Authentic 2 Meter VHF SLIM JIM amateur ham radio J-Pole base antennaAmateur Radio 2 Meter Slim Jim J-Pole AntennaSpecs:58 inches tall, end-fed folded dipole designGain: 6 dbi, 7 degree takeoff angleBandwidth: 8+ MhzPretuned to 146 MHz: Just connect the coax and transmitHeavy 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 MarshWhen 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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