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| WSPR results today with 2.5W to 80cm loop in the bedroom on 15m |
Well never mind the theory - my loop WORKS well. On 15m, with the loop taped to the chair in the bedroom shack, I have already been spotted on WSPR in Japan when using just 2.5W from the FT817 at 9474km. So, my first attempt with an indoor HF magnetic loop in the bedroom has left me very impressed.
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| Loop antenna in the bedroom (notice the grandchildren's toys!) |
Current set-up is about 80cm diameter 6mm copper pipe inductor tuned with a small 365pF air spaced variable cap. Matched with a coupling loop 1/5 the size of the main loop made with RG58 coax. With the 365pF variable it tunes from 40m-10m, but the variable cap needs padding out as tuning is extremely sharp.
I should have tried magnetic HF loops long ago.
UPDATE 1600: Just QSYed to 14MHz with the loop in the bedroom and power reduced to 500mW and still getting plenty of WSPR reports out to 2600km or so so far.
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