I am planning on installing subject beam at 85' using the Orion 2800 rotator--both already on hand. These 80m yagi posting have me wondering what problems I may be facing. My plan is to install one s
I sure will appreciate TowerTalkians' experience and advice on subject problem! My plan was to mount a beam at the top of the second section of my new Triex LM470e (i.e. about 35') using a TIC Ring R
I have long wondered why the reflector on a yagi is longer than the driven element and why the directors are shorter. Also why do multiple directors increase the gain but multiple reflectors do not?
snip tales. Because I was seriously considering the Mosley Pro96 ($5000) to put on my new Triex LM470 (purchased through FirstCall--and installed), I welcomed the "fools" Mosley tales--and still do!
Can Towertalkers explain why antennas over salt water is such an improvement? It seems to me that if all of the RF directed downward is reflected upward, by the salt water, that is only a 3db improve
Two recent postings have 8' of a 21' mast and 6' of a 12' mast inside the tower. Why so much, if the bottom end of the mast is bolted to a sturdy rotator and mounting plate? I am planning to put a 11
The US Tower web site states that pipe is used for the legs whereas First Call's websites states that tubing is used for the legs in Triex tower legs. My memory fuzzily recalls reading that their is
Please give details to support your belief that "their competitor has a better product". I have both a USTower 72' motorized crankup and a new Triex 70' motorized crankup for comparing. treatment way
This 5BA suggestion is very timely for me as I have all but settled on two of them. However, should it be considered a long boom antenna(s)? If the drawing in the catalog is somewhat to scale, it app
If you use dipoles, I recommend you adjust each dipole separately and then connect them to the common feed point for final adjustment. And, get the dipoles as high as possible above the metal roof. B
NEAR VERTICAL INCIDENT SKYWAVE As the excellent article on p39 of Jan 1995 QST reports, NVIS propagation is basically straight up radiation without any skip regions i.e. continuos coverage out to ab
look in the Wiremans book III on page 35! -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contesting.com Pr
Please describe the connection for a pair of stubs, cascaded stubs-- this is a new concept for me! k7puc --Original Message-- From: George Cutsogeorge <w2vjn@rosenet.net> To: towertalk@contesting.com
If all of the radiated energy directed towards ground is reflected upwards by a "perfect salt water ground", then the skyward power can only be doubled--3db. Why then is a salt water location so cove
foot Don't forget --maybe the cable type depends on the rotator system design e.g. the possible need to keep cross coupling from happening between the motor drive current wires and the position sensi
These posting have been very interesting because I have been considering to shorten my 320' double extended zepp (80M) to a 122' half wave dipole. I have had the zepp for 6 years up around 90 feet. A
On the one hand, the vertical is often depicted sticking up out of the ground and having dotted rays of antenna current (field?) flowing out from it on their way to ground and back through ground to
-- Original Message -- > place all Wow! Something like three towers a day, 365 days each year-Sundays, Holidays etc and mostly towers larger than ham towers! k7puc ___________________________________