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The K40 TR40B is a tunable CB and 10-meter antenna built for truckers and off-roaders. It handles up to 7000 watts AM ICAS, covers 26-30 MHz with a 1.6 MHz bandwidth, and uses a quarter-wave design with a 49-inch tapered stainless whip. Its sealed housing and MetlPlas construction resist water and corrosion, and it can run as a single antenna or co-phased for dual setups. The 5-year warranty is longer than most CB antennas offer, which is why owners treat it as a durable long-term pick over cheaper fiberglass whips.
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Owners of K40 trucker antennas generally report strong transmit and receive range and hold up well to weather and vibration. Many praise the build quality and the long warranty. Some note that tuning is fiddly and the tall whip is awkward in low-clearance spots.
The K40 TR40B Trucker is a 1/4 wave, tunable antenna for CB and 10 meter radios. It covers 26-30 MHz with a 1.6 MHz bandwidth and handles 7000 watts of AM power (ICAS). It is also designed for weather band reception.
It uses solid 8 gauge, 100% silver plated wire and a 49 stainless 17-7 PH tapered whip with a radiused tip. The whip adapter is chrome plated. The housing is ultrasonically sealed to keep water from causing corrosion. A computer aided MetlPlas process molds metal and thermoplastic into a single part.
It can be used as a single antenna or co-phased as a dual antenna setup. It has a 5-year manufacturer warranty.
