PSR-500 trunked, goes to a voice ch, shows ID, full strength, but no audio?

[dizwiz]

Sometimes I get a very annoying issue with my PSR-500.

I will be monitoring a trunked system (Motorola 800 MHz analog/ digital voice) and it will go to the voice channel, show the TG ID, but no audio.

However, if I resume scan, it will pick that TG up and start decoding right away (if they are still talking).

This is not a signal strength issue either (im familiar with those) I will have full signal strengh (all bars lit up) .

This is very annoying.

Does anyone have any tips for me?

Seems to be most common right when I turn the unit on. Which is frustrating, because if something is going on (sirens, police/fire units speeding around), I will turn it on hoping to hear what is going on only to have it show TG ID, but no audio. And if I hit resume scan, they could be done talking by the time the scanner decodes!

 

[boatbod]

Typically caused by the DSP not picking up the decode cleanly due to multipath issues. On the old PRO 96 it used to result in very annoying "motorboating".

Try running with the attenuator on and see if that helps.

 

[kruser]

All my GRE made radios have always had a slight delay when first powered on before they will decode a trunked system. Even when getting a very clean control channel signal.

You can easily see this as the "T" will not start lighthing up for a couple of seconds after first powering up.

I always assumed the radio must gather some data from the datastream at power up so it know's what it is doing.

If missing voice transmissions after the radio has been powered up for some time, then what boatbod said could very well be the reason.

 

[KevinC]

Sometimes I get a very annoying issue with my PSR-500.

I will be monitoring a trunked system (Motorola 800 MHz analog/ digital voice) and it will go to the voice channel, show the TG ID, but no audio.

However, if I resume scan, it will pick that TG up and start decoding right away (if they are still talking).

This is not a signal strength issue either (im familiar with those) I will have full signal strengh (all bars lit up) .

This is very annoying.

Does anyone have any tips for me?

Seems to be most common right when I turn the unit on. Which is frustrating, because if something is going on (sirens, police/fire units speeding around), I will turn it on hoping to hear what is going on only to have it show TG ID, but no audio. And if I hit resume scan, they could be done talking by the time the scanner decodes!

Which system? This is a symptom (more or less) of a rebanded system with the incorrect or no rebanding table.

 

[dizwiz]

Which system? This is a symptom (more or less) of a rebanded system with the incorrect or no rebanding table.

Summit county - ohio.

That is a good possibility. I will check the db

 

[boatbod]

Which system? This is a symptom (more or less) of a rebanded system with the incorrect or no rebanding table.

OP says this is an intermittent problem which can be worked around by telling the scanner to resume, at which point it picks up the audio presumably on the same channel. Can't imagine that would happen if it were a rebanding table issue.

 

[dcr_inc]

Same issue here in Maryland.. Harford County re banded their digital 3600 baud system and I have the same issue here.. Stops on a VC, Get ID but no voice.. I have the re banded table in the scanner.. My Pro 2096 works Great with the same trunked table in it.. Both are side by side with the stock antennas.. Could it be the AGC causing the issue?

 

[dcr_inc]

It appears I have solved my issue...In Win500 there is a box labeled "Trunking Tables".. It is BELOW the System Frequencies / Trunking Tables / Fleet Map buttons.. It defaults to " Default".. I moved it to "Custom" and all of my no receive issues disappeared..
If you watch your display window when the no receive is happening, you will see the scanner trying to go to the OLD 860 frequency, Even with the rebanded trunk table selected..
I actually LIKE this scanner again !!

 

[wingmaker]

It appears I have solved my issue...In Win500 there is a box labeled "Trunking Tables".. It is BELOW the System Frequencies / Trunking Tables / Fleet Map buttons.. It defaults to " Default".. I moved it to "Custom" and all of my no receive issues disappeared..
If you watch your display window when the no receive is happening, you will see the scanner trying to go to the OLD 860 frequency, Even with the rebanded trunk table selected..
I actually LIKE this scanner again !!

Thats what I was thinking it was, alot of people have that problem, but I was beat to the punch. Glad you got it working. Usually freq #s in the lower 860s like 861, 862, 863 that is when you know the scanner isnt telling it to go to the right freq.

Which system? This is a symptom (more or less) of a rebanded system with the incorrect or no rebanding table.

This one beat me to the punch
LOVE AND BLESSINGS

 

[dizwiz]

That's all I gotta do?

That's simple. I use win500 to program my scanner. I wanna try that. I will post back.

Thanks!

 

[wingmaker]

That's all I gotta do?

That's simple. I use win500 to program my scanner. I wanna try that. I will post back.

Thanks!

Yeah, hopefully you get yours working right also. GOOD LUCK dizwiz! LOVE AND BLESSINGS

 

[dizwiz]

I just tried this (setting trunking tables) setting to custom vs. default.

First try and it didnt work anymore. Im assuming there must be something set in the trunking tables when using a setting other than default.

This is on summit county ohio system. An analog CC / mot 800/900 digital voice system.

OHIO MARCS didnt work either. (again analog CC / mot 800/900 digital voice system).

My options for trunking tables are:

default
splinter
custom.

When I tried again, I went into the trunking tables options and selected 800 MHZ standard band plan and it started working.

Im assuming that if the RR DB has the disclaimer 'one or more sites have gone through the rebanding process', then I want to select the 800 Mhz - rebanded option for that system that Im trying to monitor.

We will see if this fixes everything (the occasional pause on TG and no audio ) issue.

Thanks

 

[wingmaker]

I just tried this (setting trunking tables) setting to custom vs. default.

First try and it didnt work anymore. Im assuming there must be something set in the trunking tables when using a setting other than default.

This is on summit county ohio system. An analog CC / mot 800/900 digital voice system.

OHIO MARCS didnt work either. (again analog CC / mot 800/900 digital voice system).

My options for trunking tables are:

default
splinter
custom.

When I tried again, I went into the trunking tables options and selected 800 MHZ standard band plan and it started working.

Im assuming that if the RR DB has the disclaimer 'one or more sites have gone through the rebanding process', then I want to select the 800 Mhz - rebanded option for that system that Im trying to monitor.

We will see if this fixes everything (the occasional pause on TG and no audio ) issue.

Thanks

When you get on Custom press Select, once in put the 1st table save then the 2nd and save you should be all good.

With the Ohio system you would put all 7 tables, so that you will be good for now and when they reband, and after they reband you go in take all table out besides first 2 tables( if you want to dont have to) and you will be all good

You will need to edit the TSYS(s) for the system that you have programmed, and go down to the Custom Tables setting:

Enter the values below.

Lo Chan, Hi Chan, Offset, Base Freq, Step
0, 439, 0, 851.012500, 25.000
440, 559, 440, 851.025000, 25.000
560, 719, 560, 865.012500, 25.000
720, 759, 720, 866.000000, 25.000
815, 831, 815, 867.000000, 25.000
958, 958, 958, 868.975000, 25.000
961, 1022, 961, 867.425000, 25.000

Enter the first 2 in the Custom T-Table section if rebanded, if not rebanded (as in the Ohio System) you can use the Standard/Default Tables or use all 7 tables from above and it will work now and when the reband, but as I said abover you can take all table out besides first 2 after they reband

LOVE AND BLESSINGS

 

[dizwiz]

OK I got it figured out and all works better now

Win500 had where I could select a custom table and then select the parameters whether it was an 800 Mhz, 800 MHz rebanded, 700 Mhz, P25, etc. ....

thanks.

Major improvement in scanning performance. This is huge. thanks again. I dont miss stuff anymore.

 

[KevinC]

OK I got it figured out and all works better now

Win500 had where I could select a custom table and then select the parameters whether it was an 800 Mhz, 800 MHz rebanded, 700 Mhz, P25, etc. ....

thanks.

Major improvement in scanning performance. This is huge. thanks again. I dont miss stuff anymore.

Good deal! Glad you got it going.

 

[wingmaker]

OK I got it figured out and all works better now

Win500 had where I could select a custom table and then select the parameters whether it was an 800 Mhz, 800 MHz rebanded, 700 Mhz, P25, etc. ....

thanks.

Major improvement in scanning performance. This is huge. thanks again. I dont miss stuff anymore.

Sweet Man, glad you got it. Happy Scanning LOVE AND BLESSINGS

 

[dizwiz]

OK... I want to make sure I have this down 100%.

Heres what my screenshot (of WIN500) shows me for 800 MHZ Standard (not re-banded) trunking settings (MOT 800/900).

heres what it shows me for 800 MHZ rebanded trunking settings for a MOT 800/900 system.

Are these the exact same settings you gave me in the above post?

It seems like I noticed some differences (most stuff was the same, just there was a line or two that may be difference).

Any help is appreciated!

 

[wingmaker]

OK... I want to make sure I have this down 100%.

Heres what my screenshot (of WIN500) shows me for 800 MHZ Standard (not re-banded) trunking settings (MOT 800/900).

heres what it shows me for 800 MHZ rebanded trunking settings for a MOT 800/900 system.

Are these the exact same settings you gave me in the above post?

It seems like I noticed some differences (most stuff was the same, just there was a line or two that may be difference).

Any help is appreciated!

No they are not exactly the same, The Standard one is just factory, like you would use if a system is (NonRebanded) still in the 860's mhz and above, or you can use the bottom one that you posted it will work for Rebanded and Non Rebanded it doesnt matter. The difference is this..

Lo Chan, Hi Chan, Offset, Base Freq, Step
0, 439, 0, 851.012500, 25.000
440, 559, 440, 851.025000, 25.000
560, 719, 560, 865.012500, 25.000

The third table is missing on the one you show, but this is because they put 0 LO CH TO 719 HI CH instead of the above so it covers the First Table and the 3rd Table it combines them together, no need for the 3rd line or 1st line in yours because they put the 2nd line first and combined the 1st and 3rd Lines together, but all in all either way will work, from my expierence with My buddies pro 197 and my psr 310 work with the ones I put above on the 8th perfectly fine and really if your system is Rebanded you can just use The First 2...

Lo Chan, Hi Chan, Offset, Base Freq, Step
0, 439, 0, 851.012500, 25.000
440, 559, 440, 851.025000, 25.000

witch is what I got in my psr 310 now and what my buddy gots in his Pro 197, but before that when Rebanding hadnt happened yet here in Indiana we had the 7 Tables, what I put above a few posts ago, I just removed all but the First 2 because the rest were not needed no more since Rebanding.

You can also put it this way...
Lo Chan, Hi Chan, Offset, Base Freq, Step
440, 559, 440, 851.025000, 25.000
0, 719, 0, 851.012500, 25.000

In my expierence it doesnt matter, this is whatever floats your boat kinda thing, there is no wrong or right in this situation unless you put the Standard Table when its rebanded or if you use none of the Tables I posted or the Rebanding Table you posted then it wont work, THEY HAVE GOTTA BE the one you posted above as Rebanded or the 2 I put above in this post, or the 7 table one from a post above from the 8th will work if it is Rebanded. The 7 Table one will work whether rebanded or not and so will your rebanded one you posted above it will work rebanded or not. I think that the 7 Line Table from the 8th that I posted is called a nonconflicting Channel Table if I remember right. All in all its whatever floats your boat

What I dont understand with your Tables ( not saying there wrong, because there right and will work just as good as the ones I've posted) is why the Offset is 0 for all but 2 in your above and not going from the Lowest Channel # from the Table for the Offset.

To answer you, its all good you can put the Rebanded Table for both your systems if you want, or for the one that has Rebanded you can use the 2 Table ones from above in this post, but only if it is Rebanded Hopefully this will sort it out for you, all in all Your All Good
LOVE AND BLESSINGS

 

[RKG]

OP says this is an intermittent problem which can be worked around by telling the scanner to resume, at which point it picks up the audio presumably on the same channel. Can't imagine that would happen if it were a rebanding table issue.

Actually it might, if in the process the trunked system switched from a voice channel requiring the rebanded table to one that does not.

Remember that most of the available voice channels have the same integer channel number before and after rebanding.

 

[dantheman31901]

I'm having the same issues described above. I've tried suggested edits above and still having an issue. I live in Portage county and I'm trying to monitor the sheriff's office on their new marcs system. I have a PSR-500 and if the traffic isn't broken the scanner stops and acts like it wants to let traffic go but nothing happens. I have tried moving the scanner to different parts of the house and tried a 800mhz antenna on the unit as well with the same results. Anyone have any suggestions?