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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The importance of a good RF ground can not be over emphasized as has been very well documented by K0BG. Still very early days. Don’t hesitate to buy this antenna The Lexus is the first vehicle make out of over 70 cars I have owned that has zero noise.

I installed this antenna in my pick up truck and the performance is great. 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.

Diamond Mobile Antennas for Shortwave

I bought one a year ago and it works very well. As any mobile antenna the SD requires the body of the car as counterpoise. This arrangement worked quite well, but necessitated having a “Hamstick” for each of the bands I’m interested in using. The dia,ond design permits me to adjust the SWR to 1: Seems to be a normal mobile antenna.


But they diamknd not so practical for use on small sedans. After I arrived in San Diego I did try the antenna on a variaty of bands and I am very pleased with the performance. Contact the site with comments or questions. I could tune it on all bands from 40 to 10 without problems to 1: To change frequency you first tune the antenna to maximum noise on the sd303, then start transmitting with low power 10W and tune for best SWR.

Too bad, great looking but unreliable. Hope I haven’t just jinxed myself, hi hi! SD Cable with control.

Had it apart many times to tighten hardware and then try later to modify it to keep it from vibrating loose. If the grounding is not sufficient especially on the low bands 80 and 40m an additional magnet mat MAT can help.

I use it mainly on 14 ,18 ,21 and 28 Mhzs and mounted on a tri- mag mount. In addition, the relatively narrow bandwidth of such an antenna, especially on dianond lower frequency bands, requires adjusting the length of the whip to go from one end of the band to the other. Due to the comfortable adjustment of the antenna diamobd can tune without leaving yopur car.

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Also suitable for space restricted environments, e.

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Works well on 40 meters even with the short whip surprisingly! Long whip loads from about 32 MHz to well below 80 meters. With a goood counterpoise an SWR equal or better than 2: I also bought the Better RF Tune control and screwdriver control. Efficiency wise, if you want the ultimate mobile antenna, you might have to try a Bug Catcher.

Built extremely well like a tank and is diqmond performer. I have given up and scrapped it.

Diamond SD Mobile Screwdriver Product Reviews

Short whip loads up from just below 6 meters to mid 4 Mhz. Internal tuners of most rigs are usually not suitable. The SDC-1 power supply voltage is usable from ,5V and will delivered with a cigarette lighter plug.