Amazon has a lot of these kinds of dongles. This one was the cheapest at the time I added it to this page. This dongle provides a tuning range of approximately 25 MHz – 1.7 GHz. There are now many products that will also cover HF (1-30 MHz) for a little bit more. I’ll try to include some of them on this page later.
Stuff Recommended by Readers
About the Ham It Up v1.2 – NooElec RF Upconverter, Tom, AJ4UQ says, “This is the SDR combo that gives you HF through UHF. Good for monitoring or checking new bands. Don’t forget the various antenna adaptors and connector cables.” This converter works With Most SDR dongles, including Funcube, RTLSDR (RTL2832U with E4000, FC0013 or R820T Tuners), and MF/HF Converter With SMA jacks.
I use both the dongle and upconverter, hooked up to a Nexus 7 Android tablet. Makes for a very inexpensive second receiver.