PMT Ambulance Frequencies

[fjsteven]

Hello!

I am brand new here. I really hope this is the correct topic to write this thread. If not, I apologize, and Ill learn more as I go.

My wife recently started working for PMT ambulance.

I found 2 frequencies in the database:

PMT E - 150.83
PMT W - 152.99

But, according to my wife, the one listed as PMT E is the main dispatch channel, not the East side frequencies. (She can tell by listeneing)

Apparantly there is a 3rd frequency I need.

Does anyone know of any other frequencies they may be using?

 

[AZScanner]

Sometimes these things take some digging. I found some additional frequencies here: WPTT623 (R/M Management Co., Inc.) FCC Callsign Details

The ones with tower locations might prove useful to monitor. Please do update the thread with which one is the correct frequency and submit a correction for the database also once you figure it out. Since your wife knows which ones are which, she can provide some nice insider information for us.

Welcome to the group!

-AZ

 

[KB7MIB]

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I'm hearing what I *think* may be PMT Ambulance on the Ian Communications LTR Passport system, on the White Tanks Mtn site (453.000, 461.525, 461.625, 463.950). If anyone else is interested in giving it a listen, we may be able to confirm if it is PMT.

 

[KB7MIB]

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453.000 seems to be the primary frequency in use. I'm not sure that Passport systems can be trunk tracked properly, though. I only have them programmed in as conventional channels at the moment.

 

[rpgaun]

I have an additional VHF frequency of 153.005 with a PL of 110.9. It has quite a bit of traffic on it. I also have 159.870 & 160.140 but they are silent. I'm on the west side so I will add the White Tanks UHF frequencies and see what happens.

 

[KB7MIB]

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153.005 is supposed to be the input to the 160.140 Usery Pass repeater, according to the SWFD-10.
159.870 is supposed to be a White Tanks repeater, input unknown, in the SWFD-10.

 

[KB7MIB]

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I'm also on the Westside, in Peoria. And, I've got an unknown interference source on 153.005, so I'm unable to monitor it.

 

[cellphone]

I'm wondering if Inputs and Outputs are switched versus what is in the FCC licenses and the SWFD. I am hearing 153.005 PL 110.9 as a repeater output in the East valley. This might be PMT East as I am hearing calls with East Valley addresses. Try 152.990 in the West valley.

Here are some other freqs to try. These are also reported as being used by PMT.
150.830
155.160
156.045
159.870
159.990
160.140

If anyone can confirm activity and channel name/number, we can update the DB.

 

[tomfassett]

Great thread--I was just looking into PMT's radio ops a few days ago and planned to do more research on it.

So, while working on the computer tonight I have had the frequencies mentioned above programmed into one of my older scanners. There seems to be 3 of the frequencies that have normal operations traffic. The UHF channels mentioned seem to be code transmitters and I have yet to hear any voice traffic on any of them. The VHF channels are all definitely ambulance dispatch and use the same basic verbiage as Southwest Ambulance, which I listen to often.
A number of broadcasts listed unit numbers as well as destinations which may help pin down the region covered for each channel.

Here is a quick synopsis:

150.830
The least busy.
Ident tones on the hour.
One transmission was from (ambulance) unit 515 heading to Good Samaritan Phoenix.
The only other transmissions were units signing on for their shift.



152.990
The busiest channel.
(Ambulance) units identified:
323
390
398
415
422
432
495
515
582
882
893
4803

Destinations:
Phoenix St. Luke's hospital
Arizona Veterans Home
Thunderbird Hospital
Phoenix Good Samaritan
51st Ave. and McDowell

One transmission was the dispatcher telling a unit to switch their traffic to "East" as they were too far away for them to hear clearly. That unit showed up on 153.005 about 30 seconds later.


153.005
Moderately busy.
(Ambulance) units identified:
315
321
425
511

Destinations:
Chandler Regional
Station 1

So far, it would appear that 152.990 is west valley and 153.005 is east valley. I haven't heard enough on 150.830 to figure that one out yet.

I'll keep listening as time permits.

Tom F

 

[rpgaun]

I have had the UHF frequencies programed in for a week now. I have only heard transmissions on the 453.000 which seems to be informal chit chat like you would hear on GMRS. Only using first names no unit of agency IDs.

 

[tomfassett]

I listenned for about 4 hours the other night and only heard one "official" sounding transmission on the UHF frequencies. It was PMT as it was a unit I had heard on the East channel--they were signing off. All other transmissions on the UHF frequencies I heard were strickly data.
I had a real problem scanning the PMT VHF channels while I was in the car. Southwest Ambulance comes in clear as a bell but PMT breaks up a lot. I can even get clear transmissions from SWA when I am on the freeway halfway between Phoenix and Tucson. PMT starts cutting out past Sun Lakes. I assume from this that SWA has a better repeater system in the southeast valley.

Tom F

 

[tomfassett]

The biggest problem I am having in listenning to the PMT broadcasts is the East repeater seems to stay on long after they have stopped talking--anywhere from 1-3 minutes. I finally had to lock out the frequency to keep my scanner from stopping on it every time it cycled through.

Tom F

 

[KB7MIB]

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So it looks as if:
150.830 is Dispatch and/or Fleet Management
152.990 is West Ops
153.005 is East Ops
UHF may be a backup. I believe when I heard it active, they were having issues with East. (I've also heard a broken down Valley Metro bus using it.)

 

[KB7MIB]

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I think 159.870 is the input to West 152.990, I just caught a transmission from an ambulance on it, and the reply came back on West from the dispatcher.

 

[KB7MIB]

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Rescue 286 has been heard on 453.000 in the past several minutes, enroute to the hospital. Also some random chit-chat that may or may not be PMT-related.

 

[KB7MIB]

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I think I just heard 193 clear on 453.000. That's all that was said, "193 is clear."

 

[tomfassett]

All I hear on 453.000 is a constant "squelch tail" every 3 seconds (like a repeater is kicking in and out) with a little voice (very quiet and short) once in a while (and I only hear the voice if the squelch is turned WAY down). Perhaps it is a West Valley reapeater since you guys on the west can hear it way better than I can in the Southeast Valley.

Where's fjsteven? His wife could check the unit numbers and see which ones are assigned where... ;- )

Tom F

 

[tomfassett]

There is definitely dispatch info on 453.000, but it is almost impossible to hear where I am.
I just heard:
"376 arriving" From a unit.
"390, what's your ETA?" From the dispatcher

I had the other scanner monitoring the East and West VHF channels and this was not a patch from either of them as nothing was heard on the other scanner.

Tom F

 

[KB7MIB]

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453.000 is part of an LTR Passport trunked radio system, that uses those "blips" instead of a control channel to steer radios to the right frequency. I don't believe any current scanner can "trunk-track" those systems, although using the proper computer..

 

[KB7MIB]

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...software to control a scanner via your computer may allow you to do so. You'd have to look into that, however. The squelch breaks on my PRO-43, but not on my PSR-500 when monitoring 453.000.