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The Screwdriver Model 3600 is 36 inches tall fully retracted. After using and looking at other companies screwdriver type antennas, it is by far the best built, best performing, and best looking antenna on the market today. All parts are machined in house to one thousandth of an inch tolerance. When correctly installed this antenna will provide continuous coverage from 80 thru 10 meters with a 5 foot whip, with an SWR of 1.5 to 1 or less. The motors are 12 volt, High Torgue screwdriver type with high quality planetary gear reduction. We machine a new output shaft for the motors so coupling to the drive shaft is neat, clean, and very durable. We install filter capacitors on the motors so they are very quiet if you receive tune. There are several reasons why I chose the screwdriver type motor. The Pittman 12 volt commercial grade gear motors are rated at less than 1 inch-pound. you can get a replacement at your local Hobby or Radio shack store. The fiberglass coil form is also made in house, we lay up the fiberglass and resin to a 5/16" wall thickness and then machine to 1/4" wall thickness. We then machine U shaped threads into the coil form for the 14 ga. wire. 14 ga. wire is approximately .065" so we cut the threads .055" deep, we then apply another coat of resin and wind the wire, so approx. 80 percent of the wire is embedded in the resin to hold it in place. The other companies only cut a shallow groove, most of the wire is unsupported. The coil is wound at 10 turns an inch for higher inductance and efficiency. Click picture for wire detail. The paint is an Automotive Color-Coat Clear-Coat Lacquer finish, First we apply Dupont self etching primer, the Fill & Sand Primer, then Wet-Sanded. Then the Color-Coat is applied and Wet-Sanded, and finaly the Clear-Coat is applied for a durable long-lasting finish. The antennas come in your choice of (Black, White, Red, or Blue). Custom colors to Match your Vehicle are also available at your request, (a small charge may apply). The feed point uses an SO239 connector and transformer match, instead of a shunt coil, for better performance. If needed the transformer can easily be re tapped to match your application. The transformer is enclosed to keep water (ice) and dirt away from it, unlike others that use a shunt coil that is exposed to the elements. All antennas have a built in turn encoder that counts 5 times per revolution of the drive shaft for higher count resolution. It will work with all controllers, however, all our antennas come with a digital controller. |
SPECIFICATIONS"center"> Height fully retracted no whip 36 inchesFrequency Coverage with 5ft. whip -- 10 thru 80 meters Power Rating -- 1.5 Kw continuous. Typical SWR -- 1.5 to 1 or less Total Height with 5ft whip at 10 meters -- 8 ft Total Height with 5ft whip at 80 meters -- 9 ft 2 inches Weight -- 12 lbs. 1 year warranty on antenna and controller. Lifetime warranty on coil and fingerstock. |