BCD325P2/BCD996P2: Uniden BCD996P2- Stops on channels no audio

[whfpd800]

I have 3 "zones" on all 9 scanners i own. Zone 1- Analog VHF, Zone 2-Missouri MOSWIN P25, Zone 3- Missouri Kansas City MARRS.

Zone 1 & 3 work no issue on all scanners.
Zone 2 on 2 of the 9 scanners stops on channels but has no audio. I plugged another scanner in and it works fine with the antenna. I have cloned other scanners to these 2 and they still do this.
I use ProScan to program the scanners and can not find out why these 2 are doing this.

 

[ofd8001]

Is this a simulcast system/site? Garbled/no audio even though you get a good signal indication is a symptom of simulcast distortion. Just for the heck of it, try removing the antenna and see if you get audio.

 

[cg]

Assuming they are the same model radios, check the squelch setting. Since it is unaffected by programming, it could be different between radios.
Are they tuning to voice channels or sitting on the control channel?

 

[dispatch235]

If I am reading correctly all 9 scanners are 996P2's... are the 2 scanners having the issue happen to be newer production models purchased since the beginning of this year? If so there was a firmware problem in the late production 996P2's and 536HP's that caused problems in the upper part of the vhf band with not being able to decode some P25 sites (such as MOSWIN). There is a firmware update that has fixed these issues released recently that you may need to download (if they are indeed later production models).
Not to say this is your fix, but thought worth mentioning as it has fixed the problem for several of us with the MOSWIN sites decoding.

 

[whfpd800]

They are newer amazon purchases from this year.

It's not from being encrypted cause all the other scanners pick them up fine. These two are at our office and hooked to the same exterior antenna through a splitter. They both worked fine no issues then both stopped at the same time. I'm wondering if lightening didn't hit them or something.

VHF analog works fine and is picked up but MOSWIN VHF control channels are not.

 

[whfpd800]

Is this a simulcast system/site? Garbled/no audio even though you get a good signal indication is a symptom of simulcast distortion. Just for the heck of it, try removing the antenna and see if you get audio.

If i remove the antenna i get no signal and it doesn't stop on any channels.

 

[whfpd800]

Assuming they are the same model radios, check the squelch setting. Since it is unaffected by programming, it could be different between radios.
Are they tuning to voice channels or sitting on the control channel?

They are sitting on the channel when there is radio traffic but nothing comes out of the scanner. Again, Only on MOSWIN zone 2 channels.

 

[wtp]

plug in a set of computer speakers and then try...

 

[RMason]

They are newer amazon purchases from this year.

VHF analog works fine and is picked up but MOSWIN VHF control channels are not.

• What site are you listening to on MOSWIN? What is the control channel frequency?
• What is the firmware version - in particular for the 996P2's that don't have audio?

As mentioned in post #4, an issue was reported by several users on MOSWIN with new BCD996P2s. There was an issue that affected P25 decode on VHF in the frequency range of 171.2250 – 173.9875MHz with the new hardware. This was addressed in firmware by Version 1.10.02 which was released on 7/13/22.

See this page for BCD996P2 firmware updates:

BCD996P2FirmwareUpdate < unidenman4 < TWiki

info.uniden.com

SDS series, BCD536HP, and BCD996P2 received firmware updates this week - New x36 Sentinel too

SDS series, BCD536HP, and BCD996P2 all received firmware updates. There is a new x36 Sentinel out, too. http://info.uniden.com/twiki/bin/view/unidenman4/scannermanuals

forums.radioreference.com

P25 system problem with "new" 536's?

So I own two 536's that are a couple years old and have programmed several for other people locally, never had any issues....until now. A friend bought one recently and I programmed it exactly like mine (even tried using my sd cards also) but it will not a couple of sites on our P25 MOSWIN sysem...

forums.radioreference.com

P25 decode issues in the upper part of the VHF band

We are investigating a hardware or firmware issue that affects P25 decode above 171.200 MHz. (the cutoff could be lower) So far, this seems to affect only the BCD996P2 and BCD536HP, but may affect other models as well. For anyone who has the issue and is willing to help, do you have an older...

forums.radioreference.com

 

[tvengr]

Which MOSWIN site are you using? The Richmond site in Ray County site is 700 MHz. If you are using the Lawson site in Clay County, that uses VHF frequencies in the range known to be bad in new BCD996P2 scanners and is corrected by the recent firmware update.