Plymouth PD

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scottb908

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Over the last day or so I have noticed that Plymouth PD is no longer coming through. Not sure if they switched to encrypted/or moved frequencies. Anyone have any information?
 

Reconrider

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I believe I just heard Plymouth PD come over encrypted but I cannot see the network access code
This makes no sense. If they're enc, you don't hear them.
You can't see a NAC if you don't have good signal to them.

Last I knew they were FM and didn't have any plans to upgrade to anything digital.
 

LD723

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They have the P25 emission designator 8K10F1E on their license for the frequencies. Possibly it may be in use at certain times or they've fully migrated. I am not from the area and I wish I knew for sure to help you guys out
 

W1KNE

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This makes no sense. If they're enc, you don't hear them.
You can't see a NAC if you don't have good signal to them.

Last I knew they were FM and didn't have any plans to upgrade to anything digital.
You can hear a transmission that is encrypted. On scanners it will sound like digital garbage before the scanner rejects it. Older scanners will just stay on the encrypted channel until the transmission ends.

So one person has heard them encrypted and another user submitted hearing them encrypted P25, but no NAC. I won't enter into the DB without a NAC, so we need to get that first.
 

scottb908

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I am in Terryville and a feed provider for it. Will the SDS100 give the NAC? I cant help but wonder if my feed was part of catalysis for it. Last week we had police stand off with a possible armed suspect. Had someone who has previously identified themselves as working with the PD ask if I could shut the feed down for officer safety. I was not home at the time to have access to the radio or streaming PC.
 

scottb908

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You can hear a transmission that is encrypted. On scanners it will sound like digital garbage before the scanner rejects it. Older scanners will just stay on the encrypted channel until the transmission ends.

So one person has heard them encrypted and another user submitted hearing them encrypted P25, but no NAC. I won't enter into the DB without a NAC, so we need to get that first.


Just confirmed using sdr trunk

20210417 170248,PASSED,NAC:1319 LDU2 VOICE LSD:CDF7 ENCRYPTION:ADP KEY:46169 MSG INDICATOR:8961DDBAD3CF569A00
20210417 170248,PASSED,NAC:1319 LDU1 VOICE LSD:CCAC GROUP VOICE CHANNEL USER FM:1 TO:1 SERVICE OPTIONS:pRI4 ENCRYPTED CIRCUIT
20210417 170248,PASSED,NAC:1319 LDU2 VOICE LSD:7417 ENCRYPTION:ADP KEY:46169 MSG INDICATOR:E59DC1519C14FF9900
20210417 170248,PASSED,NAC:1319 LDU1 VOICE LSD:7ACF GROUP VOICE CHANNEL USER FM:1 TO:1 SERVICE OPTIONS:pRI4 ENCRYPTED CIRCUIT
20210417 170249,PASSED,NAC:1319 LDU2 VOICE LSD:9A01 ENCRYPTION:ADP KEY:46169 MSG INDICATOR:4D718E70C5C7B79400
20210417 170249,PASSED,NAC:1319 LDU1 VOICE LSD:5441 GROUP VOICE CHANNEL USER FM:1 TO:1 SERVICE OPTIONS:pRI4 ENCRYPTED CIRCUIT
20210417 170249,PASSED,NAC:1319 LDU2 VOICE LSD:091A ENCRYPTION:ADP KEY:46169 MSG INDICATOR:55BDE7822566722400
20210417 170249,PASSED,NAC:1319 LDU1 VOICE LSD:9E77 GROUP VOICE CHANNEL USER FM:1 TO:1 SERVICE OPTIONS:pRI4 ENCRYPTED CIRCUIT
20210417 170249,PASSED,NAC:1319 LDU2 VOICE LSD:5EAD ENCRYPTION:ADP KEY:46169 MSG INDICATOR:DD508BE156CA5C6400
20210417 170249,PASSED,NAC:1319 LDU1 VOICE LSD:7A49 GROUP VOICE CHANNEL USER FM:1 TO:1 SERVICE OPTIONS:pRI4 ENCRYPTED CIRCUIT
20210417 170250,PASSED,NAC:1319 TDU
20210417 170250,PASSED,NAC:1319 TDULC MOTOROLA TALK COMPLETE BY:1 UNK1:10 UNK2:F0 MSG:0F90100000F0000001


"2021:04:17:17:02:43","202","APCO-25","Call","1111409","","","453.350000","",""
"2021:04:17:17:02:43","202","APCO-25","Encrypted Call","1111409","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:43","380","APCO-25","Encrypted Call","1111409","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:43","551","APCO-25","Encrypted Call","1111409","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:43","551","APCO-25","Encrypted Call","1111409","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:43","727","APCO-25","Encrypted Call","1111409","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:43","905","APCO-25","Encrypted Call","1111409","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:43","905","APCO-25","Encrypted Call","1111409","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:43","930","APCO-25","Encrypted Call","1111409","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","","APCO-25","Encrypted Call","","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","","APCO-25","Encrypted Call","","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","176","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","349","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","349","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","550","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","698","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","698","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","900","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","1075","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","1075","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","1253","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","1448","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","1448","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","1623","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
"2021:04:17:17:02:48","1786","APCO-25","Encrypted Call","1","","","453.350000","","ALGORITHM:ADP"
 

LD723

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Odd they are using ADP in 2021 lol but who knows if it's permanent.
You streaming it could've had an impact but no one knows for sure unless you ask them
 

scottb908

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I suspect this will be a full time change. If they have spend the money to install the equipment and they are using it, I cant see them switching back.
 

LD723

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I have no idea when the P25 emission designator was added to the fcc database but if it was there for a while, they probably have had the equipment for around that amount of time likely. My question is why the ADP encryption instead of the AES which is more of the norm now.
 

W1KNE

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I suspect this will be a full time change. If they have spend the money to install the equipment and they are using it, I cant see them switching back.
Tell that to Holliston, MA. (They went from analog to full P25E, then reverted back to analog about a week later). But I suspect you're correct.

I assume your SDR trunk is displaying the NAC in decimal format, which in hex would be 527. (RRDB uses HEX NACs)
 

Reconrider

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I have no idea when the P25 emission designator was added to the fcc database but if it was there for a while, they probably have had the equipment for around that amount of time likely. My question is why the ADP encryption instead of the AES which is more of the norm now.
I actually went looking around to see if they posted a budget for quotes for the upgrades. I found nothing on their website so I'm thinking they were given the equipment from another agency. Anyway, the p25p1 emissions was added 9.11.2020 and they added 5 sites.
Admin log page where things are logged for updates - ULS Application - Public Safety Pool, Conventional - 0009219061 - PLYMOUTH, TOWN OF - Transaction Log








1 - Fixed FIRE DEPT ALLENTOWN RD
TERRYVILLE, CT LITCHFIELD County
2 - Fixed WATER TANK N HARWINTON AVE
TERRYVILLE, CT LITCHFIELD County
3 - Fixed PLYMOUTH TOWN HALL 80 MAIN ST
TERRYVILLE, CT LITCHFIELD County
4 - Mobile30.0 km radius around a fixed location 1
5 - Fixed 62-135 TOWN HILL RD, FAIR GROUNDS
TERRYVILLE, CT LITCHFIELD County
 

P25andstuff

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I actually went looking around to see if they posted a budget for quotes for the upgrades. I found nothing on their website so I'm thinking they were given the equipment from another agency. Anyway, the p25p1 emissions was added 9.11.2020 and they added 5 sites.
Admin log page where things are logged for updates - ULS Application - Public Safety Pool, Conventional - 0009219061 - PLYMOUTH, TOWN OF - Transaction Log








1 - Fixed FIRE DEPT ALLENTOWN RD
TERRYVILLE, CT LITCHFIELD County
2 - Fixed WATER TANK N HARWINTON AVE
TERRYVILLE, CT LITCHFIELD County
3 - FixedPLYMOUTH TOWN HALL 80 MAIN ST
TERRYVILLE, CT LITCHFIELD County
4 - Mobile30.0 km radius around a fixed location 1
5 - Fixed 62-135 TOWN HILL RD, FAIR GROUNDS
TERRYVILLE, CT LITCHFIELD County
Another agency falls quiet :/
 

scottb908

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I actually went looking around to see if they posted a budget for quotes for the upgrades. I found nothing on their website so I'm thinking they were given the equipment from another agency. Anyway, the p25p1 emissions was added 9.11.2020 and they added 5 sites.
Admin log page where things are logged for updates - ULS Application - Public Safety Pool, Conventional - 0009219061 - PLYMOUTH, TOWN OF - Transaction Log








1 - Fixed FIRE DEPT ALLENTOWN RD
TERRYVILLE, CT LITCHFIELD County
2 - Fixed WATER TANK N HARWINTON AVE
TERRYVILLE, CT LITCHFIELD County
3 - FixedPLYMOUTH TOWN HALL 80 MAIN ST
TERRYVILLE, CT LITCHFIELD County
4 - Mobile30.0 km radius around a fixed location 1
5 - Fixed 62-135 TOWN HILL RD, FAIR GROUNDS
TERRYVILLE, CT LITCHFIELD County
I wonder if it occurred as part of the merge with LCD dispatch
 
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