[PPRAANet] Tower mount

[alpenney at pcisys.net]

Hi Les,

Unless Rohn has totally gone out of business (they were having bankruptcy 
problems last year I believe), you should be able to get a hinged base 
plate from Electro Comm in Denver (cheaper than HRO), phone number (303) 
371-8121.  The part number is BPH25G.  I got one there about 2 years ago 
(sorry - I still need it!).

Unless you plan on putting a bunch of beams on the tower, for 40 feet of 
Rohn 25G you need three 48 foot guys - attached to the tower at the 35 
foot level, with the guy anchors 32 feet from the tower base (assuming 
level ground).  Of course, with a hinged base, it makes sense to use 4 
guys so that raising and lowering the tower requires fewer people.  To 
avoid resonance on Amateur bands, you will also want to break up the guy 
wires with egg insulators (DO NOT use regular insulators!) at 12 foot 
intervals.

73
Al
VO1NO / W0


> Hi All,
> 
> This summer I will try to put up a antenna tower at my QTH. I have 
about 35 
> feet of Rohn 25 that I will install.
> 
> I have been told not to climb towers anymore so I need to come up with 
a way 
> to lower the tower for maintenance. My First chose is a mid-section 
> tilt-over section. These were made at one time but how only available 
as 
> used units. The next good way is the hinged base plate mount, also no 
longer 
> available new.
> 
> If anyone knows the were I could obtain either of these units, please 
let me 
> know.
> 
> Also I am in need of guying cable/wire. I will need about 250 to 300 
feet.
> 
> Thanks and 73's
> 
> Les KC0NC 
> 
> 
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