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20 Meter Antenna

An Amazing  20 meter antenna.

Perfect for the Apartment or any place where you need a small antenna. Can be painted to alter the appearance. High Performance compared to other shortened antennas. Does not need a ground or counterpoise. 1.2:1 SWR at resonance. 600 Watts CW 1Kw SSB.  Don't let its small size fool you, this antenna will run with much larger antennas like dipoles and inverted V's, and G5RV's.

20 Meter antenna on a pole
It looks like the 40 meter version but is about half the size vertically and only 2 inches in diameter.  It's 1.5 feet tall, and 2 inches in diameter, not including the pole mount.

 Price: $ 109.95 includes base of your choice. Floor mount or Pole mount.
1SM20-2 1.5 ft. $ 109.95 free shipping
Extra floor mount: $ 9.00 free shipping
Extra Pole mount: $ 15.00  free shipping

Shipping free to the lower 48 states , see ordering page.

* Resonance is affected slightly by positioning of the delay line. This does not affect performance. However it will shift the swr point a little. With a tuner you can easily cover the whole band and Mars / Cap frequencies or I can adjust it for you.
This antenna is made from 2 inch pvc pipe, and the bottom mounting system  is interchangeable. The pole mount is shown. The antenna has a SO239 connector at the base to connect the supplied delay line and choke. On 20 meters the delay line is 11 feet long and is not part of the radiating section. The radiating part of the antenna is 80% of its length from the top down. SWR is 1.2:1 and the bandwidth is ~250 khz to the 2:1 vswr points. This antenna can (in some installations) cover most of the 20 meter band with a swr of less than 2:1.  The antenna is weather proof and can tolerate winds of 70 miles an hr. The pole mount is designed to slide over a antenna mast which is less than 1.25 inches in diameter, (most are 1 inch) with a stop bolt preventing the mount from sliding into the antenna. The stop bolt can be removed and you can drill a hole into the mast and put the bolt thru the mast and mounting pipe for a more secure mount. We have had no problems with just sliding the antenna onto the mast and forgetting it. Total length with the mounting pole is 4.8 ft. The pole mount itself is 42 inches long. You can paint the antenna any color you desire as long as there is no metal in the paint. You can place the antenna on the floor in an apartment, or window, or on a table. The only requirement is that you not place any metal objects within a few feet and do not set it on a metal table. The delay line must be layed out in a manner that will not make a coil or cross over itself.  Read the installation instructions.
Specs:  1SM20-2
Height: approx. 1.5 ft
Weight: approx. 3 lbs.
Design center frequency: 14.280 mhz.
Gain: 3dbi / 2 dbd, based on testing. Read design page or testimonials.
SWR at resonance: 1.2:1~ *
2:1 SWR Bandwidth: aprox. 150 khz.
Note: I recommend a antenna tuner for maximum bandwidth and use of the band.
Power handling: 600 watts CW, 1 Kw SSB.
Mounting: Pole up to 1.25 in. / or Floor/base mount. Specify which one when ordering.
1 year limited warrantee.
Note: Floor mount is not for setting on the actual ground. It is for apartments or tables that are aprox. 4 feet or more off of the actual ground. Setting the antenna on the ground will prevent it from radiating efficiently. It will also weaken the receiving properties when setting directly on the ground.

At tuner is recommended for all our antennas and they work well with internal tuners in most radios that can handle a 3:1 SWR. (Most all internal tuners handle 3:1 SWR)