NEW! Dual Band Slim Jim J-Pole More gain than a standard J-pole!
Thank you for visiting my sale. Here we have a dual band Slim Jim that still has that great Slim Jim gain but allows operation on the 70cm band also. The secret is in the coax stubs that act as traps at high frequencies and shorten the electrical length of the antenna.
Features:
Length - 6 Feet tip to connector.
1.5:1 Bandwidth > 4mhz
Power Handling - 100 watts
Gain - Approx 6dbi 2m 5dbi 70cm
Weight - 6oz
Connector - so-239 / N-Female*
Construction - 450 ohm ladder line with short Coax stub. You can see from the illustration that the half wave radiator folds back on itself. This essentially creates an end fed dipole yet still retains the j match system. The traps isolate the bottom of the antenna at high frequencies to allow dual band use. The lower half of the antenna becomes a 70cm j-pole. At 2 meter frequencies the wave doesn't see the traps and acts as a regular Slim Jim antenna. This antenna can be supported by many things including trees, ceilings, curtain rods and pretty much anything else you can dream up that will support 6oz of weight and keep the antenna a couple inches away from solid objects. These antennas are great for E-COM activities, field expeditions, hotel rooms and base station use too. I use one as a base antenna myself as it performs better than my 1/2 wave vertical. This antenna is available with either a female UHF or an N Connector please specify in note to seller on Paypal or through personal message which connector you desire. If there is no note the default connector is the female UHF.
The matching section is soldered then sealed with double wall adhesive type Heatshrink to protect it from the weather. This plot shows the resonant areas of this antenna. The 2 meter portion still retains its sharp highly resonant features. Plus we add quite a bit of bandwidth on 70cm making this a great little field antenna.
* I use Amphenol N connectors they cost more than double my normal connectors. I therefore charge an additional fee of $3.00 for N connectors. Please request an invoice if you require an N so I can adjust the price.Item pictured is not actual antenna but all are built the same.Most of the cabling on this antenna is made in the USA.

On Sep-18-09 at 19:16:12 PDT, seller added the following information:

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