Re: HF Magnetic Loop and Pacemaker
John - KK4ITX
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I use the MFJ-9232 QRP Pocket Loop tuner and find it a useful setup to eliminate the local noise. There are several YouTube videos showing good results but beware...... they were made when there were sun spots. I had great fun rigging up the expansion arrangement to allow for various lengths of wire. To get a broader bandwidth I used trailer hookup wire, seems to work better than the wire that came with it.
The supports are driveway markers and I really lucked out at a Flea Market with the $4.00 heavy duty tri-pod. I have attached a picture of the assembled unit if anyone is interested I have more and some additional hints and details to offer.
As for use with a pacemaker ? You will know if it is bothering you or anyone else I believe. When I tune up I am listening (RX) or using my Sark 100 so there’s no large amount of RF present....... Operating (TX) one would be several feet away so at 5w I doubt that you would be affected but just go at it slow (1-2w) and see what happens.
Visit: www.zaarc.org. 👁
On Jan 29, 2020, at 22:18, Dan Reynolds <on30ng@...> wrote: