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K40 Trucker CB Antenna


  • Made in the USA and backed with a five-year warranty
  • An ultrasonically sealed coil prevents corrosion over time
  • Can handle up to 3,000 watts of power
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The K40 Trucker CB Antenna sets the bar high for other CB manufactures. Made in the USA, this antenna can handle an impressive 3,000 watts of power. Its build is top-notch, as the coil is ultrasonically sealed to prevent corrosion. The coil of the K40 trucker is installed 10" off the mount and has a 49" whip that attaches to the top of the coil. K40 is so confident in its trucker antenna, it backs this product with a five-year warranty. This is a quality antenna that will survive years of tough use!

Model / SKU:K40 TR40
Recommended for:Trucks, semis and other heavy-duty vehicles. High performance CB use.
Notable Features:Made in the USA, 3000 Watt, 5 year warranty
Compatible with:
Antenna uses male 3/8" x 24 thread, compatible with all standard CB studs and mounts available. Heavy-duty mount recommended.
Antenna Length(s):
Antenna Color(s):
Approximate Range:
Range(s) provided are for comparison purposes only and are subject to numerous installation and environmental variables. For more detailed information, please see our reference article on CB Antenna Range Approximation.

  • Approximately 7 to 10 miles
Product Includes:K40 Trucker CB Antenna
Mount and coax cable sold separately

K40's Trucker CB Antenna is a well built, center-loaded antenna that's guaranteed to outperform any similar CB antenna. In recent testing by the U.S. Dept. of Commerce, the K40 trucker antenna outperformed the Wilson 2000 in gain, VSWR and bandwidth on all 40 channels. Testing was performed by the National Institute of Standards and Technology, the same agency whose U.S. Atomic Clock is the world standard for all computer clocks and the Global Positioning System. Materials and workmanship are guaranteed for a full five years from date of purchase. Any part that fails to perform satisfactorily within that period will be replaced absolutely free with proof of purchase.

  • 49" stainless steel 17-7 tapered whip
  • 10" shaft length with 3/8" x 24 threads
  • 3,000 watts AM power handling capability (ICAS)
  • Frequency range 26-30MHz
  • 1.6 MHz bandwidth
  • 1/4-wavelength design
  • Tunable design
  • Designed for CB and 10-meter radios
  • Special design for weather band reception
  • Can be used as a single antenna or co-phased for dual antennas
  • Solid 8-gauge 100% silver-plated wire for maximum efficiency
  • Radiused 180-degree tip for maximum range and clarity
  • Chrome-plated whip adapter
  • Ultrasonically sealed housing eliminates water corrosion
  • Exclusive computer-aided MetlPlas process molds
  • Metal and thermoplastic in a single part for maximum reliability


Customer Reviews

Based on 3 reviews
Ralph H.
This is my first experience

This is my first experience with K40 CB Antenna's. I've Always used Wilson 5000's but I thought I'd try K40's this time around and I have to say that I'm very impressed with the K40's. I'd have to say that they're at least as good as my Wilson 5000's were maybe even a little better. They have great range of course my radio is not stock either but the range of transmitting and receiving seems to be about the same and the clarity as well. I am not disappointed that I sold my semi with my Wilsons when I retired. I HIGHLY RECOMMEND THE K40's They're AWESOME and they're cheaper then the Wilson 5000's. But both are great antenna's.

Robert C.
K40 power

Really nice antenna that produces a powerful signal!!

Twitch Radio 407
K40 vs Wilson 2000

I got this antenna to test against my Wilson 2000. First off let me start by saying that the customer service here is top notch. I got my items within 3 days and when I had questions, I emailed them and they got back to me with in 35 minutes or so. So 5 stars all the way for you guys! Great job!

I got to say that this antenna is very well made but I believe that the Wilson is a bit better when it comes to receiving signal due to some people having problems with the tip breaking off, though I had no problems with it. Well, hands down! I would have to say K-40 antenna takes the cake. The Wilson 2000 had 5-s units of static where the K-40 only had maybe 1-s unit. And I could hear further on the K-40 vs the Wilson. For transmission, in my tests the K-40 was just a little better. Same signal for both but but they said the K-40 had a little more audio for some reason..

Equipment used and test parameters:
Magnum S-3
Side mount by drivers side
18 ft coax (fire ring)
2 pill TNT HD 350
Dead key 60watts swinging 423 watts pep
Dosy test meter
Tahoe z71 2002
Receiving station was 13.67 miles away and all setting on radio and location were the same with in a 20 minute test time

Over all, due to the noise cut out / reduction, I think I'll stick with my K-40 antenna. It was easy to tune. I had to cut off like 2 1/2 inches to get it to a flat match which was kinda expected.

Anywho, Twitch Radio 407 coming at you from the south side of Seattle WA. 73s and have a good one!