I'd like to try to build something, but haven't had much luck searching.
I've tried a couple ready made products that weren't overly impressive.
Furry logic (or funny)................ I would assume I would need to convert audio to digital, transmit digitally, then convert back to analog to avoid interference, so I wouldn't be transmitting music............
I recently bought a pair of Miccus RTX units (so one set to 'transmit' mode ... the other to 'receive' mode). They work fantastically well Bluetoothing the output of a DVD player up one story of my house to where my preamp sits, so I can select that source and then drive (hard-wired) speakers which are next to the TV.
These units actually look promising, if they are actually able to work reliably at the advertised range in a noisy environment. Other normal Bluetooth devices get about 2/3 advertised range in the room. I've never experimented with extended range Bluetooth. I think I'll try these before building anything. Thanks.
You will be transmitting music. You may be violating the conditions under which those RF modules can be used licence-free - they are intended for data signalling.
For (almost) legal transmission of music within a building you need to use the technology intended for wireless microphones etc. This may be expensive, but the quality should be good. In Europe Sennheiser seem to be the market leader; maybe Shure in North America? Sennheiser bodypack transmitters have a line input, although they are more commonly used with microphones.
more furry logic.
The data is copyrighted.
You need a licence to use that copyrighted material.
And you don't even want to recognise the rights of the musicians !
It's the same logic used by the fakers of electronic components and shoes and perfumes.
It's criminal behaviour.
No. The signal would be music which has been digitally encoded. That type of signal would not normally be permitted in a frequency band intended for telemetry, industrial plant alarm signalling etc. However, provided you don't draw attention to yourself you will probably get away with it.jwilhelm said:The actual signal would be data.