I finally got a Pro-197 the other day and i've tried to monitor 172.475, it is decoding NAC 418 but the volume is real low and no voice or anything. Im confused. I am receiving TWRA P25 just fine. Thanks for any help given.
Post Your Mystery Frequencies
- Thread starter SOFA_KING
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SOFA_KING
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I noticed that unless I have an S-2.5 signal or more the GRE will not decode audio. On my trip to DE and back I had much broken audio because of that. I also had more encryption, especially around DC. I hope the next line of GRE scanners have much better P25 decode on weak signals.
So I got some new stuff and some strange stuff going up I95. On the trip up I scanned my best "all round" scan lineup and left the channels open with CSQ and code search. I was amazed at the number of cars that emmited RF noise on many of my scanner channels. Sometimes this noise would be riding along for miles (and driving me nuts). On the way back I scanned all closed with PL and P25 search. Since I did not much new PL stuff I prefered to keep the scanner locking on legit signals. Here are my condensed notes:
Common freqs like CPB, analog INS/BP (in FL), BATFE, USSS, and TSA were heard throughout the trip, so no need to point those out. USSS Washington, DC area was busy 24x7 on all the known common channels.
170.4125 PL 199.5 Ft. Pierce, FL (must be a bogus image)
410.1625 NAC 080 Vero Beach, FL (LE12/18, but KSC has a trunked system on it...heard for many miles)
165.8500 PL 123.0 Brevard area (INS/BP...nothing new)
167.7875 NAC 167 Brevard County (FBI...Orlando?)
407.7750 NAC 482 from Indian River County (USPS PI...home WA area rptr)
167.4875 NAC 167 from IRC? long range WA system (FBI Ft. Lauderdale north)
168.8875 NAC 167 North Brevard (FBI...Orlando?)
166.7375 NAC 200 North Brevard (new ICE...expected to hear much more of this but only got one hit)
167.7125 NAC 167 Titusville, FL (FBI...Orlando?)
164.7500 NAC 293 Titusville (NPS Merritt Isl.)
167.6875 NAC 167 Cocoa area (FBI)
167.5875 NAC 167 Daytona area (FBI)
169.4500 PL 118.8 St. Aug area (image or false PL...S/B CBP NET 2)
167.4625 NAC 167 St. Aug north (FBI)
165.3125 PL 156.7 St. Aug north (USCG NET 21 with new PL for me!)
163.2000 NAC 293 in-the-clear Jacksonville (USM repeater!)
162.1250 NAC 293 Jacksonville (USCG NET 109...new one for me)
155.4875 PL 151.4 NE FL (unknown repeater on VLAW32)
163.0500 PL 100.0 NE FL (USCG NET 12 analog with PL)
164.9250 NAC 067 Darien, GA area (Could be an image, but I heard this all through GA and at home during tropo. I heard a mix of traffic like it was trunked, and heard Charlie 100 a few times as well.)
410.1625 NAC 250 South of Savannah, GA (LE12/18 again...another trunked system)
167.2875 NAC 167 Savannah, GA (FBI)
155.4875 PL 151.4 S. SC (VLAW32...Another repeater with PL 151.4 some distance from the last)
166.0000 NAC 160 Holly Hill, SC (This group of trunked freqs came in through SC. Unknown if these are images or not.)
165.4125 NAC 160 Holly Hill, SC and north (USSS Q - but not USSS. Trunked...image?)
166.2250 NAC 160 Holly Hill, SC and north (trunked)
167.2250 NAC 160 Holly Hill, SC and north (trunked)
163.4125 NAC 160 Holly Hill, SC and north (trunked)
165.2250 NAC 160 Holly Hill, SC and north (trunked...last found on search...no control channel found)
167.5125 PL 123.0 & 103.5 S. NC area (unknown...images ?)
410.1625 NAC 050 Lumberton/Fayetteville, NC (LE12/18 again...yet another trunked system)
167.0875 PL 110.9 Raleigh, NC (Image on LE1CALL? Got two solid hits)
172.1500 NAC 194 Wilson, NC (TSA CH 2? Strange NAC...image?)
168.3750 NAC 167 Rocky Mount, NC (FBI)
172.9000 NAC 013 Richmond, VA area (TSA with different NAC...not a false)
165.9500 PL 167.9 Richmond, VA area (IRS CI channel...is this for real? Image?)
163.6750 NAC 084 ENC south of Fredricksburg, VA (I started to pick this up in VA and heard it past DC. INS/BP?)
418.9000 NAC 156 Fredricksburg, VA (DEA CH. 2...first DEA P25 Heard)
172.1500 NAC 19B Fredricksburg, VA (TSA CH 2? I got this NAC several times...image I think...maybe not!)
407.7250 NAC 482 Fredricksburg, VA (USPS PI)
164.6750 NAC 19B Richmond to Fredricksburg, VA (another image I think...maybe not!)
167.1625 PL 71.9 N. Fredricksburg, VA (unknown...image?)
167.7625 NAC 167 N. Fredricksburg, VA (FBI)
167.4125 NAC 167 N. Fredricksburg, VA (FBI)
168.8750 NAC 653 N. Fredricksburg, VA (NAC for DOJ 25 cities)
418.6750 NAC 156 N. Fredricksburg, VA (DEA CH 4...heard much more up north. Not worth reporting)
414.3125 NAC 066 Dale City, VA area (LE 14 direct..unknown...image?)
410.1875 NAC 066 Dale City, VA area (LE 11/17 ...unknown...image?)
164.6750 NAC 075 Dale City, VA area (unknown...heard this way up to N. Baltimore...very busy and ENC)
168.9750 PL 167.9 Dale City, VA area (FBI RPTR...Heard up to Balt)
167.2125 PL 167.9 Dale City, VA area through DC (FBI RPTR...Heard up to Balt...very hot CT ops!)
415.2000 NAC 201 Washington, DC area (FPS...very busy and heard through DC...closed CSQ down here)
170.7500 NAC 293 Washington, DC area (USMS Courthouse...also NAC 401 in VA.)
163.6500 NAC 081 Washington, DC area (INS/BP CH 6 ?...ENC...huge WA distance into VA)
163.7250 NAC 073 Washington, DC area (INS/BP CH ?...heard all the way past Baltimore)
407.7750 NAC 482 Washington, DC area (USPS PI)
167.6125 NAC 167 Washington, DC area (FBI)
414.0375 NAC FFB Washington, DC area (LE B CALL...NAC image or real?)
409.2750 NAC 3B4 Washington, DC area (unknown...two hits far apart...?)
407.6000 NAC 0F0 Washington, DC area (DSS)
164.9000 NAC 156 Washington, DC area (USCG NET 118? With this NAC???...Image?)
408.6000 NAC 0F0 Washington, DC area (DSS)
167.7875 NAC 653 Washington, DC area (DOJ 25 Cities Freq???)
170.8000 NAC 098 Washington, DC area (unknown...interesting)
167.4125 NAC 167 S. Baltimore, MD area (FBI)
166.2000 NAC 202 Baltimore, MD area (interesting! CBP NET 27 & 50 in FL. CBP P25?)
407.7250 NAC 482 Baltimore, MD area (USPS PI)
166.4625 NAC 001 Baltimore, MD area (DHS common...might be legit NAC)
406.3375 NAC 482 Baltimore, MD area (USPS PI)
163.7000 NAC 097 N. Baltimore, MD area (INS/BP ?)
167.6375 NAC 167 N. Baltimore, MD area (FBI)
167.7875 NAC 167 N. Baltimore, MD area (FBI...or 25 cities?)
165.7000 NAC 012 N. Baltimore, MD area down to N. VA area! (unknown...interesting...who?)
163.6500 NAC 385 Wilmington, DE area (INS/BP CH 6?)
165.8250 NAC 094 Wilmington, DE area (unknown...INS/BP?)
171.4375 NAC 653 Wilmington, DE area (DOJ 25 Cities...also got NAC 94C...false NAC?)
167.0500 NAC 243 Wilmington, DE (I had mant hits in a 25 minute period. FCC???)
409.9375 NAC 482 Camden, NJ area (USPS PI)
170.7500 NAC 293 Phili, PA area (USMS Fed Courthouse)
172.9000 NAC 001 Phili, PA area (TSA...last record at end of the north trip. South hits added into this list)
Those are the high points of what I recorded. Very little going on in NC, SC, and parts of GA. That trunked (image?) traffic that I heard on fed channels is a mystery. Perhaps someone who lives in the area can give me the skinny.
Phil
Did you get anything on the 168.7625 frequency? I'll have to keep an eye on 172.9. Interesting that they are using more than 1 NAC. I guess I'll have to start searching 400MHz more often, seems like it's more active.
They normally use multiple NAC codes depending on their setup.
From the wiki:
Transportation Security Administration
Ch 5 172.9000 NAC 002 S2 Simplex 2
Ch 7 172.9000 NAC 001 R1 Repeater 1
Ch 8 172.9000 NAC 002 R1 Repeater 2
Ch 9 172.9000 NAC 003 R1 Repeater 3
Ch 10 172.9000 NAC 001 S2 Simplex 1
Ch 11 172.9000 NAC 003 S2 Simplex 3
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Thanks for the info. Maybe one of these days, I'll have to go up by the airport and take a listen. That means that the DB surely isn't accurate.
W9NES
Member
SOFA KING, Thanks for posting your freqs you found on your trip up I-95. I set them up in my Uniden 996T here in Indianapolis,In and will let you know if I hear any thing on them here.
SOFA_KING
Member
Roger that, all ~
No, sorry trainman111. I have to admit that this was limited by my scan list. I forgot to put that in. I had CB 19 with attenuation going for a while but locked it out due to all the useless chit chat. I did have to listen to it when the traffic came to a complete stop, TWICE. I wanted to know what different PL tones or P25 was on my usual 427 channels. Some of my cahnnels are also suspect or reported channels for certain agencies. If I used my P25 search files I would have been limited to one band at a time, and there would be no PL detection, only P25. If I used a regular search, I would not have computer logging (can't figure out how to get Win500 to do logging on search ranges) and I would get a bunch of false noise, intermods, and junk. The drive required my full attention as the traffic was very bad on the way up. Lots of "log jams" as people driving 55 (or less) were clogging the left lanes...never heard of "SLOWER TRAFFIC KEEP RIGHT". Sorry they took those signs down! Funny...in VA the right lane was often open until you came up on one or two slow pokes, then you had to fight to get over to the middle lane. It was a constant battle from left to right and back just to make some headway. What is the problem up there? The drive back was much better as traffic was lighter.
About that GA trunked traffic...I logged a bunch of trunked channels coming in on some band openings that match that NAC 067 code. These may be part of that system and can't be an image. Is GA and SC doing the IWN trunked thing? Here is what I have so far:
163.0125 (believed to be the control channel for this system as it came in when the traffic channels did)
162.0625
163.3125
164.1875
164.5375
164.9250
I wish I hit the search when I was up there. Looks like I need to do another road trip.
Phil
No, sorry trainman111. I have to admit that this was limited by my scan list. I forgot to put that in. I had CB 19 with attenuation going for a while but locked it out due to all the useless chit chat. I did have to listen to it when the traffic came to a complete stop, TWICE. I wanted to know what different PL tones or P25 was on my usual 427 channels. Some of my cahnnels are also suspect or reported channels for certain agencies. If I used my P25 search files I would have been limited to one band at a time, and there would be no PL detection, only P25. If I used a regular search, I would not have computer logging (can't figure out how to get Win500 to do logging on search ranges) and I would get a bunch of false noise, intermods, and junk. The drive required my full attention as the traffic was very bad on the way up. Lots of "log jams" as people driving 55 (or less) were clogging the left lanes...never heard of "SLOWER TRAFFIC KEEP RIGHT". Sorry they took those signs down! Funny...in VA the right lane was often open until you came up on one or two slow pokes, then you had to fight to get over to the middle lane. It was a constant battle from left to right and back just to make some headway. What is the problem up there? The drive back was much better as traffic was lighter.
About that GA trunked traffic...I logged a bunch of trunked channels coming in on some band openings that match that NAC 067 code. These may be part of that system and can't be an image. Is GA and SC doing the IWN trunked thing? Here is what I have so far:
163.0125 (believed to be the control channel for this system as it came in when the traffic channels did)
162.0625
163.3125
164.1875
164.5375
164.9250
I wish I hit the search when I was up there. Looks like I need to do another road trip.
Phil
Welcome to VA Phil! Traffic around Richmond is always horrible. It makes me wonder how come of these drivers got their licenses. It sure does sound like you need to make another road trip to me. I bet there's lots of things out there that no one else has found that you probably would
SOFA_KING
Member
Welcome to VA Phil! Traffic around Richmond is always horrible. It makes me wonder how come of these drivers got their licenses. It sure does sound like you need to make another road trip to me. I bet there's lots of things out there that no one else has found that you probably would
Yes, another trip...I think so! I love road trips, and VA was very nice other than the traffic. I like that I295 beltway around Richmond. I had to be somewhere by a time deadline, so I was not wanting to go very slow, but mybe a scanner trip with no time limit would be fun. I am wondering about that trunked fed stuff!
This is tempting.
Phil
The Ga. freqs are part of the FLETC system. Scanner Frequencies: Federal Law Enforcement Training Center Trunking System, Brunswick, Georgia
SOFA_KING
Member
FLECT it is. I have heard of this for many years, but I did not expect it to be as big as it was...or trunked! What I heard sounded like ops and not training. There was a lot of traffic.
Thanks!
Now what about those SC trunked fed channels???
Phil
New to P25
Hello all,
After having a Pro-2021 for over 20 yrs, it finally bit the dust last year and earlier this year I replaced it with a BCT-15. Would have liked to get a digital scanner but funds just wouldn't allow it. So do you need a dig scanner to scan the way you pro's are doing it? What is the NAC code that I see posted quite a bit here? I have the old analog style freq's galore for gov't but if they converted to digital I just may have to save my pennies for a digital scanner.....any help? suggestions?
Thanks all
KC
Hello all,
After having a Pro-2021 for over 20 yrs, it finally bit the dust last year and earlier this year I replaced it with a BCT-15. Would have liked to get a digital scanner but funds just wouldn't allow it. So do you need a dig scanner to scan the way you pro's are doing it? What is the NAC code that I see posted quite a bit here? I have the old analog style freq's galore for gov't but if they converted to digital I just may have to save my pennies for a digital scanner.....any help? suggestions?
Thanks all
KC
SOFA_KING
Member
Hi kc8flq, and welcome. Where are you at? Many agencies have gone digital or will be soon. You will not hear much in the near future on analog. USSS, IRS, ATF, TSA, USMS, USCG, DSS, USPS, and maybe more I am forgetting are all digital nationwide now. No analog to speak of. Others like FBI (half and half in most areas), USC (CBP), INS, BP, ICE, DEA, NPS, USFS, VA, FPS etc are in the transision in parts of the country. Some areas have gone full P25 digital on one or more of these agencies. Many state systems are digital, and even some local agencies now. My local college security even went P25 digital!This is the time to upgrade or get left out.
The NAC people talk about is the Network Access Code. It is a PL (CTCSS) or DPL (DCS) for the digital P25 world. We are all searching these out and taking notes on who uses what, and where. It helps to identify who you are picking up. Many digital coms are encrypted
and you can't tell who it is unless you read a well know NAC code. NAC codes can be read even when encrypted (unlike analog DES encryption), so you can get a good idea of who you are hearing on a frequency even though you can't hear what they are saying. It is a new world, and I think more fun for searchers as things change.Phil
I got 170.075 with 225.7 pl today at home, real clear either direct channel (car to car) or input side of a repeater.
From Ottawa Ontario I am picking up P25 Encrypted on 165.2400mhz. Most likely US Border Patrol from St Lawrence County. I am using a Pro2096.
SOFA_KING
Member
FBI with a NAC of 330, input is 164.0125. Linked together with 167.5125 and 167.5625. The radio techs have been testing the system for the past couple of days.
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