I was thinking about all the different modulation methods and something came to my head. After seeing up converters that convert HF to VHF for SDR (software defined radio) dongles to be able to listen, I thought, "why not use up converted audio?"
- With appropriate filters to take out the highs and lows, it would only take up 4000 hertz max according to the telephone standards. That's less than AM!
- Simple receive, just down convert until its at the AF band.
- Better chance Aliens will be able to figure it out because it is just up-converted RAW audio. (Kinda joking with that one)
- And if nothing else, for example: bad spectrum efficiency, hard to pick up with any noise, etc., I certainly want to try it just for fun!
So would it work out at all, and if so how well?