There is a program called Radio Mobile. This is radio propagation and virtual mapping freeware that will answer your questions for you. It is designed to show expected VHF repeater coverage but I bel
I had my 40m 4sq installed with 8 buried radials under each element at a previous location. Never was happy with its tuning or performance and almost scrapped it when I moved. As an afterthought and
I see a few comments re Force 12's WARC-7 antenna so I thought I would add my experience. Antenna is at 37' above clear desert. I was grousing to W1XT re the antenna had unity Front to Back ratio on
The 2 element quad will be great for working Europe or Asia. I suggest a 2 or 3 element yagi at 20-30 feet above ground level for working domestic contests. During the contest season I mount a Force
Hmm. When I was working for RCA Broadcast as a television camera field engineer I would deliberately point our CCD cameras into the sun to show potential customers that no harm would come. Vidicon ca
Many years ago I had a 2 element 20m quad on a 6 foot boom at 90 feet. It was absolutely worthless on 20m and I am convinced that it was because the boom was too short. And I did adjust the driven el
Thanks David. I had a similar reply formulated but it hit the garbage bin. de Paul, W8AEF -- ZF2TA ZF2JI FO8DX FO0PLA 8Q7AA XZ0A -- -- Outgoing mail is certified Virus Free. Checked by AVG anti-virus
You may have a DX-100 tower. Specifications - Tower Height: Extended -101'5". Nested - 27'6" Weight: 2,900 lbs. In the description I note that "Galvanized aircraft hoisting cables (1/4" diameter) on
KI7NF wrote an article "Motorizing Your Crank-up Tower Isn't Difficult" which appears to be exactly what you want. Sorry, I do not know which magazine it was published in or the year (maybe 1997). Al
FWIW, I use an 18HT on 160 with elevated radials. The first version followed Hygain's method of base loading with a big coil at the feed point. Turns out that there is a high voltage point between th
The first time I erected my 40m 4 square I installed 8 buried radials at each element. I was not happy with it's performance to the point I almost did not put it back up when I moved. But I bit the b
I used a wire rope winch, rated at 4000 lbs, to pull my LM-470 vertical. I buried an 8" diameter wheel 3 feet in the ground with a 1/2" dia x 36" long threaded rod extending from the wheel to the sur
I have my 40m 4sq installed 9 feet above ground with elevated radials at that height and am very happy with it's performance. de Paul, W8AEF an use _______________________________________________ See
For my 40m 4sq I use the top rail from chain link fencing (1 3/8" dia x 10 feet long) to support the elements. The far end of each radial is supported at the top of a 4' long aluminum tube that slide
Powered crank-up with positive pull down. Accessories available from http://www.tashtowers.com/ Tower is located in Phoenix, AZ and is on the ground and ready for pick-up. Asking $2000 ______________
Does the control box growl at you when you are turning the rotator? If so check the rubber band that drives the dial indicator. I used a drive belt for a VCR to replace it. de Paul, W8AEF Hi I am try
Wilson MT-61 tubular crank-up tower with raising fixture. This tower extends to 52 feet and is rated for: height antenna in sq ft 61 2 59 3 56 4 55 5 54 7.5 53 10 based on 50 mph wind. Located in Pho
I just finished helping a ham erect a fan dipole for 40 & 80m. Tuned on 80 fine. NG on 40. When we swung one leg of the 40 to 90 degrees from the 80m element it tuned fine. It works so good <grin> he
I do not agree on the elevated radials as being overrated, for Arizona desert anyway. I had my 40m 4sq installed with 8 buried radials under each element. The tuning method for the array was to erect
I use 4 elevated radials under each element on my 4 squares for 40m and 80m with Comtek box and am very happy with the performance of both systems. W1XT (a near neighbor) prefered 8 elevated radials