Brian,
I too lack enthusiasm for tower climbing. Maybe I have been lucky but on my
shunt fed tower, I have three ham IV rotors, one for the C31XR, One for the
C4 and one for the XM-240, the latter two turn gates to which those antennas
are attached. I put 1500 Watts or so into that tower all the time and have
never noticed any UNEXPECTED behavior on any of those rotors in the 4 years
I have been feeding the tower. All of these HAM IV's have been modified
with the brake delay and the heavy duty brake from ROTOR DOC. C 31 has been
up there 9 years now and the XM-240 For 7. I saw your post asking how heavy
of a rotor you need. The ham IV's have never blinked. I am 7 miles off the
water here in VA and the top two came thru hurricane Ophelia which was at
105 kts when it went thru here. Depending on where you are, ice loading in
new England etc might require a heavier rotor than what I have. I do have 2
spares ready to go but they are still in the box they came back in when
those were modified.
I don't have any experience with the yaesu' rotors
Press on regardless
73
Chet N4FX
-----Original Message-----
From: topband-bounces@contesting.com [mailto:topband-bounces@contesting.com]
On Behalf Of Brian Machesney
Sent: Tuesday, July 13, 2010 2:11 PM
To: topband@contesting.com
Subject: Topband: Dealing with the rotor on a driven tower
I spoke with Yaesu on this question and received the answer that the rotor
must be insulated from any surface that carries RF to prevent "unexpected
behavior" and/or damage to the rotor and/or control box.
I'd like to know if there are simpler solutions that readers of the
reflector have used successfully. I just put up my tower single-handed a
year ago (that was a lot of work for a first-timer) and I'm not feeling all
that ready to go back up and start messing with it.
--
73 -- Brian -- K1LI
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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UR RST IS ... ... ..9 QSB QSB - hw? BK
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