rtl-sdr

I'm brand new to radio, software defined or otherwise, so forgive me if this is a particularly stupid question. While listening with my RTL-SDR dongles, one E4000-based and the other an R820T, I can hear broadcast FM on 31.1. The station I hear on that frequency is 106.7, and both dongles pick...

So, I'm trying to calibrate my NooElec RTL-SDR RTL2832U & R820T for SDSharp, using the stock antenna, which actually gets pretty darned good reception. Problem is, upon calibrating my signal, so it sits center of the peak, I get this high pitch noise. If I readjust the signal so it sits a bit...

Hi folks. Just ordered an RTLSDR with the R820T tuner. Although I'd like to have some general fun with it (can be used for TRBO with DMRDecode can't it?) the main reason I got it is to create a feed for Plane Plotter. Got lots of questions, so open to suggestions from anyone who has done this...

I just put together a somewhat comprehensive howto on creating a Police/Fire/Medical radio scanner on instructables.com. It uses a single receiver and works pretty well for the price. Hope it can help anybody interested in putting one of these together! How to Make a $19 Police Radio Scanner