On 2013-04-29, noah pugsley <noah.pugs...@gmail.com> wrote: > So glad to see this. Receiving broadcast FM isn't even the half of it. > > From rtlsdr.org: > > > - FM: both narrow band and wideband. The former is used on two way radio > systems such as emergency services and private radio networks (like > couriers and taxis) and UHF CB and the latter is the usual broadcast FM the > likes of which you have in the kitchen and car. Aircraft and boats and > ships also use narrow band FM which you can use RTLSDR to listen to. The > SDR# software can receive both narrowband and wideband FM and the latter do > stereo FM too! > - AM: Most AM transmissions are below the bottom frequency of RTLSDR > dongles. You will need a translator (I'll deal with translators soon) to > get these frequency bands. > - Upper/Lower Sideband (USB/LSB). See AM above. > - CW: Continuous wave for morse code enthusiasts. > - With GNURadio you can receive and demodulate digital modes such as > pagers (POCSAG), ADS-B (aircraft positions), AIS (ship positions), AP25 and > TETRA (digital trunk radio) and many others. > - GPS reception is currently being worked on but should be do-able. > - Satellite reception including receiving ham transmissions from the > International Space Station are possible to. I have seen some screen shots > of someone using RTLSDR and a 2.5m dish to track the carrier signal on deep > space robots such as Voyager and the Mars missions. > - This > post<http://cgit.osmocom.org/cgit/rtl-sdr/commit/src?h=steve-m/direct_sampling>alludes > to the tuner chip being disabled and the RTL chip being used to > receive transmissions at 30MHz and below. > > > Of course getting samples is one thing, doing something with them is > another. Anybody working on a gnuradio port? :-( > >
I've made a start at a gnuradio port, as has bentley@, the result of merging them together is in openbsd-wip, but I won't have much time to look at it further for a bit. https://github.com/jasperla/openbsd-wip/tree/master/comms/gnuradio
