Right Channel Radios
Mobile CB Radios and Antennas

K40 CB Antenna - 58" Magnet Mount

Reviews: 9




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Product Description

This magnet mount antenna features incredibly easy installation and superior performance over other similar antennas. Unlike other antennas, the K40 antenna can be installed using the included magnetic mount accessory, the standard trunk-lip, or even as a permanently mounted roof-top antenna! If you decide to change the installation type after purchase, it's not a problem: this antenna will allow you to do all three!

K40 guarantees their magnet mount antenna will work better than your current similar antenna or they'll refund your money. (See manufacturers site for full details)

  • Magnetic Base for Easy Installation on all Flat Vehicle Surfaces
  • Can also be installed permanently on roof, or with included trunk-lip adapter
  • 120lb Pull Magnet Strength
  • 57 1/4", 17-7 Stainless Steel Whip Antenna
  • Includes 18' Custom-Made RG-58A/U 95%
  • Shielded Coax, Stranded to Prevent Breakage
  • Exclusive METLPLAS Construction for Superior Performance
  • Unique Capacitor for Consistent SWR Across all 40 Channels
  • Base Rotates 30 degrees for Proper Vertical Polarization
  • Special Radiused Tip to Dissipate Static
  • Whip Retracts 2-1/4" Into Coil for Super Easy Tuning
  • Isolation Chamber Reduces Static Damping
  • Quarter-Turn Release Makes for Easy Removal of Coil and Whip
  • Made in the U.S.A.
  • Available in Black Only
  • Five Year Warranty

Model Number: K40M + K40
Visit manufacturer's website.

There are 9 customer reviews. Average Rating:

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Date Added: 07/25/2010  by  craig austin

I have used a K40 magnetic base, steel whip for over 30+ years and it to be better in all aspects, especially than the Wilson. The little Wil I have will not go below 3.5 SWR... To reply to an above comment, they do and have always made a plastic cover for the base if you take the whip off (good idea, too easy to steal). Get spares, they get lost easily. It is getting harder to find K40 stuff at truck stops for some reason. Even on the internet it is spotty for getting an intact magnetic base. The K40 manufacturer site is not much help either. The price here is in line with the price I paid for the combination as far back as I can remember so if this outfit is a reliable source, my next base (they do rust internally in time) will come from here.


Date Added: 01/05/2010  by  Big Bad Wolf

My mom purchased this antenna for me for my 02 trailblazer. When she put shipping info in she put the wrong zip code. RCR was very quick to contact her and have her give the right zip code. Easiest antenna I have put on yet. No tuning of antenna required which I had to do with the lil wil I had.

5 stars for sure


Date Added: 11/19/2009  by  Milton Montgomery

I would like to thank you for your quick shipment of my new K-40 Magnetic base antenna. I only use my CB during hunting season. I have had great reception and transmission with my new antenna. I have an older version which is fiberglass and spring loaded which I can easily change if needed with the quarter turn release. I have used K-40 antenna products for the past 25 years. Great product and great service from Right Channel Radios.

Thanks Again For Great Service.

Milton Montgomery
Richmond, Va


Read all 9 customer reviews
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