[TowerTalk] Ham IV rotor
WW5L at gte.net
Mon Aug 30 12:10:41 EDT 2004
Fellow Tower Talkians:
I've got a Ham IV (1987 vintage that has been overhauled three years ago
by Norm's Rotor Service). But I still seem to have problems with it
such as wild meter swings, etc.
A few months ago I completely replaced the rotor cable with one that has
2 16 ga and six 18 gage wires in about a 75 foot total run. Now it
seems to be on the fritz again. Can't get any readings from the rotor
itself at the control box, per using the Telrex/Hygain manual. SHould I
step up to a higher gauge wire, which would probably be overkill at such
as short distance of 75 ft. total. The cable is attached to my Tri-Ex
50 foot crankup by 3 standoffs bought with the tower.
The connectors on both ends are 8 plug trailer disconnects from Wireman
and are each wrapped first in heat shrink tubing, then Scotchcoted, then
wrapped in Scotch 33 tape and Scotchcoated again, and finally in a
piece of sticky butyl rubber made for weatherproofing large outdoor
connectors, and this is Scotchcoated again. I don't think moisture is
the problem, just can't seem to isolate what is the problem though.
The system is wired so I can take the rotor control box direct to the
rotor and plug it into the rotor pigtail I ran from the 8 screw terminal
board to the trailer disconnect.
May have to pull the whole thing down and start over as far as cabling
is concerned, However, I will crank the tower down and take the rotor
box to the rotor and connect them directly to see if the problem is
somewhere in the 75 foot run of rotor cable.
Any suggestions gladly accepted.
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