CBN/Regent University-Virginia Beach

[mdozier9]

Regent University switched over from an LTR system to a P25 trunked system {sharing Chesapeake's P25 system} several years ago. As part of the Chesapeake OpenMhz recorder (https://openmhz.com/system/chesva?filter-type=group&filter-code=599344373d540d0100e47b66) their calls always sound like they are using a low-quality codec. The audio is certainly ineligible, but from a telephony MOS score perspective, I would rate it low due to the muffling. I'm not sure if there is some other codec that should be used for their system that is different from the standard decoder in the OP25 libraries. My theory is that the audio bandwidth of the decoder is too narrow for their codec. Does anyone have insight into what radios they are using, and why the difference in audio quality from other P25 users on the same system?

 

[maus92]

I have no direct knowledge, but RU could be using different subscribers than other users, different speaker mikes, etc. Interesting though for an entire class of user sounding different.

 

[rogress]

CBN talkgroups are the only talkgroups on that system that are P25 phase 2. I suspect you are right, openmhz doesn't do a good job with phase 2. They sound fine on my Unication receiver.