Technical Reference/Software Defined Radio
A blod dedicated to SDR and RTL-SDR featuring sdr new and product reviews

Technical Reference/Software Defined Radio/RTLSDR
Upconverter MF/HF Converter for Receivers. Converts signals in the MF and HF Bands to signals in the VHF Band. Intended for use in receiver applications with projects like RTL-SDR/SDR#/FunCube Dongle, or to listen to AM radio using an FM receiver.

Manufacturers/Software Defined Radio
Maker of bladeRF usb superspeed SDR Software Defined Radio

Technical Reference/Software Defined Radio/RTLSDR
Discussion group about RTLSDR Dongles, software support and hardware mods for these Software Defined Radio systems based on RTL2832U

Technical Reference/Software Defined Radio/RTLSDR
Comparison table of a RTL-SDR and FunCubeDongle

Software/Logging
DX Buddy is a multi purpose ham radio application that let you control your radios, or controller, offer a logbook, cluster access, qrz lookups, and interface with several popular ham radio applications

Manufacturers/Software Defined Radio
Software Defined Radio parts, RTL-SDR DVB-T USB Stick, cables, antennas, upconverters, leds delaer

Ham Radio/Blogs/Special Interest
RTL-SDR is a very cheap software defined radio that uses a DVB-T TV tuner dongle based on the RTL2832U chipset. This is a blog about rtl-sdr, software defined radio and their developments and applications.

Run a Spectrum Analyzer in your PC. Download free programs that can convert your PC into a powerful spectrum analyzer.

Oscilloscope Guide to Links of main manufactures like Agilent HP, BK Precision , Fluke Protek LeCroy and Tektronix

Ham Radio/Clubs/North America/USA/New York
Radio Amateurs of Greater Syracuse is an organization involved in promoting public service, fellowship, and ham radio in general, in the Syracuse, NY area. This site provides information, news and events of interest to hams in Central New York.

Ham Radio/Blogs/Europe/UK
Amateur Radio Station Blog from the Isle of Man (by 2D0YLX) all things radio related with links to many sites on and around te island.

Manufacturers/Microwave
Equipment and Components for the RF and Microwave industry. AtlanTecRF is a global supplier of microwave and RF components and equipment to the aerospace, defence, telecommunications and scientific markets.

Links to RTTY software decoders and encoders. MMTTY, MIXW32 Ham Radio Deluxe and more

Wifi antenna projects. Homemade your wi-fi antenna and 2.4 GHz aerials, extend your coverage.

Internet and Radio/Police Scanners
Listen to Oklahoma city police scanner, oklahoma, moore ok county.

Ham Radio/Clubs/North America/USA/Texas
Austin Hams - Your Ham Class Headquarters for Bell, Hays, Travis, and Williamson Co.

Ham Radio/Clubs/Europe/UK
IOMARS affiliated to the RSGB in April 1948. This is the only OFFICIAL site of the Society. The primary club for Amateurs on the Isle of Man

Operating Modes/Repeaters
Isle of Man Repeaters maintained by David Osborn GD4HOZ this site covers the VHF repeater GB3GD and UHF internet linked 70cm repeater GB3IM. Using Allstar software for linking GB3IM is the only site in the uk to have three transmitters. Supported by the Isle of Man Amateur Radio Society

Antennas/Homebrewing Techniques
Ham radio wire antennas are the most common form of antenna used by ham radio operators. Here you can find hints and tips on diy wire antennas