Learn Tech stuff

The Saturday morning group practical sessions at Paul M0PLA’s factory unit ABC Security continue. Recently John M0XJA led building, the Youtube ‘Soldersmoke’ channel inspired direct conversion receiver. This is being built as modules over the coming weeks. The aim is to learn construction skills, electronics
testing and calibration of the radio receiver.

Following a test Martin and John experimented on another project the GM3SEK filter box looking for possible heat sources when the filter used.
This project is connected to the mains supply to the shack and then on to feed all ains radios, psus or other tech.

Very much a fit and forget project.

These are part of the toolset to reduce noise in your shack. Filters on aerials are good but if noise is coming in via the mains you need to filter it out. Around 8 to 10 member took part and are continuing to learn more and more practical.

In discussion a point was brought up was heat generated by currents flowing through the windings on the chokes so John brought along his heat based camera to see where heat was generated while the filter is in-line power.

Advice was taken from Ian GM3SEK who is the source of this project and a lot of knowledge about reducing QRM in the shack.