Federal NAC's

[ecps92]

You must mean Analog not FM, since P25 is FM

Also as a reminder some Scanners do require you to enter the Freq as either P25 [Digital] or Analog [FM] as they do not auto-detect the two different modes.

Don't limit yourself to FM. A lot of fed stuff (at least around here) is P25. Also, some might be P25 today and FM tomorrow and switch from time to time (true of FBI around the DC area). I've heard the morning shift as P25 then the evening shift (on the same detail watching the same guy) be FM.

Sent from my ADR6400L using Tapatalk

 

[mike_s104]

You must mean Analog not FM, since P25 is FM

Also as a reminder some Scanners do require you to enter the Freq as either P25 [Digital] or Analog [FM] as they do not auto-detect the two different modes.

Yes, that's exactly what I meant.
Thanks for the correction.

One thing I do is if I think it might be analog and digital, I will program the freq in twice. Set one for PL search and one for NAC search.

I've noticed on my 396XT with faint signals, it has trouble decoding a digital transmission at first if its set to auto. Setting it to digital has a quicker decode and you catch more audio.
Sent from my ADR6400L using Tapatalk

 

[ecps92]

Thats one reason I do love my GRE600, altho plagued with some High RF issues, the One Entry is all that is needed vs my XT which requires to entries, but has the nice feature of Logging the P25 Radio ID's

Yes, that's exactly what I meant.
Thanks for the correction.

One thing I do is if I think it might be analog and digital, I will program the freq in twice. Set one for PL search and one for NAC search.

I've noticed on my 396XT with faint signals, it has trouble decoding a digital transmission at first if its set to auto. Setting it to digital has a quicker decode and you catch more audio.
Sent from my ADR6400L using Tapatalk

 

[eduhat]

I have a psr500 and i do my searches in auto mode to try and catch everything, but im new to these digital scanners. Im used to a good ole pro2052

I use the search object type and set my mode to auto, set frequency limits and let it run. Problem is i have locked into frequency in Am mode which i think should be Fm from the sounds of the signal. It sounds digital.

 

[ecps92]

You might find some FM that locks in as AM from time-time, also Cable TV leakage can do that as well. I run my 600 the same way

P25 is a decent signal should not go to am mode [ymmv]

I have a psr500 and i do my searches in auto mode to try and catch everything, but im new to these digital scanners. Im used to a good ole pro2052

I use the search object type and set my mode to auto, set frequency limits and let it run. Problem is i have locked into frequency in Am mode which i think should be Fm from the sounds of the signal. It sounds digital.

 

[darkwolf]

ref: nac

i hear anlot about this nac stuff although when i try too put that into arc96 or win96 there is no place to add this so could some try too explain this to me

 

[KE4ZNR]

i hear anlot about this nac stuff although when i try too put that into arc96 or win96 there is no place to add this so could some try too explain this to me

That would be because while the Pro96 can decode digital voice audio it does
not allow for decoding of NACs. Really only the latest generation of digital scanners
allow for NAC Decoding and filtering.
List of scanners that can decode NACs:
http://wiki.radioreference.com/index.php/NAC
Wish I had better news for you
Marshall KE4ZNR

 

[Ensnared]

Federal: Auto Mode & Squelch Search

I have a psr500 and i do my searches in auto mode to try and catch everything, but im new to these digital scanners. Im used to a good ole pro2052

I use the search object type and set my mode to auto, set frequency limits and let it run. Problem is i have locked into frequency in Am mode which i think should be Fm from the sounds of the signal. It sounds digital.

When you load your federal frequencies in your PSR 500, how do you load them? I am not talking about the search function. I am referring to entering them in a scan list.

For instance, for DEA, would you list the common DEA channels: a) two sets, one being analog and another being digital, for the same frequencies; or b) do you load one set of frequencies with the Mode set to auto and squelch set to search?

I know how sneaky the Feds can be. I want the radio to find the active ones. But, if I load the RR DB NAC & CT tones, they might switch these. If I loaded auto mode and squelch search for all Federal frequencies, would I have a better chance of intercepting them?

Where I live, they are using very low power transmissions or blending into the local trunking system. My friend lives much closer to the federal building. He is hearing them on a frequent basis, but I am having trouble picking them up. I know about types of antenna, etc., but I am mainly talking about modes and squelch.

 

[signal500]

I program my GRE's by loading one set of frequencies with the Mode set to auto and squelch set to search. I don't miss a thing. For instance, on 166.4625 I have heard different agencies using this frequency. One had a PL of 100.0, another PL 167.9, another with NAC001, and another with NAC167.

 

[Ensnared]

Good Deal

I program my GRE's by loading one set of frequencies with the Mode set to auto and squelch set to search. I don't miss a thing. For instance, on 166.4625 I have heard different agencies using this frequency. One had a PL of 100.0, another PL 167.9, another with NAC001, and another with NAC167.

Well, I thought this would be a good plan, but don't recall many people using this method. So, I am going to forget the tones so that I won't miss anything. I will set mine to auto and search as well.

Yes, I noticed how various Federal agencies use the same frequencies. I've always heard that they don't have to submit applications to the FCC to make changes, but I don't know that to be fact. I do know they are rather elusive. Of course, this adds to the appeal, doesn't it?

Again, my friend tells me they are active here in town, but I can only hear static and scratchy reception. I believe they are using low power simplex, no repeaters.

When I lived in Houston, the DEA & Customs were quite active. The same can be said for Dallas.

Thanks.

 

[ChrisP]

Yes, I noticed how various Federal agencies use the same frequencies. I've always heard that they don't have to submit applications to the FCC to make changes, but I don't know that to be fact. I do know they are rather elusive. Of course, this adds to the appeal, doesn't it?

Not to get off the topic of this thread, but the FCC has no authority over federal frequency use. That all goes through different agencies, the NTIA and IRAC. There are licenses and call signs issued for federal users, but that data is no longer available for public consumption.

And despite what some people may believe, there are rules governing federal users and they can get into trouble for mis-using federal channels and non-compliance with the IRAC rules and allocations.

- Chris

 

[ecps92]

Same here in New England, One Entry at Auto

Example, I'll never miss traffic when I travel because
163.3125 is set to Auto
136.5 - TSA Logan milli-wave body scanner
$653 - Tampa FIO
$202 - USSS DC
$C02 - ICE in IL
$293 - VA in NW FLA

or
168.8375 [both right here in New England]
$002 - TSA Logan Milli-wave body Scanner
$293 - CBP Air 1

I program my GRE's by loading one set of frequencies with the Mode set to auto and squelch set to search. I don't miss a thing. For instance, on 166.4625 I have heard different agencies using this frequency. One had a PL of 100.0, another PL 167.9, another with NAC001, and another with NAC167.

 

[ecps92]

For the GRE Auto is the way to go.

Now if you talk Uniden, well, then you need to program One Analog, One Digital, One Analog, One Digital

Well, I thought this would be a good plan, but don't recall many people using this method. So, I am going to forget the tones so that I won't miss anything. I will set mine to auto and search as well.

Yes, I noticed how various Federal agencies use the same frequencies. I've always heard that they don't have to submit applications to the FCC to make changes, but I don't know that to be fact. I do know they are rather elusive. Of course, this adds to the appeal, doesn't it?

Again, my friend tells me they are active here in town, but I can only hear static and scratchy reception. I believe they are using low power simplex, no repeaters.

When I lived in Houston, the DEA & Customs were quite active. The same can be said for Dallas.

Thanks.

 

[Ensnared]

Auto Is A Go

At present, I am re-programming the DFW area. Initially, I had one scan list for Tarrant & Dallas counties. I have since outgrown that working memory. So, I will continue programming with the recommended method, "auto & search." From what I'm seeing, DFW is saturated with Federal activity.

Thanks for the information about Federal users.

 

[KB7MIB]

Wirelessly posted (Mozilla/5.0 (X11; Linux i686; U; en-US) Gecko/20081217 Vision-Browser/8.1 301x200 LG VN530)

In the Phoenix area, there are a lot of 310 and 340 NAC's. 310 is listed as ICE. 340 is not listed. I've also seen a 670, also unlisted. (The clear transmissions on the freq with the 670 started on a freq with a 340. FBI or DEA?)

 

[KB7MIB]

Wirelessly posted (Mozilla/5.0 (X11; Linux i686; U; en-US) Gecko/20081217 Vision-Browser/8.1 301x200 LG VN530)

I've seen a 167, listed as FBI, and a 482, Postal Inspection Service? I've seen 114 (VA Hospital? many mentions of an ER), 156, and 710.

 

[KB7MIB]

Wirelessly posted (Mozilla/5.0 (X11; Linux i686; U; en-US) Gecko/20081217 Vision-Browser/8.1 301x200 LG VN530)

Oh, yeah, 920 for Federal Protective Service in Phoenix.

 

[KB7MIB]

Wirelessly posted (Mozilla/5.0 (X11; Linux i686; U; en-US) Gecko/20081217 Vision-Browser/8.1 301x200 LG VN530)

My apologies. The 114 and 156 were DCS codes, not NAC's. I wasn't paying close enough attention to my notes.


John

 

[ecps92]

The thing to remember, is the wiki is only a suggestion, since many agencies use the common $293

The most standard are the
$167 - FBI
$156 - DEA
$301 - Customs
$650 - ATF
$001 - TSA/SS

After that, it's a crap shoot.

Those $330 and $670 were attributed to IWN [Wide area network] by some folks - Likely it is a shared Network

Wirelessly posted (Mozilla/5.0 (X11; Linux i686; U; en-US) Gecko/20081217 Vision-Browser/8.1 301x200 LG VN530)

In the Phoenix area, there are a lot of 310 and 340 NAC's. 310 is listed as ICE. 340 is not listed. I've also seen a 670, also unlisted. (The clear transmissions on the freq with the 670 started on a freq with a 340. FBI or DEA?)

 

[KB7MIB]

Wirelessly posted (Mozilla/5.0 (X11; Linux i686; U; en-US) Gecko/20081217 Vision-Browser/8.1 301x200 LG VN530)

I've been informed that the 340/670 NAC traffic I heard was DHS. I thought it was narcotics surveillance due to the content of the transmissions, but apparantly I was wrong? (See "FBI Traffic in NO AZ")