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  #1 (permalink)  
Old 01-28-2018, 11:22 AM
   
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Default Federal Signal Informer - Night Mode

Hi all,

Long time reader, first time poster.

Comms tech by trade but first time installing a fire station alert system. System is up and running and works as required, however I wanted to obtain advice on installing a switch for the dorm room speakers for night hours.

It runs through a 70v system and obviously if I just install a switch it will mute all traffic and tones. What is the typical circuit for this?

First thing that came to mind is an audio relay from one of the outputs?
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Old 01-28-2018, 3:54 PM
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This is a common (almost universal?) practice, so I wouldn't be surprised if the capability is already part of the Federal alerting device. If the receiver / decoder has selectable outputs bulit-in, just use the decoded audio at night and the normal monitor audio during the day.

If the above isn't an option, probably the easiest way is to use the tone-activated audio for the night hours and the normal receiver audio for the working hours. Seems like a common DPST or DPDT switch could select one audio pair or the other to be routed to the amplifier input.

There should be no need to fool with the 70v line... you should be able to do this by working only with the inputs.

John AC4JK
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Old 01-28-2018, 7:57 PM
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Assuming you are using one of the Informers with the audio / relay option use monitor button on the Informer to control the audio output which provides the day / night function ( with proper programming of the Informer).

As Chief 21 mentioned you can also feed the audio from another radio through one of the relay contacts on the Informer to the amplifier and parallel the relay contact with a spst switch to provide a day / night switch.
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Last edited by NC4AB; 01-28-2018 at 7:58 PM.. Reason: Spelling
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Old 01-28-2018, 8:30 PM
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Tell us a little more about how it is all set up. Are you using a Federal Informer as your alerting RX, or something else? Last time i messed with Informers i think audio was able to be routed thru one set of the relay contacts, and the other set used to trip the lighting circuit.

In my setups i used one radio (CDM1250) as an alerting radio, piped thru the station, and a second CDM1250 as a Monitor radio to hear all traffic on the channel, also piped thru the station, separate circuit, so they can hear if adjacent houses are dispatched and they might be callled to provide coverage. The Monitor audio i provide a switch to turn its audio off in the dorms at night. Usually someplace like the captain's office.
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Old 02-14-2018, 6:34 AM
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cw212017 -

Did you get your question answered yet? I've been following this thread but haven't seen you respond. And you haven't allowed private messaging to your profile.
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Old 02-14-2018, 7:25 AM
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FYI he can't allow PM's, it is set by the system, after a set number of postings.
Since he has only posted 1 message and not returned since, it will likely take awhile
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cw212017 -

Did you get your question answered yet? I've been following this thread but haven't seen you respond. And you haven't allowed private messaging to your profile.
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Old 02-19-2018, 12:21 PM
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Anyone know of a source for software? My dealer has had my order for 3 months now, and I still don't have it.

I already have the cable and an old software version that no longer plays nice with modern computers.

This lack of support is pushing me to gradually switch to unications with amp chargers.
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Old 03-14-2018, 12:14 PM
   
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Apologies for lack of response - completely forgot about it!

I do like the idea of audio running through a relay - That may be the easiest option. The Informer is currently programmed in such a way that it must be on monitor for tones to trigger. Having it off monitor will not allow it to go off.

I may need to look at programming it again - Can anyone advise?
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Old 03-14-2018, 6:12 PM
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Hmmm, been ages since i've been in the software. That being said, it wasn't very sensible in my opinion, either.

Yeah, having to be in Monitor for it to alert is kinda weird, too. That should be corrected.
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Old 03-15-2018, 8:05 PM
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The only way that I can think of that it would have to be on monitor to decode is that the wrong CTCSS/ DCS receive tone was programmed.
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Old 08-07-2018, 11:35 AM
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If I remember right another company called mabis i believe made something similar. However for the money I'm of the mindset a minitor 3 or older mobile with quick call is the way to go.
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