I have lost NJSP Trp C control feed. Found them at 852.20625. this freq not listed. anyone around here picking them up??
NJ State Police Trp C What Freq?
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robbinsj2
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NJSP Troop C system is using 860.7125 as a control today. They wouldn't be using 852.20625, that's not a valid channel in the band, but Troop C does heavily use 852.2125 as a voice channel and you're probably receiving bleed-over from that.
What scanner model do you have? Is it properly set up for trunking the system? You might have gotten 852.20625 from a band sweep or search but it shouldn't have come up in trunking mode.
Jim
What scanner model do you have? Is it properly set up for trunking the system? You might have gotten 852.20625 from a band sweep or search but it shouldn't have come up in trunking mode.
Jim
Im using a pro 97. It has been working fine for the last few weeks on the normal SP control freq, but now it seems to want to be on the off freq. i just tried 860.71250, and I get hardly any signal. Setup error you say?
robbinsj2
Member
If it was working a few weeks ago then it should still be -- as far as I know there have been no changes to the system in that time which would affect scanner settings. What are you receiving on 852.20625, voice comms or a control channel? If a control channel, does it show sysid B11E?
When you originally programmed the system, did you set it up as trunked? How did you stumble upon 852.20625? If the scanner was programmed properly a month ago and not changed then it shouldn't have ever come upon that frequency.
If you're hardly getting 860.7125 then see what you can do to improve that -- make sure the antenna is connected properly, try moving the scanner to a new location. You'll need to receive it with a fairly high decode percentage (say >70%) to trunk the system with any semblance of reliability. The Pro-97 only needs the four control channels programmed in, to program in any of the voice-only channels just slows it down and takes up memory unnecessarily.
When you originally programmed the system, did you set it up as trunked? How did you stumble upon 852.20625? If the scanner was programmed properly a month ago and not changed then it shouldn't have ever come upon that frequency.
If you're hardly getting 860.7125 then see what you can do to improve that -- make sure the antenna is connected properly, try moving the scanner to a new location. You'll need to receive it with a fairly high decode percentage (say >70%) to trunk the system with any semblance of reliability. The Pro-97 only needs the four control channels programmed in, to program in any of the voice-only channels just slows it down and takes up memory unnecessarily.
when it was working....i had no problem getting more than 70% on 860.7125, also the sys B11E. I just reset the scanner to factory settings....dumped everything and entered back the trp C controls.......still ng
Another possibility is that NJSP is using 852.2125 as an Intellirepeater (IR) control channel in the Trenton area. I don't have that in my data but these NJSP IRs are popping up all over. However it would be a bit strange if they are using a troop C simulcast voice channel in an IR configuration, unless it's turned off in the simulcast system.
robbinsj2
Member
You were receiving a control channel with sysid B11E over 852.20625? Or just 860.7125? As I asked before, what *are* you receiving over 852.20625 and how did you first find that frequency?
Maybe you're getting some localized interference on 860.7125 specifically which inhibits scanning when the control channel is there; check again when it has rotated to another channel. Or maybe something about the transmitter site which was best serving you changed temporarily or permanently, reducing your reception. When you get a chance take your -97 mobile and see how it does in different buildings or towns.
Joe: the Troop C simulcast zone is currently using 852.2125 heavily. Brainstorming further, perhaps there's an IR on the other side but all the NJSP IRs I've studied are either licensed themselves or piggybacking on channels chiefly used in a different region of the system and I have no record of NJ licensing/using 852.1875 or 852.2000 for anything.
Yes i was recieving ok on 860.7125 more than 70% and sys B11E. Since i lost it, i did put the radio in search and that is how i ended up at 852.20625. Also, the tg id's are not stable on 852.2125, almost just randomly coming up a sec or two.
I just ran out mobile near Trp C site. Still NG. I'm thinking of a possible radio problem. 400 to 512 trunking working fine.
I'm going to try to look up another trunking system near me in Hamilton Township near the same range to see if it works.
I really appriciate all the help from you. I'm a retired electronics tech amd have been away from monitoring for years. Looks like a whole lot to learn!!
I just ran out mobile near Trp C site. Still NG. I'm thinking of a possible radio problem. 400 to 512 trunking working fine.
I'm going to try to look up another trunking system near me in Hamilton Township near the same range to see if it works.
I really appriciate all the help from you. I'm a retired electronics tech amd have been away from monitoring for years. Looks like a whole lot to learn!!
OK now it makes sense. He is receiving talkgroup information on that voice frequency in conventional mode because the GRE/RS scanners display the trunking talkgroups from the low speed data on the voice channel.
Check your antenna again. I have good solid signal on the troop C control channel from Gloucester county. If not perhaps have the scanner checked, wouldn't be the 1st radio shack scanner to go deaf on a specific band but hear good on other bands.
Check out the thread i started today titled...Pro 97 860mhz band shifted 6.25 khz..
Antenna is working fine on other frequencies and also on a scanner without trunking. Definately a 6.25khz shift in the control freq. Starting to reallly look like a reciever problem, unless I'm missing something.
Id like to say thx to all that have responed so far with posible reasons
Antenna is working fine on other frequencies and also on a scanner without trunking. Definately a 6.25khz shift in the control freq. Starting to reallly look like a reciever problem, unless I'm missing something.
Id like to say thx to all that have responed so far with posible reasons
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