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Amateur Radio2 Meter Slim Jim J-Pole Antenna
The Slim Jim Antenna is an end-fed folded dipole antenna that has a gain of 6 dbi and a nice low RF take off angle.With twice the gain of a standard J-Pole antenna, the 2 meter Slim Jim antenna is a J-Pole on steroids!The 2 Meter Slim Jim antenna a great solution for repeater sites, data and packet stations, APRS, and even every day communications. I use mine on a daily basis on my Winlink 2000 station.
Constructed out of 1/2 inch copper tubing for years of reliable service, and unlike wire antennas encased in PVC pipe, this Slim Jim antenna is a durable, heavy duty solution for your base radio needs.
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Trusted by hams world-wide, what makes a KB9VBR antenna better?
- Increased gain:compared to a standard J-Pole the Slim Jim has about 6dbi of gain
- More Bandwidth: The Slim Jim has approximately 8-10 Mhz of bandwidth, giving you better SWR across the entire 2 meter amateur radio band.
- 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 2 meter Slim Jim is still only 58 inches tall
- Hear weaker stations:lower noise floor than a wire antenna will help you hear more and capture distant signals better.
- High Power Output:Solid copper tube construction allows you to transmit 500+ watts of power.
- Dual Band Operation:Works well as a 2m/70cm dual band antenna. SWR at 146MHz ~1.2:1 and 445Mhz ~1.5:1.
Specs
- 58 inches tall, end-fed folded dipole design
- Gain: 6 dbi, 7 degree takeoff angle
- Bandwidth: 8+ Mhz
- Pretuned to 146 MHz: Just connect the coax and transmit
- Heavy duty construction out of 1/2 inch copper tubing
The [Slim Jim] antennas arrived today. I hooked one up to my transmitter and VSWR meter. I am impressed with the flatness of the antenna over the frequency range. Thank you. - Gerald Marsh
When would I choose a Slim Jim compared to a J-Pole antenna
Both the Slim Jim and J-Pole are great antennas and I continue to recommend both styles of antennas for different situations. The J-Pole will excel at lower mounting heights, apartments, or limited space locations. It’s 20 degree takeoff angle makes it a great choice for people living in valleys or the base of mountain ranges. It’s even radiation pattern is great for communicating with satellites and the International Space Station.
The Slim Jim likes to be mounted high. My experience with it is that you want to get this antenna up at least 20 or 30 feet for it to really perform. The lower takeoff angle is great for simplex communications with handheld or mobile radios. The low noise floor is perfect for data and packet stations. If you live on the top of a hill, go for the Slim Jim.
Mounting
The 2 meter Slim Jim needs to be isolated from your mast. If you use a non metal mast you should be fine. The antenna does come with a mounting kit that consists of a length of PVC tubing and two hose clamps. You will need two additional clamps to attach the isolator section to the mast.
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Please view my response.I have received many positive reviews because of the quality and performance of this antenna. I use top quality materials and individually test each antenna for quality control. This is a premium antenna at a great price; you will not be disappointed.
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