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Re: [TowerTalk] HamIV Rotor sluggish

To: towertalk@contesting.com
Subject: Re: [TowerTalk] HamIV Rotor sluggish
From: Brian Alsop <alsopb@nc.rr.com>
Date: Sun, 13 Jan 2013 14:47:12 +0000
List-post: <towertalk@contesting.com">mailto:towertalk@contesting.com>
Came late to this thread.
Running slow, baring mechanical binding usually is caused by defective motor capacitor in control box. Replacing it does wonders.

73 de Brian/K3KO

On 1/13/2013 14:40, Bryan Swadener wrote:
Hi Doug,

Before you do anything, what is the wire resistance? The manual says the 
maximum interconnect cable resistance is...

Terminals 1 & 2 = 0.8 ohm
Terminals 3, 4, 5, 6, 7, and 8 = 2.0 ohms

According to a nifty calculator spreadsheet 
(http://www.rst-engr.com/rst/jimsdata/wirecalc.xls), to stay under those limits 
at 275 feet, you should be using at least 14 AWG (0.696 ohms) and 20 AWG (1.759 
ohms) wire respectively. If you're already there, look elsewhere. Several of 
the othe suggestions sound good.

vy 73,
Bryan WA7PRC


Date: Sat, 12 Jan 2013
From: Doug N4IJ
Subject: [TowerTalk] HamIV Rotor sluggish

The rotor is on a tower and the run is about 275 ft from the shack.
What is the best way to get more response from it? At times I have to
rock the antenaa back and forth to get it to even move. I am sure it
must be voltage loss.  Boost the voltage from the controller?
Doug, N4IJ
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