Lakewood PS P25

[dhageman]

WMFR P25 Programing Question

I have been trying to figure out the new P25 system, most of the morning. It appears, that occasionally I am getting only the dispatch side of the conversation and then maybe a mobile response, but never together.

Has anyone broke the code to get both sides yet???

 

[lazierfan]

dhageman, you'll notice my feed has behaved in the manner you speak of.

Since the inception of my feed over three years ago I've battled this and I'm here to tell you it's not a P25 anomaly; it happened in the EDACS system as well. I have, as a test, entered each freq manually and listened to each. There are some frequencies that are stronger than others. The best I can hope for is to make the weakest freq as strong as I can. My feed consists of the Grecom psr600, a 50' run of low loss coax, and a Yagi antenna.
The psr600 has all frequencies for Mt Morrison programmed in order as it appears in the download area of RadioReference.com. The order is important so double check that. I also found the squelch needs to be completely off, counterclockwise. Even though I'm over 29 miles from Mt Morrison I get a full 5 bars consistently on all but maybe two frequencies; the two range from three to five bars at any given time.
Finally, I actually created a download that is Lakewood P25 only and run only that. Seems like a waste of hardware to have only 6-10 freq programmed and over 9980 blank, but I have backed up my other files.
Make sure you have every other scanlist locked out. Delays do occur when a radio is scanning through 10,000 channels in a serial method. I also have the control channel as a priority channel, and have to change it when Lakewood changes theirs. PITB.
Good luck!
Maybe after Lakewood's growing pains they'll bump up the power on the weaker ones.

I have been trying to figure out the new P25 system, most of the morning. It appears, that occasionally I am getting only the dispatch side of the conversation and then maybe a mobile response, but never together.

Has anyone broke the code to get both sides yet???

 

[lazierfan]

The psr600 has over 37,000 programmable objects, but can only scan 1800 in a traditional 'scan' setup, serially from channel 1 to channel 1800 before it goes back to channel 1. Thus the delay if you have them all locked-in.

 

[lazierfan]

One additional method I've tried is to increase the delay(in ms) of dispatch, Tac-2 and Tac-3; right now they're set at 7000 ms. Its a slipper slope, though, during busy times the channel would be sitting on, say, dispatch when there is traffic on a tac channel. Again, its an evolving situation over a long period of time.

 

[abqscan]

I have been trying to figure out the new P25 system, most of the morning. It appears, that occasionally I am getting only the dispatch side of the conversation and then maybe a mobile response, but never together.

Has anyone broke the code to get both sides yet???

I do not know of what code your talking about??? I've been monitoring this sytem without any problems. I hear both sides just fine all day long.

Can you provide is with what radio your using, where you are located, signal strength of the CC, and if your using any software to program your radio.

 

[utlchris]

There should be no code to break. Provided you have a P25 capable scanner and are programing in both sites as P25.

Green Mtn. 851.25000c, 851.71250c, 851.91250c, 852.22500c, 852.68750c, 852.91250c, 853.30000c, 853.53750c

Mt. Morrison 851.08750c, 851.33750c, 852.43750c, 852.75000c, 853.21250c, 854.63750c, 855.41250c, 856.61250c

I have been trying to figure out the new P25 system, most of the morning. It appears, that occasionally I am getting only the dispatch side of the conversation and then maybe a mobile response, but never together.

Has anyone broke the code to get both sides yet???

 

[greenthumb]

I've not had any problems listening to the system using PSR 600 and BCD396XT scanners, either. I've also done a lot of listening to the Lakewood PD feed and I haven't noticed any missed transmissions on it?

 

[lazierfan]

I appreciate the feedback on the OP behalf- can the folks who don't notice any problem follow the link to my feed and you will hear an example of what we are both talking about. Thanks in advance.

 

[lazierfan]

In order to make the most of this thread, I recommend listening to the radio you don't have problems with along side the feed.

 

[lazierfan]

I can send my Win500 file to anyone who is willing to help us.

 

[greenthumb]

If you're sure that your programming is correct, I would see if there are particular frequencies causing the problem.

 

[abqscan]

I can send my Win500 file to anyone who is willing to help us.

Please send it to me, or post it here. Also, do you have both sites programed into the radio, or just the Mt. Morrison site in?

 

[dougjgray]

There should be no code to break. Provided you have a P25 capable scanner and are programing in both sites as P25.

Green Mtn. 851.25000c, 851.71250c, 851.91250c, 852.22500c, 852.68750c, 852.91250c, 853.30000c, 853.53750c

Mt. Morrison 851.08750c, 851.33750c, 852.43750c, 852.75000c, 853.21250c, 854.63750c, 855.41250c, 856.61250c

DO I need to put in all channels, I put in 852.22500c and 854.6375c and did control channel only mode will I miss stuff that way? those 2 Freqs are the only ones that I found control channel data on.

 

[abqscan]

I have been only using the Mt. Morrison site to monitor the sytem.

 

[lazierfan]

Please send it to me, or post it here. Also, do you have both sites programed into the radio, or just the Mt. Morrison site in?

I only have Mt Morrison programmed in the radio. Nothing else. The file is empty except for Mt Morrison.

I have been only using the Mt. Morrison site to monitor the system.

 

[dougjgray]

DO I need to put in all channels, I put in 852.22500c and 854.6375c and did control channel only mode will I miss stuff that way? those 2 Freqs are the only ones that I found control channel data on.

I just answered my own question 852.22500 just changed to a voice channel so may need them all atleast until they get organized

 

[abqscan]

I only have Mt Morrison programmed in the radio. Nothing else. The file is empty except for Mt Morrison.

I listened to the feed for over an hour today while runing two scanners. One was parked on Dispatch, and the other was allowed to scan. The only audio that the feed missed was a delayed response from a unit in the field, and the radio scanning and landing on another active TG.

 

[rfburns]

may need them all atleast until they get organized

Over the last month the control channel has rotated thru all 8 frequencies (Mt Morrison). Some frequencies have been used for the CC many more times than others. Ch 7 and 8 had the least CC useage because they were segmented during much of the month for testing.

There is some weird behavior, but I blame it on the Pro-106. Much of the month my Pro-106 was locked on Tac 2 and I often heard the dispatch side, but not the mobiles. I was watching channel grants and could see the mobiles answering and knew by the UID it was the unit dispatch was talking to. I'll watch it more after Christmas when I'm done with system 4A16.

 

[Thayne]

I am fairly sure if they are using the Harris "flavor" of P25, that the control channel can appear on any of the channels (unlike Moto systems) so you would be wise to put them all in especially since they are few in number.

 

[greenthumb]

Wise words from Thayne here-