the Ham IV fits fits nicely into the top section of my TX472 (should be the
same top section as the US tower 55' job).
Here is the "logical" approach I took.
1. What is cost of Orion (which does fit but has issues of its own, already
2. What is the cost of a "second" Ham IV?
3. What is the cost to repair a Ham IV (CATS or whomever you like) - typically
4. How likely is it that the Ham IV will get "ripped apart" in X years?
5. My decision: I now have two Ham IV's. One is always "ready" to get put
into the tower if the one already in there fails. Swapping them is very easy.
I have read that lots of you want to fold over tower to do that. I never have.
I crank it up so the "rotor area" is exposed, I lock the sections (any of
various methods work well), I lock the mast (after jacking it up an inch) and I
slip out the old and slip in the new. I send the "bad one" for repair.
6. It will take me many decades of this process before I approach the cost of
the Orion rotor.
I am turning a 4L 20 on a 32' boom and a 2L shorty 40 (402CD) along with a WARC
dipole (cushcraft). There is lots of wind and ice here in NNJ at almost 1000'
ASL. I never crank the tower down unless there is a hurricane forecast. So
far (I've been here 20 years), I have had ONE repair.
>From a cost benefit analysis, the answer (for me) is obvious.
de Doug KR2Q
See: http://www.mscomputer.com for "Self Supporting Towers", "Wireless Weather
Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions
and ask for Sherman, W2FLA.
TowerTalk mailing list