Newbie Question

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Hello all. I'm am just now getting my feet wet with terminology and basics of scanning. My question is how do I determine whether a particular county or agency is using an analog or digital signal? I've looked at the database and I'm a bit lost how to make that determination. Thank you in advance!!
 

fxdscon

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Hello all. I'm am just now getting my feet wet with terminology and basics of scanning. My question is how do I determine whether a particular county or agency is using an analog or digital signal? I've looked at the database and I'm a bit lost how to make that determination. Thank you in advance!!
.
Hover your mouse over the "Mode" header in the database to see the key for the abbreviations...


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RaleighGuy

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I only see "FMN" or "FM" on the modes I see, unless I'm in the wrong database. Oregon is where I'm looking at...
Share where in Oregon you are and we will be happy to check and explain to you, but just telling us Oregon, well, that's a big state with many agencies/systems/counties all different.
 
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I go to "Browse All Data" and select Oregon, and I've been looking specifically at Klamath, Jackson, and Douglas counties in the south and south central regions.
 

wa8pyr

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Does anyone have any additional insight? Thank you very much.

It's possible that what you want to listen to might be on a trunked radio system.

Select your county of interest and go to the database page for the county. In the upper right are a series of links topped by "xxx County Trunked Systems." Click that link and it will take you to a list of trunked radio systems; check those for information on your local area (if any).

Just a quick glance shows me that Douglas County Public Safety is using a trunked system which cannot be "trunk-tracked", only monitored by scanning all the frequencies.

Best advice is to listen to the conventional frequencies first (for example, Klamath Sheriff on 155.535 MHz, etc). If you don't hear anything, then it's very likely they've moved to a trunked system.

If you're a complete newbie, I'd suggest reading the following tutorials:


 
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It's possible that what you want to listen to might be on a trunked radio system.

Select your county of interest and go to the database page for the county. In the upper right are a series of links topped by "xxx County Trunked Systems." Click that link and it will take you to a list of trunked radio systems; check those for information on your local area (if any).

Just a quick glance shows me that Douglas County Public Safety is using a trunked system which cannot be "trunk-tracked", only monitored by scanning all the frequencies.

Best advice is to listen to the conventional frequencies first (for example, Klamath Sheriff on 155.535 MHz, etc). If you don't hear anything, then it's very likely they've moved to a trunked system.

If you're a complete newbie, I'd suggest reading the following tutorials:


Thanks wa8pyr. Looking at the trunked systems, its pretty clear to me under the "System Voice" section whether its analog or digital. Looking at just the county frequencies (Klamath for example) I can click on a license and other info but for the life of me can't see if its analog or digital. I appreciate the wiki info as well. I read through as much as i could digest over the weekend, and can't believe the nuance to all of this. Thanks again.
 

wa8pyr

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Looking at just the county frequencies (Klamath for example) I can click on a license and other info but for the life of me can't see if its analog or digital.

This was explained in post #2 of this thread; check that one again. If there's a D in the mode column, it's digital.
 

JethrowJohnson

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AM = Amplitude Modulation (analog)
FM = Frequency Modulation (analog)
FMN = Narrowband Frequency Modulation (analog)
P25 = Project 25 (digital)
DMR = Digital Mobile Radio (digital)
NXDN = Next Generation Digital Network (digital)

A trailing lowercase e indicates partial encryption, and a trailing capital E indicates exclusive encryption.
Example: NXDNe = NXDN with most traffic encrypted
P25E = P25 with all traffic encrypted
 
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