Successfully Hunting Down QRM With A New Loop

Having not been on the HF bands for a month or so I was horrified to find a whole load of new QRM across 160m, 80m and 40m. Time to break out my direction finding loop that I'd used successfully before (see video link below). However, I was struggling to make progress and then I remembered a past suggestion for a revised, more sensitive, loop design. See how I get on and what I discover...

My thanks to The Radio Amateur Society of Australia Inc. for the original loop design and additional thanks to Don (WD8DSB) for his suggestion for this revised design (also thanks to the person who suggested a solder-only method of construction for the original loop - unfortunately, I've lost that email).

A link to the start of a series of three QRM hunting videos, including the build of the original loop, complete with sniffer-wand, can be found here: https://youtu.be/R52V7Nf8uBM

This is one of many amateur/ham radio related videos on my channel. Please feel free to browse 👀, like 👍🏻 and subscribe (it's free!), remembering to hit the bell 🔔 so you’re notified of new videos as soon as they're published and you don't miss out.

0:00 QRM Intro
2:38 Power-Off Test
3:23 Loop Designs
5:40 Loop Build
14:12 Initial Tests & Search
17:51 Search Results
19:18 Seeking Help
19:59 QRM Source Found
20:50 QRM Gone

Thanks.

Ian.