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Old 14th Jan 2023, 1:25 pm   #156
Bazz4CQJ
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Join Date: Apr 2009
Location: Oxfordshire, UK.
Posts: 4,924
Default Re: Questions on 160/80 metre AM transmitters.

The whole subject of loop antennas can get one going around.... in loops!
The magloops are active receiving antennas with a small amplifier built on to them. In reading around about magloops, I have become aware that there is a great deal of current interest in using loop antennas for transmission.

I think the current interest is partly a result of many countries becoming more more restrictive about having very conspicuous ham radio aerials in residential areas. The transmitting loops need tuning capacitors to make them work, and even at modest power levels, the voltage across those caps is appreciable, and this has spawned a secondary hobby; build your own wide-spaced tuning caps.

Judging from what comes up on Google and YouTube, people seem to be having a lot of fun with transmitting loops, but it's not an subject I've looked deeply.

B
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