UHF 440-470 MHz Slim Jim Antenna

(4 customer reviews)

$42.00$46.00

Are you looking for a UHF omni antenna with a little more gain? Our UHF Slim Jim Antenna delivers up to 6dbi of gain on the 440 – 470 Mhz UHF bands, which is almost twice the gain of a J-Pole and 5 times the gain of a 1/4 wave ground-plane antenna. Plus the antenna also have the great low noise floor and wide bandwidth typical of our other antennas. This is a full Power UHF/GMRS antenna that will work great with handheld and base units. Don’t be limited in performance by VC encased wire antennas.

Clear

Description

 

The difference between a J-Pole and a Slim Jim is simple: while both share the same design, the Slim Jim folds another 1/2 wave element over onto itself, turning the single half wave concept of the J-Pole into a double half wave, or ed fed folded dipole antenna. The folded dipole nature of the Slim Jim gives you about 3dbi of extra gain when compared to the standard J-Pole.

Benefits

  • Increased gain: compared to a standard J-Pole the Slim Jim has about 6dbi of gain
  • Wider Bandwidth: Almost 8MHz of 2:1 bandwidth (double that of the J-Pole antenna)
  • More RF energy aimed at the horizon: with a take-off angle of about 7 degrees for the Slim Jim, compared to 20 degrees for the J-Pole
  • Compact size: the UHF amateur radio and land-mobile Slim Jim is only 19 inches tall
  • Hear weaker stations: lower noise floor than a wire antenna will help you hear more and capture distant signals better.

Specs

  • 19 inches tall, end-fed folded dipole design
  • Gain: 6 dbi, 7 degree takeoff angle
  • Bandwidth: 7+ Mhz
  • Pretuned to 445 MHz: Just connect the coax and transmit (Other frequencies available upon request)
  • Heavy duty construction out of 1/2 inch copper tubing

Special tuning to your particular UHF frequency between 440 – 470 MHz is available for no extra charge. Just leave a note during the checkout process of your frequency of choice and we will take care of the rest.

Additional information

Weight 1.5 lbs

4 reviews for UHF 440-470 MHz Slim Jim Antenna

  1. Warren

    Got it on the swr meter the other night and it measured 1 across the GMRS. Great “ham made” folded half wave antenna!

  2. Kevin

    Great GMRS antenna. Mine is installed approximately 18 feet above grade and I can hit a GMRS repeater located 45 miles away from my house using a 5 watt HT GMRS radio. Very low SWR. Overall, a great antenna. Thank you Mike

  3. Josh (verified owner)

    Great GMRS antenna! I set it up in my attic and I get awesome coverage in the Las Vegas valley here in Nevada. SWR is around 1.06.

  4. Norm

    Well made and was shipped quick. Took a min to talk with me on the phone, that speaks volumes to me. Highly recommended, don’t buy anywhere else.

Add a review

Your email address will not be published. Required fields are marked *

You may also like…

Subscribe To Our Newsletter

Subscribe To Our Newsletter

Subscribe to the KB9VBR antennas newsletters, the best amateur radio value in town. Receive notifications when new videos are posted, Find out what Michael is working on, sales & promotions, and get news about the amateur radio community. All coming to you about once a week. 

You have Successfully Subscribed!