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Old 10th Jul 2020, 7:13 pm   #50
Jon_G4MDC
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Join Date: Nov 2015
Location: Welwyn Garden City, Hertfordshire, UK.
Posts: 1,035
Default Re: FM signal boosting

I spent time this week in the middle of Dorset. In some idle hours I was doing some SDR experiments with GNU radio and Band 2 FM was the most convenient source of signals - with a helical whip indoors at ground level I didn't expect much.

All I could find were the BBC national stations. Hardly surprising except the frequencies matched the Wenvoe transmitter. Well that just couldn't be - there is steep rising ground in every direction except a gap to the South. The frequency groups of main stations do tend to be re-used on relays but none of the local Dorset ones matched.

The only station I could find that has the correct frequency group is Ivybridge but that is just outside Plymouth. It's a very long path 100km + to the SW but quite a bit is over the sea.

No sign at all of the intended relay for the area which is about 10km South through the gap in the hills. Strange stuff RF.

Last edited by Jon_G4MDC; 10th Jul 2020 at 7:22 pm.
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