New Chicago OEMC Public Safety - 800 MHz P25

[werinshades]

It looks like the MDC issue is back on EMS Englewood on the TRS

Yes it is...hard to hear on your end too?

 

[ChicagoRadio736]

Yes it is...hard to hear on your end too?

The radio Audio is ok from my location downtown Chicago on the SDS200. The MDC burst seems a little louder. On my APX7000 I really hear the MDC. Kinda weird hearing MDC over P25 lol

 

[p25man123]

Could they be switching over to Motorola Consoles? Particularly utilizing the MCC software that is creating that MDC issue?

 

[werinshades]

Could they be switching over to Motorola Consoles? Particularly utilizing the MCC software that is creating that MDC issue?

I was told after I posted about Motorola/Harris consoles it's all Harris consoles down there, CFD 800 uses Harris equipment to link to the trunking system.

What this sounds like is some patch they're experimenting with and my "speculation" is it has something to do with the ISSI link issues they've been having. Unfortunately it really drops the audio level on the outbound transmissions on the consoles, and on the EMS consoles, the MDC tone is being transmitted (and I suspect received) as well. The dispatchers frequently complain that "ambulances are cutting off their signatures" so if ambulance 54 says "54 to Englewood", it must sound like "4 to Englewood". Besides all that, the EMS consoles have the audio issues more than the fire consoles.

Last night around 2000 hrs. the audio returned to it's normal level, so whatever they were doing down there is (at this time I type), not doing what they were doing down there.

 

[werinshades]

I was told after I posted about Motorola/Harris consoles it's all Harris consoles down there, CFD 800 uses Harris equipment to link to the trunking system.

What this sounds like is some patch they're experimenting with and my "speculation" is it has something to do with the ISSI link issues they've been having. Unfortunately it really drops the audio level on the outbound transmissions on the consoles, and on the EMS consoles, the MDC tone is being transmitted (and I suspect received) as well. The dispatchers frequently complain that "ambulances are cutting off their signatures" so if ambulance 54 says "54 to Englewood", it must sound like "4 to Englewood". Besides all that, the EMS consoles have the audio issues more than the fire consoles.

Last night around 2000 hrs. the audio returned to it's normal level, so whatever they were doing down there is (at this time I type), not doing what they were doing down there.

The last few weeks, they've been running on the patch (Very noticeable, lower audio levels/MDC tones). Yesterday. both Main Fire & EMS had the patch disabled (louder and clearer audio levels again), Englewood Fire & EMS still running on the patch as of this morning.

 

[Premises2972]

The last few weeks, they've been running on the patch (Very noticeable, lower audio levels/MDC tones). Yesterday. both Main Fire & EMS had the patch disabled (louder and clearer audio levels again), Englewood Fire & EMS still running on the patch as of this morning.

I heard that patch audio, it sounded pretty bad
Why do they even need a patch?

 

[werinshades]

The last few weeks, they've been running on the patch (Very noticeable, lower audio levels/MDC tones). Yesterday. both Main Fire & EMS had the patch disabled (louder and clearer audio levels again), Englewood Fire & EMS still running on the patch as of this morning.

Patch was disabled on Englewood Fire & EMS this afternoon. Hopefully Harris updated software so it no longer disconnects from the consoles . Audio sounds loud and clear.

I heard that patch audio, it sounded pretty bad
Why do they even need a patch?

CFD Harris consoles use Harris equipment to connect to the trunking system. They've been having problems with it "disconnecting" from the system at random times, so they created a workaround patch. Think of a modem rebooting.