Tram 1481 Dual Band 3 Section Base Antenna (144-148/430-450 MHz)

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Details

Dual band UHF/VHF fiberglass base antenna
17 ft. (5.18m) tall
Three sections
5/8 wave 3 elements c-load (2m) and 5/8 wave 8 elements c-load (70cm)
20.5" (52cm) radial length
144-148MHz (VHF)
430-450MHz (UHF)
4MHz bandwidth (VHF)
20MHz bandwidth (UHF)
8.3 dBd gain (VHF)
11.7 dBd gain (UHF)
Radiator and coil are hermetically sealed in fiberglass tubing for low SWR in all weather
DC ground construction allows static dissipation for low noise ratio and maximum lightning protection
Mast diameter accepted is 1 3/16" to 2 7/16" (30-62mm)
UHF Female (SO-239) connector
Max power 200 watts
50 ohms
Maximum wind 90mph (40 m/sec)
Includes assembly instructions

gmrs performance review by bill on 6/8/2023

Rating

this antenna resonates perfectly at 467.675,,we use it for a gmrs repeater antenna,and it works perfectly
Good antenna, especially for the $$ review by JMac on 8/17/2015

Rating

Good antenna on 2m and okay on 440 depending on the frequency. We are using this antenna as a temporary solution on our VHF & UHF repeaters until we can afford quality 4-bay dipole antennas. We have them stood out from the tower 4.5 feet plus supported at middle of the antenna and near the top because of the thin wall fiberglass construction. It has already withstood 60 mph winds from a thunderstorm - it just stood right in place didn't move an inch. So far, so good. SWR 1.4:1 on 2m and 1.7:1 on 440, but a scan of the antenna shows SWRs on 2m & 440 repeater bands as low at 1.2:1 and 1.4:1 respectively.