Antennas Nil-Jon

   
 
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Nil-Jon Super M
Saturday, December 25 2004 @ 18:18
Nil-Jon Super M
The NIL-JON Super M Base may have an unusual appearance, but it is a versatile VHF-UHF antenna providing very high performance. The receive range is 25 to 1300 MHz. It may be used for transceive applications at these frequencies: 144-148 and 435-465 MHz. Power capacity is 200 watts and tuning is not necessary. The unique design is dual polarized to provide a big signal at the horizon and out of the valley.
View pattern comparison: Nil-Jon Super M
The three elements are between 16.5 and 19 inches.
View plot:
Nil-Jon Super M
CQ Magazine tested the Challenger and established that on 2 meters, for example, its gain was approximately 6 to 8 dB. On 40 meters compared to a mono band vertical, they found Challenger an S unit stronger. This is typical of the many reports received from amateurs around the world. Challenger is designed to be mounted directly in the ground or elevated. A ground mount is provided with each antenna. With the ground mount in place, the Challenger simply drops in. If necessary, because of space limitations, but not to improve performance. Challenger may be roof mounted since it does not require earth loss to obtain a 50 ohm match. Challenger requires a counter poise of three 25 foot insulated wires. They may be buried or just scattered on the ground. Symmetrical deployment is not critical. Adding additional wire will not significantly improve performance. All of these are covered in a 16-page assembly manual provided with each antenna.

Technical specifications :
 + Bands: 80, 40, 20, 15, 12, 10, 10, 6 and 2 Meters.
 + Bandwidth (<2:1): Entire band on 40, 20, 15, 12, 10, 6 and 2 meters.
      > 130 kHz on 80 meters and > 1 MHz on 10 meters.
 + Connector: UHF (SO239)
 + Radiation Efficiency: Exceeds conventional verticals by up to 600%
 + Height: 31.5 feet
 


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