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Remote control over POTS line?

Posted: Sat Mar 01, 2014 7:56 pm
by Dogwelder
I am tinkering with a project and I was wondering if anybody could provide some insight.

I have a Kenwood repeater hooked up to a Moto tone remote adapter and an MC1000 remote. I have it staged up locally so that I can transmit, receive, and disable repeat mode all through the MC1000.

I would eventually like to install the repeater in a remote location and control it via a POTS line. Is there a product on the market that would allow me to do this? This isn't meant for constant control and monitoring, but instead to allow me to dial up and enable/disable if something should go wrong.

Re: Remote control over POTS line?

Posted: Sun Mar 02, 2014 6:05 am
by Bill_G
Most people do this over the air with dtmf. But, to answer your question - here's a kit for a four relay switcher with auto-answer. Use this to pass your tone control commands to your repeater, or use the box's inherent dtmf decode. Hope that helps.

Re: Remote control over POTS line?

Posted: Sun Mar 02, 2014 7:46 am
by Dogwelder
Thanks for the reply....that's almost what I'm looking for. While I could still use this to enable/disable, I still would like to be able to dial in and talk over the air with my deskset. I would need something that answers and holds the line open for me, interfacing directly into the tone remote adapter.

I'm aware of doing this with DTMF, but I wanted something a little more secure....and fancier.

Re: Remote control over POTS line?

Posted: Sun Mar 02, 2014 7:49 am
by Bill_G
It's a bucket of relays. What you do with the relays is your project. If you want them to pass line audio to the radio, make it happen.

Re: Remote control over POTS line?

Posted: Sun Mar 02, 2014 8:03 am
by Dogwelder
It sounds to me like I would just bypass the relays at that point and install a splitter....I guess that hadn't occurred to me. Shouldn't I be concerned with voltages on the line since it is POTS as opposed to a dry pair?

Re: Remote control over POTS line?

Posted: Sun Mar 02, 2014 8:10 am
by Bill_G
The tone remote adapter is used to it. It's built for telco world including ring battery and sealing current appearing on the leads.

Re: Remote control over POTS line?

Posted: Sun Mar 02, 2014 8:11 am
by Dogwelder
Thanks Bill!

Re: Remote control over POTS line?

Posted: Sun Mar 02, 2014 8:11 am
by Bill_G
My pleasure.