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

All Frequencies in MHz
160 Meters:	1.885, 1.900, 1.945, 1.985
75 Meters:	3.825, 3.870 (West Coast), 3.880, 3.885
40 Meters:	7.290, 7.295
20 Meters:	14.286
17 Meters:	18.150
15 Meters:	21.285, 21.425
10 Meters:	29.000-29.200
6 Meters:	50.4 (generally), 50.250 Northern CO
2 Meters:	144.4 (Northwest) 144.425 (Massachusetts) 144.28 (NYC-Long Island) 144.45 (California)