[GreenKeys] Seeking patch panel with loop supply

[Harold Hallikainen]

I have thought about making something like this using the 15290 supply (
https://w6iwi.org/rtty/#:~:text=Loop%20Supplies-,152950%20150ma%20%2420.00,-%2D%20This%20is%20the
). I'm thinking along the lines of a bunch of 1/4 inch TRS shorting jacks
on the front panel. There would also be an AC outlet that would become
live on any loop activity and stay hot for 30 to 60 seconds after the last
loop activity.

It sounds like you may also be looking for some sort of loop repeater
where one loop  could key another. Is that the case? I'd be tempted to
make something like that as an independent box with a couple TRS plugs,
one plugged into the originating loop, and the other plugged into the loop
to be keyed.

Harold
https://w6iwi.org


On Mon, September 23, 2024 3:34 pm, Anthony Watson via GreenKeys wrote:
> Does anyone know if patch panels with loop current are still around or are
> they unobtainium??? Or, maybe  a modern-ish-component schematic exists to
> make one?
>
> Would like to take a signal from my one loop source and propagate it to
> multiple machines - not enough juice in the one supply I have to power a
> useful daisy chain loop. Hence a patch panel that powers itself might be
> just the ticket.
>
> At least trying to boost the Rx loop, the KSR selectors, reperf selectors,
> and motor shutoff control are just too hungry all at once.
>
> I made a switch box and employed some VRs to conserve the loop power I
> have to go around and manually isolate the loop to the machines I’m
> using  That got me to reliable copy, which that’s not terrible but also
> not great, and still not enough to be reliable. The motor control seems to
> need a bit more than I got to trigger the relay.
>
> Anthony
> WB7PZZ
> WatsonAC at aol.com
> Sent from my iPhone
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