In station alert using a minitor

[wildbillx]

I am looking for a long beep or a tone to come across the fire department speakers when we get toned out. We use 2 tone with dtmf for siren activation. I do have a couple Minitor IV's/ Minitor V's and chargers. No amp chargers. I do have a base radio hooked up using speaker wire to 3 speakers with volume control in each room. this works good.
I figured out a way to use a Minitor IV charger with a 3/32" plugged into the external speaker plug to a speaker. But it only does the "beep, beep, beep" would like the pager to activate a long tone over the speakers. I know I will need parts that include a relay but this is where I get lost or start seeing parts for a lot of money.
I have been searching on the internet for a while on this topic and found a couple things. First I want to build or make this for under $25, second I have found the systems on ebay, and no Im not going to spend over $25. WIth that out of the way. I hope someone has some insight. Thanks

 

[SteveC0625]

The Minitor V's can be programmed to do a long single tone instead of the standard beeps. Cost = $0.00

 

[wildbillx]

Thanks, but now my problems are how to hook it up. The 3/32" external plug is on the bottom. I might be able to drill a hole in the charger to access it. Will let you know what I come up with.

 

[fineshot1]

I could be wrong but i thought there was a base unit to plug the
pager into that gives you relay outputs when the paging tones
are received.

 

[wildbillx]

You are correct, there is an amp/charger with a DIN on the back but, that costs more than I want to spend.
I have now made one of the old Minitor III chargers into what I think is what I am looking for. I have added another pin to the bottom " the one that is labeled alert out" which I think is the low voltage activation. I will be checking it tonight at the night test. If it does work, then I will wire a relay that trips with the low voltage. That relay will be connected to ie. bell, or buzzer. Hopefully this works as I am not an electric engineer, just a radio guy. Any input would be great. Thanks again.