The mechanical performance of the antennas is vastly improved if you install the "++" modifications as suggested by W6QHS (now W6NL) in his book and in the two QST articles. You will need all three r
The QST articles are much easier to read, show more detail, and have corrections to the article incorporated as well as have some additional info not in the book. The first article is in November 199
Yikes, Mark, you better check your ROHN catalog and obtain a copy of ANSI/TIA/EIA-222-F-1996 Per my 1991 ROHN catalog, for 110 mph basic wind (no ice) your 110 ft of 25G isn't even on the charts! 100
A word of caution: Be sure you know the definition of (AND UNDERSTAND HOW TO USE) BASIC WIND SPEED before you use these data. If you don't, you are asking for trouble and will almost certainly make i
Scott, see my comments interleaved with original below: Hey you Trylon Tower owners out there... what did you use to ground your I have a Trylon-like tower, HD AB-105. My tower leg ground wires are#2
Bruce, You need to obtain (and follow) ANSI/EIA/TIA - 222 - F - 1997 and PloyPhaser book: The Grounds for Lightning Protection, second edition. . Please go to the towertalk archives and look at the t
As I posted to this thread about a week ago, I use regular grease on all my galvanized turnbuckles. Bill, N3RR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contes
RE: Safety HARNESS (not BELT). See my website under VENDORS/SUPPLIERS: http://www.erols.com/n3rr Re: Basic Wind Zone you need ANSI/EIA/TIA - 222 - E-1997. Se my previous posts on this or visit my web
The spec is actually ANSI/TIA/EIA-222-E-1996 Global Engineering Documents calls it: TIA/EIA-222-F I had the date wrong!! It's not 1997, it's 1996 Bill, N3RR -- FAQ on WWW: http://www.contesting.com/t
Thanks to Steve, K7LXC, for pointing out my typos. If this document were'nt so important to those on this reflector, I wouldn't correct it, but it is VERY important to all of us, so here it goes: ANS
As has been posted on this reflector many many times, many hams use the Loos & Co., Inc. tension gagues. They are available at most boat stores (Boat US, etc). I use Model B which accepts 3/16, 7/32,
Get yourself a licensed PE to analyze the situation and determine what the safe loading can be. Don't guess or allow yourself to be convinced by anyone on this reflector. Remember, it's your liabilit
Their web site is:http://www.therfc.com/ BILL, N3RR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk@contesting.com Administrative requests: towertalk-REQUEST@contest
Bob, It is very important that the antennas, feedline (electrical) lengths and alignment of the antennas in the vertical plane (for a vertical stack) be identical for a stack to perform optimally. To
Hi Don, Let me take a crack at your questions. You asked why use equal length coax vs odd multiples of 1/4 wave lengths of line. The biggest reason is that you can measure equal lengths (and I should
Joe, Yes, your DC voltage is blocked (stopped) at the PolyPhaser. However, PolyPhaser makes other models that allow the DC to pass around the device and lightning protects both leads. You don't give
Several of you asked where to get it: "Yagi Antenna Design" by Dr James L. Lawson, W2PV, published by ARRL Bill, N3RR -- FAQ on WWW: http://www.contesting.com/towertalkfaq.html Submissions: towertalk
One more thing, TIC RingRotors do not require the heavy duty wires that other rotors do. That's because the TIC motor is small and wormgear drive-based. control box shorts out the motor leads and sto
WE9V pointed out to me, correctly, that I was incorrect in my saying that the Ringrotors could use # 18 wire with a 500 feet cable run. The correct cable sizes are: Motor wires (two wires), for one m