HFU HF Underground
General Category => General Radio Discussion => Topic started by: RadRoadrunner on March 25, 2017, 1553 UTC
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I had an idea about using a shortwave radio that has 64 MHz -88MHz (Channels 4-6) capabilities and using it to decode HDTV audio from it. This would be similar to older analog radios and how they would be able to pick up the audio carrier of TV stations for use in emergency situations. Any suggestions about how this would be accomplished? My thought is that it would be similar to SSTV and could have a decoder program for PC.
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The problem with all the HDTV systems I know of is that the audio is encapsulated in a transport stream, in the case of 8VSB (US HDTV) running at close to 20 Mbps. You have to receive the entire bitstream, and demux the content you want, and at that point, you might as well watch the video PID too.
The other thing to keep in mind is there are very few lowband VHF TV stations. Most migrated to UHF and a few on highband VHF. Lowband has trouble with impulse noise which can cause breakup/tiling.
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