[TowerTalk] Old Top Ten Devices Relay Switch Box

[Les Kalmus]

Ed,

If you are referring to the antenna relay box that is a diecast box with 
six antenna ports and no markings except for a paper strip that labels 
the ports I have the same one and had the same issue.

What I did was to reverse the diode for each relay on the PC board which 
allowed me to apply +12V DC for the desired relay.

I have the original manual which I will be happy to copy you on if you 
wish. I think I still have the modified relay box as well.

Les W2LK



On 9/22/2022 16:39, Ed Goss wrote:
> 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--
>
>
>