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ARRL Products: Interference/DF (More) Transmitter Hunting -- Radio Direction Finding Simplified The ARRL RFI Book -- Second Edition. Practical Cures for Radio Frequency Interference. AC Power Interference Handbook -- New insights into the causes, effects, locating and correction of power-line and electrical interference. 3rd Edition. The RSGB Guide to EMC -- Tackle RF interference problems and understand the underlying causes. Electromagnetic Compatibility Engineering -- Now Shipping! -- The most comprehensive book on electromagnetic compatibility, including all the latest advances and developments in the field.

If you're having problems installing, running or using any ARRL software, feel free to contact us for assistance. Please check the product notes and installation notes for help first.

You can reach us by e-mail (epubs@arrl.org), phone (860-594-0214) or U.S. mail (ARRL, Attn: EPB, 225 Main Street, Newington, CT 06111-1494).

When requesting help, please include (or have handy, if you're phoning) the product name and exact wording of the error message and/or a thorough description of the problem. Information about your computer, including processor type (AMD 486 DX/2 66MHz, Intel Pentium 133MHz), amount of RAM installed, model and maker of your video card (ATI Expert@Work, Matrox Millenium), current video resolution (640 x 480 w/256 colors, 1024 x 768 w/24-bit color) and the operating system you're running (Windows 3.1, Windows 95) is also required.