
I made this antenna due to limited area condition in my flat. I wasn’t expect too…
WebSDR 80m band
WEB SDR 80m The idea of design and implement the WebSDR in my hometown has appeared…
Active loop 1-30 Mhz antenna
This is active loop antenna dedicated for 1-30 Mhz. It can be substitute for MiniWhip antenna…
Magnetic Loop 80-10m
Controller is based on Arduino-mini and the multi-turn (1k, 10 rounds) potentiometer connected to it. There…
CCTV splitter
Intention for build an video splitter was followed by personal needs of switching between 4 CCTV…
Yaesu 757 GX2 external display
I have started this project in 2015. Finally, after some modifications, I decided to publish it.…
SP3NYR ANTENNA ANALYZER
This project has been started due to got a gift from Kamil SP5KBS (thx for that)…
QRP ANTENNA TUNER
This is my second own-built antenna tuner. The first one was the well known DF3OS QRP…