The length of the whip as it is in the package is 49" long. Trim the whip to the following for your specific use:
Land mobile, auxiliary civil services, satellite, space research, and other miscellaneous services
138 MHz -- 49"
140 MHz -- 48"
142 MHz -- 47"
Amateur Radio 2 Meter Band
144 MHz -- 45 5/8"
146 MHz -- 44 3/4"
148 MHz -- 43 3/4"
VHF business band, public safety, the unlicensed Multi-Use Radio Service (MURS), and other 2-way land mobile, FM
150 MHz -- 42 7/8"
152 MHz -- 42 1/8"
154 MHz -- 41 1/2"
156 MHz -- 40 3/8"
VHF Marine Radio; narrow band FM, 156.8 MHz (Channel 16) is the maritime emergency and contact frequency.
156 MHz -- 40 3/8"
158 MHz -- 39 1/2"
Railways 159.81-160.2 are railroads in Canada only and is used by trucking companies in the U.S.
159 MHz -- 39 1/2"
160 MHz -- 38 7/8"
Wireless microphones and TV/FM broadcast remote pickup
160 MHz -- 38 7/8"
162 MHz -- 38"
NOAA Weather Stations, narrowband FM
162 MHz -- 38"
Miscellaneous Frequencies
164 MHz -- 37 1/8"
166 MHz -- 36 1/4"
168 MHz -- 35 3/8"
170 MHz -- 34 3/8"
172 MHz -- 33 5/8"
television channels 7 - 13 (VHF-Hi), known as "Band III" internationally. A number of DTV channels have begun broadcasting here, especially many of the stations which were assigned to these channels for previous analog operation.
174 MHz -- 32 7/8"
Wavelength: 5/8
