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ARRL Products:
Interference/DF
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The RSGB Guide to EMC -- Tackle RF interference problems and understand the underlying causes.

Transmitter Hunting -- Radio Direction Finding Simplified

AC Power Interference Handbook -- New insights into the causes, effects, locating and correction of power-line and electrical interference. 3rd Edition.

Electromagnetic Compatibility Engineering -- Now Shipping! -- The most comprehensive book on electromagnetic compatibility, including all the latest advances and developments in the field.

The ARRL RFI Book -- Second Edition. Practical Cures for Radio Frequency Interference.

September 2007 QST Feedback

The antenna-raising photo on the cover of the August 2007 issue shows N6PEQ, W1HIJ, K7JA, CM2OY, CM2KL and CO2II at COØUS during Field Day 2003. It was taken by Janet Margelli, KL7MF. — tnx K7JA

In “Six Band Loaded Dipole,” by Al Buxton, W8NX [Aug 2007 QST, pp 34-36], the author reports that the gain of the antenna on 40 meters is 1.5 dB relative to half-wave ordinary dipole rather than the 3 dB indicated.


Page last modified: 02:46 PM, 07 Aug 2007 ET
Page author: qst@arrl.org
Copyright © 2007, American Radio Relay League, Inc. All Rights Reserved.