But, Steve, Yaesu's instructions are very explicit in telling us to pin with the bolt provided! When I, as a believer in non-pinning, called Yaesu's tech support, I was told I must pin. Actually, con
Pete, Son-of-a-gun...I looked HARD for a brake on my exploded drawing; I even sent a posting to all my TT friends that there was no brake; then YOU snuck into my shack last night and added it to my p
Hi, Barry, My experience with my C4 should be somewhat transferrable to the C3S, I would think. First, measure all elements and compare them with the drawings in the manual. As good as F12's jigs are
We've used this scheme for K4BFT's field day 80/20 CW setup for the past six or seven years. The 80M inverted vee is supported above a 2el 20m quad which is at 50 feet. We used two lengths of Radio S
Jim, I had good luck using a 10" long eyebolt through the mast about 2 feet ABOVE the boom. I supported the coax loop (ran the coax thru the eye) from the eyebolt and adjusted the loop length until i
Gary, Before erecting my HG52SS, the HyGain parts lady (forgot her name) sent me a copy (unsigned) of their stress calcs. I recommend this highly for your HG-54HD! It looks to me that they used varyi
Dan, I also have this problem. In my case it's an HG52SS with a similar base. I obtained the HyGain stress calc sheets from the parts folks at Hy-Gain, and have had three base legs welded up using in
"Standard" sounds a little scary to me. For some, that might mean a boat winch with its free-wheeling ratchet...push the toggle the wrong way at the wrong time & down she comes! The original is proba
To: <towertalk@contesting.com> Eric, my tower is, for a number of reasons, adjacent to my shack, and my service entrance is at the diagonally opposite corner of my house. A 90-100 foot run around the
Yep. Similar triangles...it's just a simple proportion...no trig needed. B/(C+D) = ?/C or, ? = C x B/(C+D) Example: If you have a 100' tower (C+D), and the guys are out 60' (B), the distance out from
This is a test, right? Pythagoras sez (from his grave): C^2 =A^2 + B^2 where C is the length of your guy, A is the height at which you attach it to your tower, and B is the distance out from the towe
Nice story of a misunderstood farmer whose outward appearance belied his competence...clipped: So how long did it take for the "smart folks" to recognize his worth? How many opportunities did he miss
Dan, et al, Just to muddy the water a little (but to agree against rebar J-bolts): Hy-Gain uses rebar for their concrete base cage supporting their crank-ups. The rebar is welded to 1/4" steel tabs (
Chris, ZS6EZ asks-- F = PA, where F is wind force in pounds, P is the wind pressure in lb./ft^2, and A is the antenna wind area in ft.^2 P = 0.004 V^2, where V is wind velocity in MPH Examples: At 80
<<much snippage>> Before we can dismiss axial preload as a factor, we need to look at the method whereby the rotator acquires its radial (sideways) strength. This is important when a rotator sits bel
Ken, Don't let your animosity toward engineers cloud your judgement...these guys are right. They're trying to be helpful...not waving their slide rules at you! This kind of failure doesn't give any h
Luiz, I have been impressed with K6STI's Soundblaster DSP. It may well have the most sophisticated DSP algorithms af all the available approaches. He uses a Soundblaster soundcard responding to his m