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Arizona Radio Discussion Forum Forum for discussing Radio Information in the State of Arizona.

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Old 05-27-2006, 2:12 PM
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Default Az Dps

Does anyone have a current list of DPS frequencies for Arizona? Predominantly interested in the Phoenix area, plus air frequencies. I'm in Chandler if that helps...

Also is it safe to assume that their air frequencies are AM? (And if anyone cares to explain just why most air freqs utilize AM - I'd be interested in reading it).
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Old 05-27-2006, 3:39 PM
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From the database: http://radioreference.com/modules.php?name=RR&aid=126

I'm not aware of the air frequencies used, nor am I aware of why they are on AM, sure somebody else does though.
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Old 05-27-2006, 4:43 PM
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Yep, those I have - I've seen reference to others however; like -

AZ DPS 154.86000 FM 0.0 D
AZ DPS 154.90500 FM 0.0 D
AZ DPS 154.93500 FM 0.0 D
AZ DPS 155.44500 FM 0.0 D
AZ DPS 155.49000 FM 0.0 D
AZ DPS 155.68500 FM 0.0 D
AZ DPS 155.83500 FM 0.0 D
AZ DPS 155.85000 FM 0.0 D
AZ DPS 155.86500 FM 0.0 D
AZ DPS 156.07500 FM 0.0 D
AZ DPS CID 156.09000 FM 0.0 D
AZ DPS 156.33000 FM 0.0 D
AZ DPS 156.51000 FM 0.0 D
AZ DPS 156.55000 FM 0.0 D
AZ DPS 156.60000 FM 0.0 D
AZ DPS 156.70000 FM 0.0 D
AZ DPS 156.95000 FM 0.0 D
AZ DPS 156.97500 FM 0.0 D
AZ DPS Air 154.78500 AM 0.0 D


Just curious if they were accurate (or even actively used).
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Old 05-27-2006, 5:54 PM
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Oh, other than the ones that I gave and you just listed, I am not aware of any others. And I am not really sure how accurate those are, never tested to see.
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Old 05-28-2006, 1:30 AM
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I'll go with those listed here - haven't seen any activity on the others.

Should be a good weekend for them
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Old 05-28-2006, 1:52 AM
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Quote:
Originally Posted by InlandAZ
Yep, those I have - I've seen reference to others however; like -

AZ DPS 154.86000 FM 0.0 D
AZ DPS 154.90500 FM 0.0 D


Just curious if they were accurate (or even actively used).

The first one is listed as AZ Dept of Agriculture and the second is listed as Dept of Corrections.

See my Sig for a very good reference for AZ info and freqs.

With the help of the other AZ members hopefully soon we can get more info in the DB here at RR.
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Old 05-28-2006, 1:58 AM
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Quote:
Originally Posted by InlandAZ
Does anyone have a current list of DPS frequencies for Arizona? Predominantly interested in the Phoenix area, plus air frequencies. I'm in Chandler if that helps...

Also is it safe to assume that their air frequencies are AM? (And if anyone cares to explain just why most air freqs utilize AM - I'd be interested in reading it).

Aero frequencies are in the AM mode for interference reasons. When two stations transmit using AM they can both be heard at the same time to receiving stations (IE. other aircraft/ATC) This wouldn't be the case with FM which takes up quite a bit of the band. When someone transmits with FM it would basically cover the entire frequency and no one else would be heard. So for safety reasons they use the AM mode in case someone keys up on top of another transmitting station.

An example: You have N56JLK at Airport 1 on 122.800 unicom and 35 miles N9846L at Airport 2 on 122.800 unicom. Both aircraft are 35 miles away from eachother but at an altitude of 1000 feet if they're both reporting maneuvers or intentions at the same time, to other pilots they would block eachother out if the radios transmitted using FM. With AM you'll still hear both aircraft's transmissions. There will be a whine but you'll still be able to make it out.

Last edited by nexus; 05-28-2006 at 2:02 AM..
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Old 05-28-2006, 3:12 AM
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Besides the 3 Phoenix Metro DPS Freqs, is there any of the CID freqs or any others that broadcast statewide or local messages about crimes that have occurred?

Jason
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Old 05-28-2006, 1:49 PM
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Thanks for the responses guys - I've always wondered about Aero transmissions, and now I know.

I've been tempted to purchase a copy of the SWFD - I'm an old Police Call guy, and the price tag seemed a bit much, but it looks like I'll have to break down and order one.
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Old 05-28-2006, 2:29 PM
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Quote:
Originally Posted by InlandAZ
Thanks for the responses guys - I've always wondered about Aero transmissions, and now I know.

I've been tempted to purchase a copy of the SWFD - I'm an old Police Call guy, and the price tag seemed a bit much, but it looks like I'll have to break down and order one.
Oh ya, its worth it.
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Old 05-28-2006, 3:10 PM
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Quote:
Originally Posted by InlandAZ
I've been tempted to purchase a copy of the SWFD - I'm an old Police Call guy, and the price tag seemed a bit much, but it looks like I'll have to break down and order one.

You get what you pay for. Since I have moved to AZ I have not missed an edition.
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