Hey mate this looks really great!
I've dreamed about building something similar for an RTLSDR, but much fancier (ping-pong on 'interesting' chirps, yo-yo sweeps to find voice/burst comms, trended plots etc etc). A poor man's wideband spectrum analyser. But I can't code to save my life..
However, wait long enough and funny things happen :) You've made a great start with this project, especially given there was NOTHING out there prior (that I've seen anyhow. Certainly for Win32.)
All the module/package dependencies are a bit of a pain but hey, you've got a working app :)
Love to try it soon when I get a chance, hope you develop it up into a full-bllown RTLSDR spectrum analyser / "interesting signal" finder!

Cheers
ben

> Message: 1
> Date: Mon, 21 Jan 2013 16:53:01 +0000
> From: Al <al@eartoearoak.com>
> To: osmocom-sdr@lists.osmocom.org
> Subject: RTL-SDR Scanner/Plotter
> Message-ID: <50FD726D.5010000@eartoearoak.com>
> Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
> Hi,
>
> I thought you may be interested in a program I've written, it's a Python
> GUI which scans a set of frequencies and plots the resulting levels,
> which can be saved for later viewing or exported to a CSV file.
>
> Source: https://github.com/EarToEarOak/RTLSDR-Scanner
> More info: http://www.eartoearoak.com/software/rtlsdr-scanner
>
> I wrote it to help me find signals over a wide bandwidth, to get a
> better view of the RF space. I hope you find it useful.
>
> Al
>