Lightweight 5/8 wave VHF antenna with NMO base. Designed to be used with almost any radio in the UHF band including Amateur Radio, Business Band, Marine Radio, and others.

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"