[TowerTalk] Prosistel rotor connectors source in USA

[Gary K9GS]

For splicing two different size wires together, or multiple wires paralleled to a larger gauge wire, visit your local marine supplier and look for " step down butt splices ".They come in many sizes and configurations and are even available with heat shrink tubing and or adhesive. They are designed to be weatherproof and in a high vibration environment. Just be sure you properly crimp them.73,Gary K9GS
-------- Original message --------From: Herschel Hall <r2owner at gmail.com> Date: 3/24/25  10:15 AM  (GMT-05:00) To: Jorge Diez - CX6VM <cx6vm.jorge at gmail.com> Cc: jim at audiosystemsgroup.com, towertalk at contesting.com Subject: Re: [TowerTalk] Prosistel rotor connectors source in USA For he 220’ run to my Tic Ring I use 7 conductor 18 ga copper undergroundsprinkler wire I bought at Menards. 2 pairs for the 2 motors & 3 for thepot. Runs to base of tower & then stranded 18 ga up the tower. Tower is aHDX-555, so need strand going up.73 HerschelWA9KIAOn Mon, Mar 24, 2025 at 7:41 AM Jorge Diez - CX6VM <cx6vm.jorge at gmail.com>wrote:> Hi Jim>> my cable runs are 650 fts the longest, 300 fts the other two runs>> I was using 2.00 mm2 and 1.5 mm2 with no problem>> 73,> Jorge>> El lun, 24 mar 2025 a las 2:21, Jim Brown (<jim at audiosystemsgroup.com>)> escribió:>> > On 3/23/2025 5:30 PM, Jorge Diez (CX6VM-CW5W) wrote:> > > Manual says to use no less than 0.75 mm2 wires. Don’t talk about the> > length> >> > In the Yaesu rotators I use, big copper is needed only to run the motor;> > position is sensed by the position of a potentiometer (variable> > resistor) physically linked to the rotating side, so small copper works> > just fine.> >> > I'm looking at the user manual for the PST-61 and two other models, and> > it does the same thing. Wires 1 and 2 drive the 12VDC motor, wires 3, 4,> > and 5 are connected to the potentiometer. They specify 1 sq mm for the> > motor, 0.5 sq mm for the other three. Those numbers seem to be based on> > current-carrying capacity, not allowable IR drop.> >> > Obviously incomplete information if you're buying cable for a long run.> >> > A question for you, Jorge. How long is your rotator cable? If it's> > short, you only need to double up the wires on the motor, so that's one> > pair for each wire. You've got two pairs (4 wires) left for the pot, and> > only need three.> >> > A trick I've used when trying to fit stranded wire into a contact that> > is too small for it is to simply remove enough strands right at the> > connector to make it fit. For you doubling up conductors, strip them a> > bit long, cut one shorter than the other, solder it to the longer one,> > and solder that longer one to the connector, using short pieces of heat> > shrink to insulate the bare wires as needed.> >> > 73, Jim K9YC> >> >> >> >>> --> 73,> Jorge> CX6VM/CW5W> _______________________________________________>>>> _______________________________________________> TowerTalk mailing list> TowerTalk at contesting.com> http://lists.contesting.com/mailman/listinfo/towertalk>______________________________________________________________________________________________TowerTalk mailing listTowerTalk at contesting.comhttp://lists.contesting.com/mailman/listinfo/towertalk