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-3 votes
1 answer
98 views

Do highly sensitive radio receivers experience less fading

I need to know whether radio receivers that are highly sensitive, like having sensitivity less than 0.0224 micro volts for AM reception, experience less fading than less sensitive radios. Which ...
Prabhat Karpe's user avatar
3 votes
1 answer
325 views

Why is QRN so bad on the low HF and MF bands?

If one tunes an HF/MF radio at night, the lower the frequency (or the longer the wavelength) of the band, the more QRN (static and atmospheric noise) there is. 80m is noisier than 40m, and 160m is ...
rclocher3's user avatar
  • 9,320
4 votes
3 answers
2k views

What are the technical reasons that there are no FM transmissions on the long, medium, or shortwave?

Why are there no frequency modulated broadcasts on the long/medium/short wave, but only on VHF? I'm sure there are many historical and political reasons (long/medium/short wave were already in use for ...
JanKanis's user avatar
  • 405