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Call Sign Prefix Allocations - Table of allocation of international Call Sign series

Siskiyou County Amateur Radio Association - SCARA is located in Siskiyou County, CA. Features information on club events, meetings, and membership.

Tampa Amateur Radio Club - Since 1922 Tampa's largest Ham organization. Dedicated to hams by hams. Classes in theory, code, and experimentation are a regular event.

IK5BCU Marco - Dedicated to:jnos tcp-ip packet radio

Denver Amateur Radio Supply - A full service dealer of new and used equipment located in Stevens, PA Lancaster County.

Alpha Delta - Alpha Delta quality accessories for commercial and amateur radio communications

Wellbrook Communications - Broadband active loop antennas for radio amateurs and hobbyists

Hal Communications - HF radio data communications products, analog and DSP modems

Broadcast microwave services - Designs and manufactures a comprehensive line of microwave communications equipment for television broadcast, video, telemetry, and electronic surveillance applications.

Society of Amateur Radio Astronomers - SARA is a dedicated group of people that formed an international society to learn, trade technical information and do their own observations of the radio sky

National Weather Service Marine Forecasts - Amateur radio, commonly referred to as "Ham" radio, is popular among the yachting and small boat community as a means of providing communications and receiving weather information.

The Morse Telegraph Club - International non-profit organization dedicated to the perpetuation of the knowledge and traditions of telegraphy and American Morse Code.

ARRL web: EME and Weak Signals - Moon bounce EME, meteor scatter and weak signal operations, introduction by ARRL.

QEX - "QEX is the ARRL ""Forum for communications experimenters."" Published bimonthly, features technical articles, columns, and other items"

Radio Today - UK-based hobby radio magazine originally published only on paper. Now, every article is also published on the web.

Australian Radio Frequency Allocations  ^pop - Large aurtralian radio frequency charts collection

I.L. Elettronica srl - Import-export telecommunication equipment Cushcraft Antenna Italian dealer, Kenwood Yaesu Icom Dealer

Ham Radio Outlet  ^pop - A full line dealer with 12 locations nationwide.

PolarPlot - Freeware antenna software that lets you see what the polar diagram of your rotatable beam actually looks like where it is operating. With PolarPlot you can measure the polar diagram of the antenna and check for abnormalities - compare plots taken before and after changes to the design or location - check the -3dB beamwidth - look at the front to back ratio - see the size and position of the sidelobes.

Freeware for Amateur Radio Priority listing - Programs for hams written by Alex Shovkoplyas

Spectran - Program designed to do spectral analysis and real-time audio filtering on reception of audio signals for EME, VLF, SETI applications. Offer support for MTHELL, QRSS, DFCW, NDB, WSJT by I2PHD

MixW V3  ^{updated  pop} Priority listing - PSK31, RTTY, SSTV, MFSK, MT63 Olivia Hellschreiber SSTV and other modes, Log, DXCluster, telnet access, log backup, Rotor, CAT and whatever you dream in a single program

Visual Moon Tracking - Java moon tracking software runs on LINUX, Win 98, Win NT, UNIX, OSF, MacOSX

FTBasic  ^pop - FTBasic is a CAT control program for Yaesu radios FT100, FT817, FT847, FT1000MP Mark V and FRG100

Pathfinder - A free application that searches more than 100 web-accessible sources to locate QSL information for a callsign that you enter once