Davis, WA3GIN: Your not having all the facts, letters and notes of phone calls it is obvious your remarks are uninformed and shallow without fact. I'll defend your right of free speech, and therefore
Someone (I think that it was Brian Beezley, K6STI) suggested a few years ago that HF beams may be tested before installation by pointing them straight up in the air with the reflector just a few feet
OK, It looks like I am going to have to eat some words here. Either I didn't use the same type of tape as before, or something else was different. Anyway, I checked 2 different traps (P/N 878749 - 10
Greetings TowerTalkians, There have been some questions recently regarding how far apart a 6 meter beam should be stacked with an HF antenna, such as a tribander or monobander. Although I don't have
In looking over all the posted responses, it appears that none of these fellows care much about lightning protection. There are many articles published and all agree that all cables on the tower shou
Several people asked me to repeat the trap taping with 3M Scotch Super 33+ Vinyl tape. The 10 meter 878749 trap showed a frequency drop of 12 KHz. The 15 meter 878637 trap showed a frequency drop of
I Have 90' of Rohn 25G with a TH-7 on top, three feet above the flat-top top section. Top set of guys are philystran. I have a top ten devices relay panel at top of tower and am contemplating what is
is for end takes just any for end (Clay Co. -nr. Jacksonville) To: <towertalk@contesting.com> sorta -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com A
Andrews spec sheets say minimum bending radii are 5 inches and 10 inches respectively for the cables in question. 73 from Roger Rehr W3SZ ex-AA3QK ex-WA3JYM mailto:rrehr@epix.net FN20ah http://www.ep
Has anyone checked the calibration using 3/16 or 1/4 in dia EHS guy wire. It would be interesting to see how close it compares with the 1/19 stranded SS wire in the booklet. 73, Roger -- FAQ on WWW:
Johan, This design looks very nice! AO 6.5 with 10 seg/el gives 8.0 to 8.6 dBi on all bands with F/B better than 22 dB. An equivalent sized LPDA (13 elements, 15m boom, TAU=0.92, SIG=.09, 13.5-29.5 M
I am using LMR600UF; a bundle of 4 cables plus rotor running up my 72 foot US Towers crankup. I crank it up and down each time I operate (fancy neighbors). No problems, but I don't do it remotely, as
No, but it was very effictive at getting tourists to stop beside the road and take pictures! 73, Roger -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com
Do NOT use tape to protect the trap caps from UV! I have tried this and it severely detunes the trap resonant frequency and Q if black tape is applied to the outboard trap cap (high impedance end). I
TowerTalkians: In order to keep up-to-date with the most accurate method of determining antenna wind surface area, we will be adding the following new specifications to our antenna instruction manual
'em and two TH6's). This has, in the manual that came with my TH7, a wind surface area of 9.4 s.f. If this is the number that one matches with the Rohn 25G or 45G numbers in ovals or rectangles, the
I was able to find a Rohn catalog dated Apr 1993 (although the inside cover said 1991). It looks like the numbers in the ovals should be used, as these specify "allowable projected area (sq. ft.) for
I got mine recently from: Press Jones, N8UG, The Wireman, Inc., Landrum, SC, 29356 Sales (800)727-WIRE(9473) or orders@thewireman.com Tech help (864)895-4195 or n8ug@thewireman.com www.thewireman.com
Steve, I don't think that there is anything that was meant to be contradictory in those statements. "Flat" projected area was likely an emphasis added by the author to distinguish it from the areas w
The wind survival of an unmodified Hy-Gain TH3Mk4 is approx. 96 mph. Refl 96 mph DE 102 mph Dir 108 mph Boom 123 mph If 1.125" x 0.058" x 30" doublers (inserts) are added inside each 1.25" x 48" tubi