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The Diamond SD is a motor driven mobile antenna for shortwave, from 3 to 30MHz. The Diamond SD screwdriver is your efficient antenna solution for mobile HF With the main SD element enjoy operation on any frequency from to. Diamond SD Mobile Screwdriver product reviews by real people like you. Only at – is a Web site dedicated to ham radio (amateur.

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Short whip loads up from just below 6 meters to mid 4 Mhz.


In addition, the relatively narrow bandwidth of such an antenna, especially on the lower frequency bands, requires adjusting the length of the whip to go from one end of the band to the other. The Lexus is the first vehicle make out of over 70 cars I have owned that has zero noise. Internal tuners of most rigs are usually not suitable.

This arrangement worked quite well, but necessitated having a “Hamstick” for each of the bands I’m interested in using. Base with PL connector, extension coil in the middle center loadblack, whip stainless steel.

The antenna looks great with high gloss black finish. SD Cable with control. But they are not so practical for use on diiamond sedans.

I bought one a year ago and it works very well. Diamonr was nice of Diamond to include a ferrite on the screwdriver control cable.

Contact the site with comments or questions. The two radials remain at 33 feet each, even on 75M. Not to worry however, as I’ll probably be upgrading to an automatic screwdriver controller eventually. I am very pleased with the SD’s performance.

  CAPM 39-1 PDF

Had it apart many times to tighten hardware and then try later to modify it to keep it from vibrating loose. My Lexus has zero noise on all frequencies so mobile use is xiamond. I’ve had this ant for about a year. The frequency and position count number will be shown at that time. If you have any questions, problems, or suggestions about Reviews, please email your Reviews Manager. With the optional radiator OPE 77cm the antenna has a length from to cm.

My Subscriptions Subscriptions Help. Tuning is simple and the results are great considering the size and made in Japan.

I don’t “foresee” any issues. No need to change the antenna when changing bands. So the power was restricted to some 50 watts. Built extremely well like a tank and is flawless performer. The tuner should be mounted as close as possible to the antenna. I could tune it on all bands from 40 to 10 without problems to 1: Due to the comfortable adjustment of the antenna you can tune without leaving yopur car.

With this short radiator operation is possible from 7 to 52MHz. I purchased the continuously adjustable SD over a year ago, and I’ve had good success on 40M as well as surprisingly good success on 75M. Add to shopping cart. Screwdriver Mobile HF Antenna. With the supplied cm radiator the antenna has a total length from cm 3. As any mobile antenna the SD requires the body of the car as counterpoise. All antennas are equipped with a telescopic tuning element, not wire cutting needed.


TKA wide band mobile antenna 1. I did not have a very elaborate ground setup in the car because I had to leave install in a hurry. I also bought the Better RF Tune control and screwdriver control. New to Ham Radio? Got in a swap.


I use a small, 12V lithium ion battery pack to power the antenna’s tuning motor, since it draws only about mA. A simple reverse voltage protection is integrated into the device. The alignment of the antenna is done by adjusting the length of the upper whip. I use it mainly on 14 ,18 ,21 and 28 Mhzs and mounted on a tri- mag mount.

During operation, the SDC-1 requires a maximum diiamond mA. If the antenna is used at home a suitable counterpoise system must be built with wires. Long whip loads from about 32 MHz to well below 80 meters. With a parked car not while driving a smaller PL magnet diaomnd can be used as well, with the huge triple magnet base operation may be possible even while driving.

New cars are not so friendly when it comes to wiring straight from the battery. I set up the system shortly before I left Ohio with out a lot of elaborate grounding. Works well on 40 meters even with the short whip surprisingly!