Page 1 of 1
#1 Raspberry Pi FM CD-quality stereo xmtr with no extra hardware
Posted: Wed Sep 06, 2017 12:48 pm
by jack
Here's an insanely left-field project - turns a RPi into a CD-quality powerful FM stereo transmitter
without using any extra hardware by hacking the spread-spectrum functionality of the board with a kernel driver, plus one GPIO pin
:
http://www.icrobotics.co.uk/wiki/index. ... ransmitter
#2 Re: Raspberry Pi FM CD-quality stereo xmtr with no extra hardware
Posted: Wed Sep 06, 2017 1:14 pm
by simon
Quite extraordinary really
#3 Re: Raspberry Pi FM CD-quality stereo xmtr with no extra hardware
Posted: Wed Sep 06, 2017 2:02 pm
by ed
I wonder if this exceeds the 50 nanowatt legal limit for the 88-108mhz band?
interestingly I've been installing a couple of remote weather stations using AVRs and broadcasting/recieving on 433mhz before uploading to the web. It's absolutely amazing how busy/polluted the 433mhz band is. Takes a lot of filtering and checksumming to avoid interference......we're doomed I tell you, doomed!
#4 Re: Raspberry Pi FM CD-quality stereo xmtr with no extra hardware
Posted: Thu Sep 07, 2017 8:50 am
by jack
ed wrote: ↑Wed Sep 06, 2017 2:02 pm
I wonder if this exceeds the 50 nanowatt legal limit for the 88-108mhz band?
I presume that was a rhetorical question?