Batboard

Tone sequence is .7 seconds of 2800 Hz followed by 6 seconds of 2610 Hz. Does anyone have any idea what paging format this is? I don't think it's Motorola, GE, or Plectron, at least as far as I can tell. It's really high frequency for audio via radio...just wondering if anyone else has run into something like this. Any idea what it is or where it came from? Thanks in advance.

Andy

Is it for fire alerting, civil defense sirens, or something else? Could it be for Knox boxes?

It's fire alerting. The department in question uses Kenwood portables for paging.

Andy

How about "Reach" format?
page 3 of http://www.midians.com/pdf/tone_signaling.pdf has 2799 and 2612 Hz tones.

aaknitt wrote:Tone sequence is .7 seconds of 2800 Hz followed by 6 seconds of 2610 Hz. Does anyone have any idea what paging format this is?

Sounds like your basic tone remote. Is the 2800 louder than the 2610, or vice-versa?

RFguy wrote:How about "Reach" format?
page 3 of http://www.midians.com/pdf/tone_signaling.pdf has 2799 and 2612 Hz tones.

That could be, although the timing doesn't align with what's shown in the table. Thanks for the tip...I was looking at the chart on their website and that chart doesn't show the long tone tones like the PDF does.

Wowbagger wrote:Sounds like your basic tone remote. Is the 2800 louder than the 2610, or vice-versa?

I was kind of thinking the same thing, but why would one use a tone remote for paging over the air? The 2610 is slightly louder than the 2800 (I'd need to recapture them to determine exactly how much louder). They're both pretty low compared to most two-tone sequences, presumably because they're getting rolled off in the audio stages of the radios?

At this point I'm thinking it's some kind of permutation of the Reach format.

Andy