SDR: there's an app for that
tfox at knology.net
Fri Jun 11 15:19:23 CDT 2010
I saw that there is now an SDR app for the iPhone and iPad, by NZ0I, in
iTunes. It takes I and Q, and demodulates the signals for SSB at
least. It apparently samples the I/Q audio at 44.1kHz. It also has a
mono-mode, where it can use the mic jack on top of the iPhone, but does
not demod as much spectrum.
I purchased a Belkin TuneTalk on ebay for about $20, that provides the
stereo line-in to the iPhone via the docking connector, which I just got
today. I plugged them together (which turns off the iPhone's cell phone
part), and hooked them up to my SoftRock RxTx that stays on the
workbench. It has SI570 frequency control, so I can tune all over 40M.
Mister signal generator verifies a 44kHz spectrum display.
It works really cool!
It demods decently. Occasional overload, so the level may need
tweeking. I must run the TuneTalk in Mic mode to get enough level for
the app to demod properly.
Anyway, a really useful app for the iPhone or iPad.
More information about the Tacos