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ARRL Products: Interference/DF (More) The ARRL RFI Book -- Now Shipping! -- Second Edition. Practical Cures for Radio Frequency Interference. Amateur Radio Astronomy -- Explore the contributions of radio amateurs, and how to make and set up equipment to study the signals coming from space. The RSGB Guide to EMC -- Tackle RF interference problems and understand the underlying causes. AC Power Interference Handbook -- New insights into the causes, effects, locating and correction of power-line and electrical interference. 3rd Edition. Transmitter Hunting -- Radio Direction Finding Simplified

Get official ARRL sanction for your event and receive special benefits such as free prizes, handouts, and other support.

It's easy to get your hamfest or convention sanctioned! Simply have it approved by your Division Director. The hamfest or convention application may be filled out on-line. You can also use the hamfest or convention application form, available as an Adobe portable document format file (hamfest.pdf). (You'll need Adobe's free Acrobat Reader software.) Or you can contact ARRL Headquarters by email (hamfests@arrl.org) or telephone (+1-860-594-0262) for more information.

The ARRL Convention and Hamfest Planner booklet (79,112 bytes, PDF file) is available to help you plan your event.