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Right, it is AFSK. The FM transmitter is something off the shelf, for car radios and such, meaning it has a low pass filter installed, along with spitting out a
by rubatuga 6y ago
Right, it is AFSK. The FM transmitter is something off the shelf, for car radios and such, meaning it has a low pass filter installed, along with spitting out a 19khz stereo carrier.
- ac29 6y agoThats pretty cool, I'll have to check out your video when you put it up. I'm under the impression that at least in the US, the legal limits mean this really wouldn't be useful past 100 feet or so, line of sight. That's assuming little to no co-channel interference and not using impractically large directional antennas on the receive side. Of course if you were able to frequency shift the transmitter up into the 2m band and had an amateur license, you could trivially go miles (and slightly less trivially 10s of miles).