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Biggles · 13th Feb 2018, 3:05 pm

I have used loop antennas for MW sets that I have built over the years. They are loosely based on designs found in your typical battery valve portable set. They are quite small, usually about 12" square and actually replace the first tuning coil in the radio. They work quite well, and are directional which is handy for nulling out interference. I just wind them to give the correct inductance to resonate with the tuning capacitor, and use enamelled wire. The only problem is that you can't vary the inductance easily to adjust the tracking. With a bit of experimentation and removing turns you can get it near enough.
Alan.

13th Feb 2018, 3:05 pm	#15
Biggles Rest in Peace Join Date: Feb 2004 Location: Hexham, Northumberland, UK. Posts: 2,234	Re: My first frame aerial I have used loop antennas for MW sets that I have built over the years. They are loosely based on designs found in your typical battery valve portable set. They are quite small, usually about 12" square and actually replace the first tuning coil in the radio. They work quite well, and are directional which is handy for nulling out interference. I just wind them to give the correct inductance to resonate with the tuning capacitor, and use enamelled wire. The only problem is that you can't vary the inductance easily to adjust the tracking. With a bit of experimentation and removing turns you can get it near enough. Alan.