San Francisco Public Safety going Digital June 2021

footage

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The patrol units seem to be using the system. I'm also seeing traffic on the low-numbered TGs, like 28
 

KD6JEK

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How about the unencrypted on the P-25 for the PD? Would like to know if we will be able to hear them. Encrypted doesn't do anything if you can't hear them.
 

footage

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I have seen log entries indicating the odd-numbered SFPD TGs (which we assume will be the unencrypted ones) have been active very rarely from time to time, but have heard no unencrypted SFPD traffic since I started monitoring the new system early this summer. Aside from the articles in the Palo Alto paper (which have been heavily quoted elsewhere, and doesn't quote any official spokespeople from SFPD) I have not seen any confirmation that SFPD will be transmitting initial dispatches and dispositions in the clear, as rumor will have it.

I would be very curious whether anyone knows for sure whether SFPD intends to leave some TGs or transmissions in the clear.
 

KD6JEK

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I have been told by my friends in the SFPD that the department plans to unencrypt A1, A3, A5, and A7, but we'll see after they switch over to the new system and unpatch from the old analog one.
 

officer_415

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Has anyone seen medic-to-hospital traffic on either system lately? (SmartZone talkgroups 944/976 or P25 talkgroups 59/61)
 

officer_415

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The audio quality is horrific. Techs are saying it may improve when the old analog system is shut down.

Analog to digital conversion always sounds like garbage. If you're hearing units on the old system being patched to the new system, that's why. It should sound better when everyone is on the new system.
 

rooivalk

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Analog to digital conversion always sounds like garbage. If you're hearing units on the old system being patched to the new system, that's why. It should sound better when everyone is on the new system.

But, this is from units using the new system, not an analog to digital comm. Cut off is first week of Nov....Hope for the full time users (PD and FD) that it gets better.
 

footage

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Bunch of activity yesterday on newly heard low-numbered encrypted TGs: 6, 20, 12, 16, 67, 69, 77, 79. As usual lots of activity on the 1400 series as well, all ENC. From the density of transmissions on the 1400 series I am hypothesizing that these are DPT, which might well be encrypted because of the large amount of PII that is passed over these TGs. I have not heard DPT units on other unencrypted TGs.
 

officer_415

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As usual lots of activity on the 1400 series as well, all ENC. From the density of transmissions on the 1400 series I am hypothesizing that these are DPT, which might well be encrypted because of the large amount of PII that is passed over these TGs. I have not heard DPT units on other unencrypted TGs.

Is there any corresponding traffic on the DPT/Scoff/Tow talkgroups on the old system?
 

rustyhodge

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For the next day or two, I'm running a SFFD digital stream (via the P25rx) on SomaFM on https://somafm.com/live2
I'm on a Mac, using the following setup: Loopback software to create a virtual audio device that I then stream with AudioHijack to our Icecast servers. I haven't hooked up the metadata yet, but maybe later today.

I'm running this as a 64k mono MP3 stream so it should be a pretty accurate representation of the audio out of the P25RX.

It also gives you a feel for what's being used on digital in SF now.

My receiver is in a location in Bernal Heights that's slightly shielded from Twin Peaks, but does have a clear view of downtown.
 

kg6nlw

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I got a while to let the SDR run the system today...This is the log whittled down to the most important info...Of note, TG1419 was attempted to register on the system by a radio and got denied (wrong radio ID?). I also note, there is a possible site 22 that is ISOLATED. Just some log thoughts to chew on...


2021/10/25 14:23:30 Freq=773.681250 NAC=2B0 Current site: 1.25
2021/10/25 14:23:30 Freq=773.681250 NAC=2B0 Current network: BEE00.2BB SF CITY/COUNTY P25
2021/10/25 14:23:32 Freq=773.681250 NAC=2B0 Current site: BEE00.2BB-1.25 SF P25 - City 700 Simulcast
2021/10/25 14:23:33 Freq=773.681250 NAC=2B0 BEE00.2BB-1.25 neighbor: Site BEE00.2BB-1.26; CC=1-2064 774.90625 SF P25 - SFO Airport
2021/10/25 14:23:35 Freq=773.681250 NAC=2B0 BEE00.2BB-1.25 neighbor: Site BEE00.2BB-1.21; CC=0-39 851.25000 SF P25 - City 800 Simulcast
2021/10/25 14:23:37 Freq=773.681250 NAC=2B0 BEE00.2BB-1.25 neighbor: Site BEE00.2BB-1.22; CC=0-201 852.26250 ISOLATED
2021/10/25 14:23:56 Freq=773.681250 NAC=2B0 Registration; RID=6060241 TG=36147 DENY
2021/10/25 14:26:26 Freq=773.681250 NAC=2B0 Registration; RID=6070055 TG=3025 DENY
2021/10/25 14:28:30 Freq=773.681250 NAC=2B0 Affiliation; RID=6075045 TG=36117 ACCEPT
2021/10/25 14:28:34 Freq=773.681250 NAC=2B0 Registration; RID=6075065 TG=1419 DENY
2021/10/25 14:33:46 Freq=773.681250 NAC=2B0 Registration; RID=6001324 TG=806 [ (TDMA)] DENY
2021/10/25 14:35:39 Freq=773.681250 NAC=2B0 Registration; RID=6058274 TG=4061 DENY
2021/10/25 14:37:22 Freq=773.681250 NAC=2B0 Registration; RID=6021044 TG=955 DENY
2021/10/25 14:38:25 Freq=773.681250 NAC=2B0 Deregistration; RID=6075079
2021/10/25 14:40:01 Freq=773.681250 NAC=2B0 Registration; RID=6055056 TG=3125 DENY
2021/10/25 14:40:02 Freq=773.681250 NAC=2B0 Registration; RID=6021481 TG=939 DENY
2021/10/25 14:40:49 Freq=773.681250 NAC=2B0 Registration; RID=6021531 TG=927 DENY
2021/10/25 14:41:13 Freq=773.681250 NAC=2B0 Registration; RID=6031121 TG=959 [ (TDMA)] DENY
2021/10/25 14:42:15 Freq=773.681250 NAC=2B0 Registration; RID=6058375 TG=4083 [ (TDMA)] DENY
2021/10/25 14:42:18 Freq=773.681250 NAC=2B0 Registration; RID=6001768 TG=814 [ (TDMA)] DENY
2021/10/25 14:42:30 Freq=773.681250 NAC=2B0 Registration; RID=6000771 TG=818 [ (TDMA)] DENY
2021/10/25 14:42:41 Freq=773.681250 NAC=2B0 Registration; RID=6057154 TG=4075 DENY
2021/10/25 14:44:50 Freq=773.681250 NAC=2B0 BSI=WQMD409 Ch=769.26875
2021/10/25 14:44:51 Freq=773.681250 NAC=2B0 BSI=WQMD409 Ch=769.26875
2021/10/25 14:46:08 Freq=773.681250 NAC=2B0 Registration; RID=6002317 TG=814 [ (TDMA)] DENY
2021/10/25 14:46:53 Freq=773.681250 NAC=2B0 Registration; RID=6000867 TG=818 [ (TDMA)] DENY
2021/10/25 14:47:50 Freq=773.681250 NAC=2B0 Deregistration; RID=6021096
2021/10/25 14:52:26 Freq=773.681250 NAC=2B0 Registration; RID=6001120 TG=814 [ (TDMA)] DENY
2021/10/25 14:52:33 Freq=773.681250 NAC=2B0 Registration; RID=6055006 TG=3125 DENY
2021/10/25 14:52:50 Freq=773.681250 NAC=2B0 Registration; RID=6000844 TG=814 [ (TDMA)] DENY
2021/10/25 14:55:18 Freq=773.681250 NAC=2B0 Registration; RID=6075045 ACCEPT
2021/10/25 14:55:18 Freq=773.681250 NAC=2B0 Affiliation; RID=6075045 TG=36117 ACCEPT
2021/10/25 14:56:35 Freq=773.681250 NAC=2B0 Registration; RID=6000878 TG=814 [ (TDMA)] DENY
2021/10/25 15:02:46 Freq=773.681250 NAC=2B0 Group call; TG=36117 Ch=769.84375 Pri0
2021/10/25 15:07:29 Freq=773.681250 NAC=2B0 Registration; RID=6001100 TG=812 DENY

Regards,

-Frank C.
 
Last edited:

Stealthguy05

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Then it’s just a matter of getting used to the digital audio.
Definitely not. The radios have many ....many.... audio settings that can be tweaked. Different radios on P25PII have different sounding audio based on the settings the techs have put into the radio. Take a listen to EBRCS or SVRCS. You'll see how each department sounds slightly different. Some more nasal, some more tinny, and some who need to learn what noise-canceling settings are...
 

nokoa3116

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Definitely not. The radios have many ....many.... audio settings that can be tweaked. Different radios on P25PII have different sounding audio based on the settings the techs have put into the radio. Take a listen to EBRCS or SVRCS. You'll see how each department sounds slightly different. Some more nasal, some more tinny, and some who need to learn what noise-canceling settings are...
Still don't understand why SJFD set up their sound to be such low volume.
 

kg6nlw

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I looked, clipped, and sorted the other log I had running yesterday (10/25/2021), as it is a much larger log I won't post it here but will post the *important details*. I hope this helps those closer with SDR/SDS setups that are logging the system as well.

I was on Site 21 with the following info...Some notes: Several times is more than 15 entries, a few times is less than 15 entries. I tried to put known TG groups together and their name at the end of each line. The *ONE* commonality I noted with the SFPD TG's is 812 (SFPD A5) and 816 (SFPD A7) were still FDMA (Phase 1) TG's while everything else was TDMA (Phase 2). ALL SFPD TG's were encrypted with 14 exceptions, mostly on TG 812 (SFPD A5).

TG804, 806, 808, 810, 812, 814, 816 & 818 were all noted several dozen times (SFPD A1 to SFPD A8 Ch).
TG849 was noted a few times on the system (Interop: Public Safety Event 1 Ch).
TG851 was noted several times on the system (Interop: Public Safety Event 2 Ch).
TG927, 929, 931, 932, 943, 955, and 959 were noted several times on the system (SFFD Control, Command and Battalion Channels).
TG1018 was noted several times and encrypted (SF Sheriff Dispatch Ch).
TG1044 was noted a few times on the system (not in RRDB).
TG1063 was noted a few times on the system (Parks & Rec Ch).
TG1404 was noted several times on the system with encryption (not in RRDB).
TG1417 was noted SIX times on the system (not in RRDB).
TG1419 was mostly encrypted traffic (not in RRDB).
TG1420 was noted ONCE on the system (not in RRDB).
TG3121 was noted ONCE on the system (PW: SF Library Security 1).
TG4043 was noted ONCE on the system (PW: Real Estate 2 Ch).
TG4061 was noted several times on the system (DPW Ch).
TG4083 was noted several times on the system (DPW Ch).

A Patch Supergroup happened at 1549H with 845 (Interop: All City Event 1) & Subgroups of 927, 929 & 959 (SFFD A2, A3, & EMS DISP respectively).

Regards,

-Frank C.
 
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