Tuesday, May 27, 2025

Sideband receiver project in Silicon Chip magazine

Fantastic to see a serious ham radio construction project in the June edition of Silicon Chip magazine.  The project by Charles Kosina, VK3BAR, is a general coverage sideband shortwave receiver covering 3-30MHz.

The VFO is an Arduino nano and Si5351. IF is at 9Mhz and uses a crystal filter board sourced from AliExpress. Interestingly there is RF preselection using electronically switched capacitors and a varactor diode.

Audio output is an LM386. There's AGC and the radio even has squelch.

What is, perhaps, missing is AM reception. 

It is wonderful to see such a project in Silicon Chip. 

1 comment:

Paul VK3HN said...

I have been meaning to buy this mag. It has been years since I bought an electronics magazine. I think about 3 years ago I bought one (SC?) from a news and book store at a train station for a long train ride. It was full of microcontroller plant moisture meters and other useless stuff LOL!