We should have an SDR forum. I guess "homebrew" works, but it really is a different category. Radioreference and eHam do, for what that's worth. With the $20 SDR now as common as it is, really a booming sub-culture of amateur radio, I'm surprised it's not covered much here. It's amazing that for less than cost of lunch, you can have 90% of what a $3000 radio does in the size of a thumb-drive. All mode, from 24mhz to 1.7ghz. Add the up-converter for HF (less than $50). If you've been under a rock for the past 3 years or so, start here: http://www.rtl-sdr.com I recommend you get your dongle and up-converter here: http://www.nooelec.com One of many free apps, here's what the latest release of SDR# looks like. (click to enlarge) Granted, no transmit with these, but most of what I do is outside ham bands anyway. Just the fact that I can see 3+ MEGS of waterfall blows me away. We only get about 4K in DM780, so it looks like a tiny sliver on the new waterfall. I'd have to spend big $$$ (like a Flex 6k) to get that in a rig and even then my choices would be limited. SDRConsole gives you six slices across whatever sample rate you use. Trunking, digital voice (P25, D-Star, etc.), satellite tracking, all kinds of great plug-ins and apps available. Many thanks to those smarter than I am who've provided such great works for us to use! So much to do, I haven't missed my Flex3k at all. If you're a fan of digital-modes, be sure to check out the couple dozen or so videos I've posted since buying this little gem. Even if you're not a digi-mode fan, you might still be interested in what a cheap "scanner" can do. http://www.youtube.com/user/k2nccvids/videos Not sure "Discussion" is the best place for this post, but if I had an SDR forum, I wouldn't be as confused.