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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So the power was restricted to some 50 watts.
SCREWDRIVER ANTENNA/DIAMOND ANTENNA CORPORATION
I could tune it on all bands from 40 to 10 without problems to 1: I use a small, 12V lithium ion battery pack to power the antenna’s tuning motor, since it draws only about mA. Only had it on the car about a week and like I said, very few QSO’s yet. Having the need to confront reduced mobility, I needed to find an alternative to erecting my 40 and diamone meter trap dipole while on vacation. I use it mainly on 14 ,18 ,21 and 28 Mhzs and mounted on a tri- mag mount. Add to shopping cart.
The antenna looks great with high gloss black doamond. I could not sell it to some one else and sleep at night. Too bad, great looking but unreliable. This arrangement worked quite well, but necessitated having a “Hamstick” for each of the bands I’m interested in using.
In stockshipped in sd30 or two days. Also diamod for space restricted environments, e. There was no scope in the firewall of my Accord to bring in the heavy gauge wire. I also bought the Better RF Tune control and screwdriver control.
Diamond SD Screwdriver Antenna
I have given up and scrapped it. Works well on 40 meters even with the short whip surprisingly! The tuning is a wee bit fast, but once you get used to it, it’s easy to tune in any band, first by listening to dlamond noise, then fine tuning the SWR. The frequency and position count number will be shown at that time. Coil is 16 turns on daimond diameter plastic pipe of about 2mm dia enamel wire.
Had it apart many times to tighten hardware and then try later to modify it to keep it from vibrating loose.
Internal tuners of most rigs are usually not suitable. With a parked car not while driving a smaller PL magnet base can be used as well, with the huge triple magnet base operation may be possible even while driving.
If the antenna is used at home a suitable counterpoise system must be built with wires. Hope to use it roving to give out Texas counties in the panhandle during the next Texas QSO party ; will keep you posted! The alignment of the antenna is done by adjusting the length of sx330 upper whip. Customer specific antennas telescope antennas etc. Still very early days. SD Cable with control. Due to the comfortable adjustment of the antenna you can tune without leaving yopur car.
New to Ham Radio? The Lexus is the first vehicle make out of over 70 cars I have owned that has zero noise.
Diamond Mobile Antennas for Shortwave
I worked both coasts all the way across the country with out any difficulties on 20 M and 40 M. After I arrived in San Diego I did try the antenna ds330 a variaty of bands and I am very pleased with the performance. Short whip loads up from just below 6 meters to mid 4 Mhz.
If I had to find a ‘fault’, I’d have to say it’s the antenna screwdriver control switch, which is pretty flimsly. Hope I haven’t just jinxed myself, hi hi!
Base with PL connector, extension coil in the middle center loadblack, whip stainless steel.
I set up the system shortly before I left Ohio with out a lot of elaborate grounding. My Subscriptions Subscriptions Help. I installed a coil at the base to shunt the antenna to lower the feed impedance on the lower freqs and the SWR is perfect.
Screwdriver Mobile HF Antenna. Efficiency wise, if you want the ultimate mobile antenna, you might have to try a Bug Catcher. If the grounding is not sufficient especially on the low bands 80 and 40m an additional magnet mat MAT can help. The supply voltage 12V is taken from the cigar lighter. I went with the Diamond because of fit, finish, and complete meter capability with two different whips included: Just one antenna for HF, 6m, 2m and 70cm!
But they are not so practical for use on small sedans. TKA wide band mobile antenna 1.
It was nice of Diamond to include a ferrite on the screwdriver control cable. I did not have a very elaborate ground setup in the car because I had to leave install in a hurry. Dimaond couldn’t be more delighted with this antenna. Got in a swap. Not to worry however, as I’ll probably be upgrading to an automatic screwdriver controller eventually.