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> It's very hard and expensive to transmit signal on a single frequency. And very easy to pollute everything. FM transmitters for MP3 players are cheap and wor
by corin_ 13y ago
> It's very hard and expensive to transmit signal on a single frequency. And very easy to pollute everything.
FM transmitters for MP3 players are cheap and work well (within a very short range, but that's their use-case), see for example http://www.amazon.com/FM-Transmitters-MP3-Player-Accessories/b?ie=UTF8&node=13981621 http://www.amazon.com/FM-Transmitters-MP3-Player-Accessories...
So surely it can't be that hard or expensive - unless it changes when you try to broadcast to more than a few feet away?
- sliverstorm 13y agoIf you can only broadcast two feet, who will care that you are flooding the spectrum? So I don't think you can assume they are particularly clean transmissions.
- mark-r 13y agoIf they meet FCC regulations then yes you can assume that. If they don't meet FCC regulations then they're illegal. I don't know how much policing goes on for that though.
- sliverstorm 13y agoI thought FCC regs involved a distance component? Like, they don't measure EMI right on the surface of the device.