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Re: [TenTec] More help needed on Shure 450

To: tentec@contesting.com
Subject: Re: [TenTec] More help needed on Shure 450
From: "Dr. Gerald N. Johnson" <geraldj@storm.weather.net>
Reply-to: geraldj@storm.weather.net,Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Sun, 02 Jul 2006 10:34:08 -0500
List-post: <mailto:tentec@contesting.com>
On Sun, 2006-07-02 at 10:00 -0400, OTAKEBI@aol.com wrote:
> Thanks to all who replied.
> I found information on Shure web site but need more information.
> Seems from what I can get from the web site that the color code is as  
> follows:
> White = mic
> Green = ground    
> Shield = should go to same pin on OMNI V as green wire.
> This leaves two wires:
> Red and Black.
> Shure says that the Red and Black wires control an external  relay.
> Seems they are to activate the OMNI V relay and one of them should go to  pin 
> #3 on the OMNI V.
> Question is which one?

It doesn't matter which one, so long as the other goes to ground. The
switch is floating so it can be wired for more applications. Though I'm
fairly sure the radio needs a ground on PTT to transmit, so hook red to
PTT and black to ground or the other way around. Either will work.

> So, from what I can tell here is the way plug to OMNI V should be  wired.
> White = mic to pin #1
> Green and Shield = to pin #2
> But which one, Red or Black should I connect to PTT or pin #3 on the OMNI  V? 
> I may be over looking something on the web page but I do not see an  
> explanation of which wire to connect for relay trip.
> Or, when to use one over the other.
> Thanks as always,
> Dan/N4VET
> _______
73, Jerry, K0CQ,
All content copyright Dr. Gerald N. Johnson, electrical engineer

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