NJ Federal Frequencies

[TAS]

Nac

NAC of $167 for all three

 

[FireBuff44]

I heard DEA using NAC $156 on the active DEA freqs lately, 419.500, 418.625, 418.675.

I have heard P25 activity on 165.8375 occasionally but I don't have any NAC info. Someone here advised that this was BICE?/Immigration service. I also heard P25 on 163.775 which is listed as INS also, mainly informal chit chat.

165.950 keyed up briefly the other day for a second in P25 mode. Monitoring Times listed this as Treasury Inspector General/Tax Admin.

Keep the thread going this info is good!

 

[W2SJW]

I heard DEA using NAC $156 on the active DEA freqs lately, 419.500, 418.625, 418.675.

I have heard P25 activity on 165.8375 occasionally but I don't have any NAC info. Someone here advised that this was BICE?/Immigration service. I also heard P25 on 163.775 which is listed as INS also, mainly informal chit chat.

165.950 keyed up briefly the other day for a second in P25 mode. Monitoring Times listed this as Treasury Inspector General/Tax Admin.

Keep the thread going this info is good!

Sorry to hijack this a little, but it appears you guys that are getting the NAC's for the P25 transmissions are using the new GRE PSR's...

If so, how do you like the performance of the unit? I've been quite tempted in that last week or so to get one (but keep my 396 as well).

 

[n2nov]

Have you noticed that the NACs are the first 3 digits of their former PL tones?

 

[HM1529]

Have you noticed that the NACs are the first 3 digits of their former PL tones?

Although it hardly seems to be a federal standard, there are a few three letter agencies that seem to have taken this route...perhaps it is just easier to remember.

 

[ecps92]

There have been a few different ways to approach the conversion.

The ones we are seeing seem to be the most common of late. Others are just willy-nilly.

However here is a copy of an original NAC Conversion Chart.

CTCSS to NAC Conversion
Early TIA documents specifi ed a formula for converting analog CTCSS
tones and DCS codes to specifi c NAC codes. Those documents have
since been removed and the selection of NAC codes has been left
to the user. Some government agencies have defi ned a conversion
table for their own use for translating CTCSS to NAC codes (eg. State
of California and others).
Shown below is the early TIA conversion table from CTCSS to
NAC codes. These codes were determined by taking the CTCSS
frequency and multiplying it by ten, then converting the integer result
to a hexadecimal number.

CTCSS to NAC code conversion chart

CTCSS NAC Code
67.0 Hz $29E
69.3 Hz $2B5
71.9 Hz $2CF
74.4 Hz $2E8
77.0 Hz $302
79.7 Hz $31D
82.5 Hz $339
85.4 Hz $356
88.5 Hz $375
91.5 Hz $393
94.8 Hz $3B4
97.4 Hz $3CE
100.0 Hz $3E8
103.5 Hz $40B
107.2 Hz $430
110.9 Hz $455
114.8 Hz $47C
118.8 Hz $4A4
123.0 Hz $4CE
127.3 Hz $4F9
131.8 Hz $526
136.5 Hz $555
141.3 Hz $585
146.2 Hz $5B6
151.4 Hz $5EA
156.7 Hz $61F
162.2 Hz $656
167.9 Hz $68F
173.8 Hz $6CA
179.9 Hz $707
186.2 Hz $746
192.8 Hz $788
203.5 Hz $7F3
206.5 Hz $811
210.7 Hz $83B
218.1 Hz $885
225.7 Hz $8D1
229.1 Hz $8F3
233.6 Hz $920
241.8 Hz $972
250.3 Hz $9C7
Obtained from http://www.p25.com/resources/P25TrainingGuide.pdf

Although it hardly seems to be a federal standard, there are a few three letter agencies that seem to have taken this route...perhaps it is just easier to remember.

 

[DaveNF2G]

What does the dollar sign ($) signify at the beginning of NAC entries?

 

[mredding]

What does the dollar sign ($) signify at the beginning of NAC entries?

It denotes it's a hexadecimal number. Applies beyond NAC codes.

 

[DaveNF2G]

I had thought of that, but the PSR-500 does not read out NAC in hex. The conversion list posted above is obviously hexadecimal, but some of the other postings in the thread are regular decimal numbers. That's why I wondered why everyone was prefixing their NAC listings with the dollar sign.

 

[TAS]

Hex

The NAC codes for the PSR-500 are entered in hexadecimal format, thus the $.

 

[DaveNF2G]

Must be optional. I've never seen a NAC code with a letter in it. My unit's NAC 100 is entered and displayed as 100, not as 3E8.

 

[W2SJW]

Just as an FYI - If you have the FPP option on an XTS (like my VHF one), they enter the same as the PSR-500...

 

[rjones]

413.4125 VA Police E. Orange - P25 NAC $293

166.6375 NPS - Liberty / Ellis Operations (NY/NJ) - P25 NAC $4F9

167.7875 FED LE InterOp (NY/NJ) - P25 NAC $653

417.200 DHS FPS PD (NY/NJ) - P25 NAC $293 (NJ Units 2G2201 & 2G2202)

407.725 USPS Inspectors NJ - P25 (ENC) NAC $482

Please add your NJ Federal updates on this thread.

TAS

The 2G2201 & 2G2202 are most likely contract security guards. From monitoring the DHS, FPS TRS here in Atlanta I've noticed the first digit of the callsign is the Region, and the second digit is the type of unit. G=contract security, P=FPS uniformed patrol, S=(posibly Investigators?)

Rod
Atlanta, Ga

 

[JRM5204]

The 2G2201 & 2G2202 are most likely contract security guards. From monitoring the DHS, FPS TRS here in Atlanta I've noticed the first digit of the callsign is the Region, and the second digit is the type of unit. G=contract security, P=FPS uniformed patrol, S=(posibly Investigators?)

Rod
Atlanta, Ga

In Philly it's region 3 and also covers Camden, NJ. I hear the 3 Paul units during the day and the 3 George units during the night.

 

[FireBuff44]

I know it should be in the NY Forum, but 170.625 and 170.825 were both active in P25 mode for the New Years Eve detail last night.

 

[GM]

NJ Unid UHF Fed. TRS

New Challenge:

While I was on a mission to figure out some of the US Fish & Wildlife freq's in the Wallkill River NWR area (Sussex NJ), I came across an unidentified 3600 baud P25 TRS running in the UHF-Lo band. The freq's are as follows:

407.0125 (control channel)
408.0125
408.8125
409.4125
410.0125

Meanwhile, I'm still working on my other project to find new stuff, Dept. of Interior related.

Edit: I didn't look at the NY forum, looks like that's the Federal Correctional Institute in Orange County. I should have ckecked that, (Oops).

 

[JRM5204]

I beleive 407.0125 is a P25 control channel for the federal detention center in Center City Philadelphia too.

 

[HM1529]

Meanwhile, I'm still working on my other project to find new stuff, Dept. of Interior related.

Just FYI that John Heinz NWR in Philly is on VHF....P25 and simplex. 168.0125

 

[skip39]

thats the frequencies for otisville federal prison in orange county new york. its a 400 mhz digital federal trunked system

 

[skip39]

if you looking for dept of interior frequences heres one:
168.475 -P25. NPS delaware water gap(Ranger/park operations)