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Old 05-12-2018, 4:57 PM
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Default IAN Communications LTR Passport system

I believe that this system no longer exists. It used to be used by PMT Ambulance several years ago.

If a couple of us can monitor the system frequencies, we can have the system deprecated if it is indeed gone, or otherwise modified if it is using DMR, NXDN or some other mode now.

https://www.radioreference.com/apps/db/?sid=4975

John
Peoria
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Old 05-13-2018, 10:21 AM
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Thank you.

I have been slowly trying to go through some of the TRS systems to determine if they are deprecated. Some clearly are and I have been changing the setting.

You are able to see a deprecated TRS, just in case one goes away that shouldn't . It is still visible on RR.
https://www.radioreference.com/apps/...opt=deprecated
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Old 05-13-2018, 10:32 AM
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I've been listening to 453.000, which was PMT's home channel on the White Tank Mtn's site of the system, and have heard nothing in 12+ hours.

PMT's old VHF frequencies, 150.8300/152.9900/153.0050 have similarly been silent.

John
Peoria
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Old 05-13-2018, 11:57 AM
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I don't know if it's DMR or NXDN, but there is some kind of sporadic digital transmission on 453.000.

Can someone else decode it?

John
Peoria
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Old 05-15-2018, 5:19 PM
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452.2375 and 452.7375 have continuous transmissions on them. Control channels for DMR or NXDN perhaps?
Both frequencies were a part of IAN's Shaw Butte site.

462.500 sounds like an analog FM stand alone repeater, with a 71.9 Hz tone. The users sound like they're loading sand into a dump truck. (Again, this is a former Shaw Butte site frequency.)

John
Peoria

Last edited by KB7MIB; 05-15-2018 at 5:39 PM.. Reason: Reformatting and additional information
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