After the fourth iteration I have made the 'final' decisions. The Spring (?) antenna/tower project will consist of 70' AN Wireless tower (*massive* windloading spec!), TH7 at 5' above top of tower, C
Gary, Can't comment on the antennas but my instinct tells me to put the remote coax switch down within easy reach - not necessarily at the base of the tower but not any higher than you can easily acc
great comment Mike. Those switches get cranky during the winter and when P5 says I'm standing by for W9D stations only...it's easier to put a barrel connector across the coaxes instead of troubleshoo
I must concur totally with these remarks! I have 100ft of Rohn 45G with the remote switch located at the 20 ft level, as I run elevated wires 250 ft to this tower, with tag-lines. Any coax losses at
Sounds like a great setup, but I believe not enough rotator. If you do use a Ham IV, buy several and be sure they are easy to change out, because IMHO you will be doing it often. 73, Jerry W5KP
A few thoughts: I don't like Ham-IV's. The top and bottom halves are held together by self-tapping screws that are a weak link. It's very embarrassing to come home and find the bottom half of the ro
A few thoughts: I don't like Ham-IV's. The top and bottom halves are held together by self-tapping screws that are a weak link. It's very embarrassing to come home and find the bottom half of the ro
Is there any documented work relating to the optimal mast position within a tower? For example, if one contemplates using a 20-foot steel mast with a Force12 C31 on one end, inserted into Rohn 55, w
I think this spacing may turn out to be too close, particularly between the A3WS and the TH-7. I think this is asking a bit too much of the Ham IV. A Tailtwister would be a stronger choice. Wouldn't
I also would suggest a different rotator. I have an HDR300 that has been seriously overloaded for 20 years and it has been nearly flawless. __________________________________________________ Do You Y
Not necessarily. The big question is what the county windspeed rating is. It's at <A HREF="http://www.championradio.com">www.championradio.com</A> under Tech Notes if you don't know. Let us know what
Author: Jim White" <k4oj@tampabay.rr.com (Jim White)
Date: Fri, 12 Apr 2002 15:22:51 -0400
Why not bring all your coaxes to the ground....and install the coax switch there... Why? In case of failure of the switch it is a piece of cake to diagnose and fix it.... Initially this is a bigger c
Actually, maybe Steve would like an all expenses paid "vacation" in PA! ;o) Gary a g 0 n at a r r l dot n e t http colon slash slash mcduffie dot ws --
I'll leave spacing and all that to others. But, the thing that seemed to stick out as I read it was the rotor. The Ham IV is pretty light. In fact, I might even question use of a T2X, especially sinc
I would not recommend the HDR300. I owned two of them for several years and they needed servicing many times. The biggest problem was that the shaft keyway would elongate and become very sloppy. The
Interesting, I've got a 3 3l 40 meter KLM, 7 element F12 15 meter monobander, and Hygain 5 el 20 meter monobander on a 20' chrome moly mast with steps on it. And I've never had a problem. Could the d