Charlotte UASI - Mecklenburg Site Programming

[tadsmith]

Based on the DB and the SDRTrunk screenshot above, I'd try this:

CH ID	Base (MHz)	Spacing (KHz)	Transmit Offset (MHz)
0​	851.00625​	6.25​	-45​

Depending on the radio/software the CH ID might be 0 or 1.

 

[trumpetman]

The band plan doesn't matter in this case because it cannot be manually entered in the Unication.

From what I've heard the radio shop is aware and looking into the issue, so everyone be patient before you run out and buy new radios.

 

[nloder17]

The band plan doesn't matter in this case because it cannot be manually entered in the Unication.

From what I've heard the radio shop is aware and looking into the issue, so everyone be patient before you run out and buy new radios.

Good to hear!

 

[cltradiolistener]

Bump - does anyone have the band plan so we can manually enter it ?

I used this to get trunk-recorder going again. "1, FDMA, 851.00625, 6.25, -45" Scanners may require a 0 instead of 1? Not sure.

 

[jasonk]

I used this to get trunk-recorder going again. "1, FDMA, 851.00625, 6.25, -45" Scanners may require a 0 instead of 1? Not sure.

Thanks - got Trunk Recordwer working also ...

 

[jplyler]

We should be good to go. I'm getting good rx again now on my G5.

 

[cltradiolistener]

They are broadcasting the bandplan/iden up again. Curious if anyone knows what the 762Mhz freq is for?
iden up tdma id 2 f 851012500 offset -45000000 spacing 12500 slots/carrier 2 iden up tdma id 3 f 762006250 offset 30000000 spacing 12500 slots/carrier 2

 

[RF-Burns]

They are broadcasting the bandplan/iden up again. Curious if anyone knows what the 762Mhz freq is for?
iden up tdma id 2 f 851012500 offset -45000000 spacing 12500 slots/carrier 2 iden up tdma id 3 f 762006250 offset 30000000 spacing 12500 slots/carrier 2

762.00625 is the standard 700Mhz band plan. Every 700Mhz site you see actually transmits a +30 offset which brings it into 800Mhz.

For example, a control channel of 772.13125 transmits on 802.13125.

Remember Stanly County which uses UASI has 700Mhz control channels.

 

[AK4FD]

It appears UASI has fixed the issue and is broadcasting the band plan again because it is working on my Unication G5 now again...

And for the record, a TDMA bandplan for manual entry is as follows:

Channel ID 1, FDMA, -45.0, 6.25 kHz, 851.00625
Channel ID 2, FDMA, +30.0, 6.25 kHz, 762.00625
Channel ID 3, TDMA, -45.0, 12.5 kHz, 851.0125
Channel ID 4, TDMA, +30.0, 12.5 kHz, 762.00625

 

[RF-Burns]

It appears UASI has fixed the issue and is broadcasting the band plan again because it is working on my Unication G5 now again...

And for the record, a TDMA bandplan for manual entry is as follows:

Channel ID 1, FDMA, -45.0, 6.25 kHz, 851.00625
Channel ID 2, FDMA, +30.0, 6.25 kHz, 762.00625
Channel ID 3, TDMA, -45.0, 12.5 kHz, 851.0125
Channel ID 4, TDMA, +30.0, 12.5 kHz, 762.00625

That's a normal P25 band plan, nothing different than any other band plan and should be in the site info page for RR Subscribers and Feed Providers. It just makes me wonder what happened to the system for it to stop transmitting the band plan.

Just north of Charlotte in the the City of Statesville, they never used to transmit a band plan on their stand alone P25 System and we couldn't use the Unications because of it. When they did updates to their station alerting system, they did it with Unication G4's and had to turn on transmitting of the band plan.

Makes you wonder how many other municipalities do this and for what reason.