Has the ECSD gone encrypted on their 482.5875 frequency?
Essex County Sheriff Department
- Thread starter potala1369
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ecps92
Member
Not P25 as I monitor the Methuen PD on my Pro 96
ecps92
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Encrypted signal sounding similar to the Lawrence PD and various Federal agencies.
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Lawrence is P25 with encryption, as are federal agencies. So, it's likely that what you are hearing is the same. I'm likely too far away to hear it, but I'll give listen.
ecps92
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IMHO, encrypted is encrypted; doesn't make any difference to me whether it is P25 or analog. If I am wrong, I am sure someone will correct me.
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They sound different, which might help people to figure out what's going on. Both Scituate and New Bedford operate P25 on that frequency. Neither are encrypted, so we know it's not them.
I have to get closer to Salem or Middleton so I don't hear the two departments further to the south.
I have to get closer to Salem or Middleton so I don't hear the two departments further to the south.
RKG
Member
Encryption long antedates the P25 digital voice algorithm (more properly referred to as CAI, which uses the DVSI IMBE digital format as it's input). It is theoretically possible that ECSO is using one of the older algorithms -- such as DVP -- but I'd be really surprised if such were the case.
ecps92
Member
Hope all is well
Hello,
I put the frequency in a radio and got P25 with a NAC of 545 at about a S5 signal. Looks like it is Scituate PD. I will monitor more and see if there is anything else.
73 Eric
I put the frequency in a radio and got P25 with a NAC of 545 at about a S5 signal. Looks like it is Scituate PD. I will monitor more and see if there is anything else.
73 Eric
ecps92
Member
2+ days and only Scituate heard
And if "it sounds like Lawrence and Feds", then it is P25, but there had been no reports of the ECSO going P25
And if "it sounds like Lawrence and Feds", then it is P25, but there had been no reports of the ECSO going P25
Hello,
I fired up the SDS200 and put in the four ECSO frequencies. One interesting item on their WRAD238 license is DMR and NFM authorized on 470.3375. I heard some traffic on 482.9125 with a PL of 123.0 that I assume is them.
I did finally hear some encrypted P25 traffic on 482.58750 with a NAC of 978. The SDS200 briefly paused and skiped it, but the Icom IC-R8600 caught it.
73 Eric
I fired up the SDS200 and put in the four ECSO frequencies. One interesting item on their WRAD238 license is DMR and NFM authorized on 470.3375. I heard some traffic on 482.9125 with a PL of 123.0 that I assume is them.
I did finally hear some encrypted P25 traffic on 482.58750 with a NAC of 978. The SDS200 briefly paused and skiped it, but the Icom IC-R8600 caught it.
73 Eric
Hello,
This afternoon I heard a repeater keyup on 482.58750 with a PL of 123.0, shortly followed by a CW ID for WIG447. So the analog repeater is still active.
73 Eric
This afternoon I heard a repeater keyup on 482.58750 with a PL of 123.0, shortly followed by a CW ID for WIG447. So the analog repeater is still active.
73 Eric
Hello,
It is difficult to follow up on the NAC 978 signal as several Unidens and the Icom R8600 do not record encrypted traffic. I am trying a new setup today and will likely do a field trip over the weekend.
The busiest ECSO channels are 482.9125 PL 123.0 for transport and 460.4125 123.0 (Channel 5) for mainly movements in Middleton Jail. 460.4125 is also licensed for the Lawrence Jail that was demolished in the late 1980s. I suspect it is really for the Lawrence Correctional Alternative Center.
73 Eric
It is difficult to follow up on the NAC 978 signal as several Unidens and the Icom R8600 do not record encrypted traffic. I am trying a new setup today and will likely do a field trip over the weekend.
The busiest ECSO channels are 482.9125 PL 123.0 for transport and 460.4125 123.0 (Channel 5) for mainly movements in Middleton Jail. 460.4125 is also licensed for the Lawrence Jail that was demolished in the late 1980s. I suspect it is really for the Lawrence Correctional Alternative Center.
73 Eric
I ran into Essex County Sheriff Kevin Coppinger at an awards function on the evening of April 5th. I know him from covering the Sheriff's race from 2016. I asked him if the ECSD operational frequency is encrypted and his answer was "No!". He is trying to find the funds to relocate to either the 700 or 800 megacycle range. And he is aware of the likely hood of having to relocate the T-Band frequencies in several years.
Hello,
When I was in Lawrence for a brief period on Sunday, I did not hear anything that could be identified as coming from the Lawrence Correctional Alternative Center. It is difficult to prove a negative as I might have been listening during a quiet time.
After a couple of days of monitoring 482.5875, I finally saw more activity with the 978 NAC yesterday. It was mostly two UIDs of 77 and 461, plus one transmission with a UID of 7. There were a long series of exchanges between 77 and 461 at 8:16 PM EDT to 8:19 PM EDT. The R8600 logged the transmissions but had no audio files. The HP1 had audio files but they were silent. I need to check for sure with dsd, but the transmissions are likely encrypted. It will be difficult to confirm NAC 978 is coming from the Middleton repeater as transmissions are sporadic.
73 Eric
When I was in Lawrence for a brief period on Sunday, I did not hear anything that could be identified as coming from the Lawrence Correctional Alternative Center. It is difficult to prove a negative as I might have been listening during a quiet time.
After a couple of days of monitoring 482.5875, I finally saw more activity with the 978 NAC yesterday. It was mostly two UIDs of 77 and 461, plus one transmission with a UID of 7. There were a long series of exchanges between 77 and 461 at 8:16 PM EDT to 8:19 PM EDT. The R8600 logged the transmissions but had no audio files. The HP1 had audio files but they were silent. I need to check for sure with dsd, but the transmissions are likely encrypted. It will be difficult to confirm NAC 978 is coming from the Middleton repeater as transmissions are sporadic.
73 Eric
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