[TowerTalk] Old Top Ten Devices Relay Switch Box

[kj6y (null)]

Check MFJ. They make a switch control that can be set up to work with switch. I don’t have the model and not near home to check 

Skip, KJ6Y.
Communications Service Co
Sent from my IPhone

> On Sep 22, 2022, at 4:53 PM, Ken K6MR <k6mr at outlook.com> wrote:
> 
> Except that TTD usually put back EMF diodes on the relay coils.  I know the A-B switch boxes have them. I'd bet the 6 switch does also.
> 
> Ken K6MR
> ________________________________
> From: TowerTalk <towertalk-bounces at contesting.com> on behalf of Al Kozakiewicz <akozak at hourglass.com>
> Sent: Thursday, September 22, 2022 1:45:03 PM
> To: towertalk at contesting.com <towertalk at contesting.com>
> Subject: Re: [TowerTalk] Old Top Ten Devices Relay Switch Box
> 
> DX Engineering now owns TTD.
> 
> If they are just relays, the polarity doesn't matter. Whether you common +12V and ground to select or ground the common and apply +12V to select doesn't matter.
> 
> Al
> AB2ZY
> 
> -----Original Message-----
> From: TowerTalk <towertalk-bounces at contesting.com> On Behalf Of Ed Goss
> Sent: Thursday, September 22, 2022 4:39 PM
> To: towertalk at contesting.com
> Subject: [TowerTalk] Old Top Ten Devices Relay Switch Box
> 
> HI Folks,
> 
>      I have a couple of old Top Ten Devices relay boxes; no model number or id is visible on the box. They allow for switching up to 6 different antennas. I do not have, and cannot find any information on the control heads for these relay boxes.  Markings on the relay box indicate that +12 volts is common, with the desired relay switched by applying negative/ground.  This is opposite of all the other relay boxes I have used (Ameritron, DXE) where you apply +12 volts to select the desired relay.
> 
>     Does anyone know of a control head that would work with these old relay boxes?  Thanks...
> 
> --Ed, N3CW--
> 
> 
> 
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