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Re: [TowerTalk] Prosistel rotor connectors source in USA

To: towertalk@contesting.com
Subject: Re: [TowerTalk] Prosistel rotor connectors source in USA
From: Jim Brown <jim@audiosystemsgroup.com>
Reply-to: jim@audiosystemsgroup.com
Date: Sat, 22 Mar 2025 19:12:24 -0700
List-post: <mailto:towertalk@contesting.com>
On 3/22/2025 6:43 PM, john@kk9a.com wrote:
Prosistel recommends Cat7E for the motor conductors?  Cat7E uses 23 or 22
awg copper wires.  I am not familiar with Prosistel rotators and I don't
know the motor's voltage or amperage.  22awg wire has 1.6 ohms resistance
per 100 feet so the voltage drop at the motor could be significant.

Mass market options for multi-conductor cable are pretty limited. I used two runs of Romex for most of the 350 ft run to the top of my tower for a Yaesu rotator. I found a suitable cable for the 3-el SteppIR from a ham whose wife ran a biz manufacturing and distributing specialized audio cables, most of which need twisted pairs. You may know him -- Bill Steffey, NY9H, was a mfr's rep for a lot of top audio lines, and also worked in broadcasting in Chicago 20-30 years ago.

73, Jim K9YC

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