Last Monday night N6RO brought a slick gizmo to our club meeting for "show
and tell". I'll try to describe this thingy...
1. Start with a piece of angle stock about 18 to 24 inches long.
2. Put a muffler clamp at one end to go around the boom.
3. At same end, put the tram pulley.
4. At the other end, put a caribiner, also to go around the tram line.
5. Clamp this assembly to the boom, coming off at right angles like a "one
sided element".
Note that now you have stabalized the antenna in two dimensions!! The one
any only time I tried tramming was a hopeless failure (this was long before
I started reading TowerTalk) so I was much impressed with the possibilities
of this gizmo. Hope I did a decent description. N6RO claims great success
with this device... you still need tag lines to control "rocking" around the
axis of the tram line... but the claim is much easier tramming.
73, Dave N6NZ
-----Original Message-----
From: W4nf@aol.com [mailto:W4nf@aol.com]
Sent: Thursday, October 14, 1999 5:31 AM
To: towertalk@contesting.com
Subject: [TowerTalk] Tramming Primer? Need Info
Hello everyone,
I will be finished on Saturday with the assemby of the C3E and plan to put
it
up the next weekend. I'm interested in using the tramming method to get it
up to and in place on my 75' tower. I will have the mast sticking out of
the
top of the tower about 6 feet when I mount the C3E. (I will be mounting the
C3E 4' down from the top of the mast based on my wind load calculations and
approved building plans). After I get the C3E on I will push the remaining
mast up through the tower and mount the 40-2CD about a foot above the tower
top. This will give me about 11' separation between the C3E and 40-2CD with
a total of 16' of mast out the top of the tower.
Anyway, I have looked through the archives and was able to gather some info
on tramming but I still need information such as:
1. What to use for the tram line (rope, wire rope, sizes)
2. Best way to attach it to the mast and back guying the mast.
3. Traveling pulley sizes, sources
4. How does the antenna get pulled up? By the guy on the tower, Thru a
pulley with the line run down the tower thru the tower block and then to the
ground crew?
5. Best way to attach and use taglines.
6. Anything else that would help.
I'm gathering the things needed this weekend and into next week so I need to
move fast in order to have everything I need before the first antenna goes
up. With the weight and size of the C3E I don't expect any problems with
getting it on the tower but this will help me prepare for getting the 40-2CD
up, which I know is not big compared to some antennas, but it is the biggest
antenna that I have dealt with. Thanks for your help in advance.
Jack W4NF Manassas, VA
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