Scanning ICE

[kd7rto]

From Federal NAC Codes - The RadioReference Wiki,
note the following line items:

201 BP, FPS CO, USSS Uniformed Div DC, VA Police, DOD CA
300 BP, ICE, BOP Trunked, NPS, ANGB, BATFE TX

I've seen NAC 201 on 406.6625 and 407.0. In the short time that I monitored, all traffic was encrypted.

I've also seen NAC 300 on 196.9375 and 170.4375, which might also be them.

 

[ecps92]

From Federal NAC Codes - The RadioReference Wiki,
note the following line items:

201 BP, FPS CO, USSS Uniformed Div DC, VA Police, DOD CA
300 BP, ICE, BOP Trunked, NPS, ANGB, BATFE TX

I've seen NAC 201 on 406.6625 and 407.0. In the short time that I monitored, all traffic was encrypted.

I've also seen NAC 300 on 196.9375 and 170.4375, which might also be them.

and a reminder for those late into the FEDCOM monitoring experience
a. A NAC Alone does not identify an Agency
b. A Freq Alone does not identify and Agency
c. A RID (Radio ID) Alone does not identify an Ageny

BTW, I assume you mean 169.9375 not 196.9375 ??

 

[nd5y]

and a reminder for those late into the FEDCOM monitoring experience
a. A NAC Alone does not identify an Agency

This especially true for trunked systems.
You could find what you think is a new P25 repeater on a known federal ageny frequency with a NAC that doesn't match anything and it's is really a trunked system voice channel.
Often the whole NAC or first two digits is the same as the System ID.

 

[ecps92]

This especially true for trunked systems.
You could find what you think is a new P25 repeater on a known federal agency frequency with a NAC that doesn't match anything and it's is really a trunked system voice channel.
Often the whole NAC or first two digits is the same as the System ID.

and then have a NAC in three states that the signals cover a wide area and find out it (NAC) belongs to three different agencies
but folks ass-u-me it's the one already in the RRDB.

Always is fun to put the pieces together from piece one of the large puzzle.

Thankfully other than MIL and the BoP, not much Federal Trunking in New England

 

[gldavis]

NAC's I've seen/heard at my location (North of Slat Lake County) are 000, 167&123, 300, 4A4, and 707. Most comms are encrypted, so I don't ID users.

 

[ecps92]

NAC's I've seen/heard at my location (North of Slat Lake County) are 000, 167&123, 300, 4A4, and 707. Most comms are encrypted, so I don't ID users.

Need more context besides just NAC's

Freq and NAC go a long way to begin to ID the Agency

 

[RaleighGuy]

Most comms are encrypted, so I don't ID users.

Even encrypted comms show the Radio ID of the people talking, that too helps in figuring out users, along with frequencies as @ecps92 said, the more information we have the easier it is to properly help you without making wild guesses.

 

[kd7rto]

Freq and NAC go a long way to begin to ID the Agency

Quite true, it is a good first step. Last time I searched the federal bands for P25 signals, a few years ago, I was seeing the default NAC of 293 used a lot. This time I'm seeing that has changed. While seeing a certain NAC in use does not definitively establish who the user is, it's a useful clue.

 

[ecps92]

Quite true, it is a good first step. Last time I searched the federal bands for P25 signals, a few years ago, I was seeing the default NAC of 293 used a lot. This time I'm seeing that has changed. While seeing a certain NAC in use does not definitively establish who the user is, it's a useful clue.

Yes, many agencies use the Motorola Default NAC Which does make it harder, but team work in ferretting out these users has help ID a good portion of them
ie: VA, USMS-CSO, USCG Various States National Guard, DoEd etc

 

[enosjones]

"Some" federal frequencies that I've heard key up once a minute or once every 2 minutes. only a couple I've heard do this so far, no other activity . it could be FBI/ICE or other federal agencies, it keys up enough to broadcast the NAC. might be something to monitor...

 

[ecps92]

"Some" federal frequencies that I've heard key up once a minute or once every 2 minutes. only a couple I've heard do this so far, no other activity . it could be FBI/ICE or other federal agencies, it keys up enough to broadcast the NAC. might be something to monitor...

That would indicate to me it's on a Vote-Scan network. As a radio is turned on, it (affiliates) sends out a signal saying Hello
and then all the Repeaters on that VS Net reply. The radio then automatically tunes (steers) to that Repeater

 

[enosjones]

Keys up every 2 minutes almost on the dot. on 167mhz, 2 signals at the same time 1 really strong one weaker. I'm thinking 2 towers one closest to me and one further away

 

[ecps92]

Keys up every 2 minutes almost on the dot. on 167mhz, 2 signals at the same time 1 really strong one weaker. I'm thinking 2 towers one closest to me and one further away

Which two freqs?

 

[enosjones]

167.4125 and 167.387

 

[enosjones]

nac 293

 

[gldavis]

Just confirmed, 167.2125, 167.3375, 167.4875, 168.8750, all key up at the same time. Traffic uses NAC 167
(most of the time, traffic is DES.)

 

[ecps92]

nac 293

?? are you saying 167.4125 and 167.3875 are $293 ? not $167 ??

 

[gldavis]

?? are you saying 167.4125 and 167.3875 are $293 ? not $167 ??

I have seen both NACs on those freqs. And now to complicate matters even more, I am seeing NAC BD9 on 169.9125, 169.9375, and 170.6250.

 

[ecps92]

I have seen both NACs on those freqs. And now to complicate matters even more, I am seeing NAC BD9 on 169.9125, 169.9375, and 170.6250.

Now, if you can see what RID's are being used with the different NAC's that may open an interesting discussion.

As in many areas, the USMS is (not really dispatched, but uses) the FBI Radio Network

US Marshals Service

US Marshals Service In many areas, the USMS shares dispatching service through the regional FBI radio network. They also can maint...

mt-fedfiles.blogspot.com

FBI RID for their users and USMS RIDS for those. However I have only seen the $167 NAC, not multi-NACs

Are you observing these with a Scanner or a Scanner and Logging Software that is also scanning many other frequencies/trunks?
Asking as I have seen Latency where the Display doesn't quite refresh fast enough, causing users to see/log NAC's from a prior frequency
appear on something next... aka False Hit or One Hit Wonders....

From a FEDCOM perspective, I show no BD9 notes...

 

[enosjones]

167.4125 which i assume is Ford ridge in carbon county is NAC 293
167.3875 which I assume is cedar mountain in emery county is NAC 293