Digital

Download automatic packet reporting system (APRS) software.

Blog by Sunil Thomas Thonikuzhiyil of Kanjirampara. Trinvandrum, India features homebrew tuner, SDR

Resource for PSK31 setup and operation. Email discussion list.

Gives history, use and some technical information.

Information on modern modes of HF digital ham radio, band propagation, antenna page and files for do

Monthly magazine of the ARRL with articles on technical advances, news, construction projects, conte

Japanese amateur shares his equipment list and station information, and photos. [English and Japanes

Japanese operator presents station information, photos and links. Includes a page on low pass filter

ARRL: PSK31 Spec - Provides information on PSK31 including varicode characters, convolutional code a

Information about a specialist range of standalone, DOS and Windows HF and VHF radio digital signals