Johnson's Techworld

UVSQ-SAT Activation for Amateur Radio UVSQ-SAT is a CubeSat which was launched on 24th January 2021. According to a Twitter post, the FM transponder will be activated for

Peeping Inside My TM 261 VHF Base Station! My quarter century old TM 261 VHF base station was resting in the attic for a decade, when I took

Can you play chess with a satellite? You would certainly have heard of computers playing chess with humans and I have told you about a satellite which grows

Homebrewing UHF Yagi Part 3: Tuning and Testing I had already finished fixing the elements on the boom, connecting the antenna cable and what remained was tuning and

Homebrewing UHF Yagi Part 2 Bought the additional items from the hardward ware shop yesterday and started working on the UHF Yagi early in the morning as today

Homebrewing UHF Yagi I had built a seven element VHF Yagi some time back. Now I am planning to build a UHF Yagi. I got a design by

Diwata 2 (PO-101, Philippines-OSCAR 101) Diwata 2 was developed by the University of the Philippines Dillman and Advanced Science and Technology Institute of the Department of Science and

Building a Turnstile Antenna for UHF I have been told by my VU friends that they can hear my signals on the satellite transponders, but I am not

Saudisat 1C or SO-50, Saudi-OSCAR 50 Saudisat 1C or SO-50, Saudi-OSCAR 50 is an FM satellite available for Amateur Radio operators. It has also experiments other than the

TEVEL Series of Amateur Radio Satellites I had the opportunity to work through the amateur radio transponder of TEVEL 7 a couple of times in the last few