Chicago Fire Department 460Mhz. P25

[KEVINWSFF819]

I don't know if this was answered, but what was CFD on before OEMC trunking? If they were in VHF or UHF why would they go to 7/800 and back to UHF?

They were on 470. But kept having interference from some out of state tv stations. Idea of 800 was to be a temporary fix while 460 got built out.

 

[p25p2nas]

They were on 470. But kept having interference from some out of state tv stations. Idea of 800 was to be a temporary fix while 460 got built out.

Ahh, thanks

 

[cubn]

I don't know if this was answered, but what was CFD on before OEMC trunking? If they were in VHF or UHF why would they go to 7/800 and back to UHF?

CFD left VHF for UHF in 2012. I remember there were some issues with unauthorized transmissions on their old system so they moved the MDC to the front of the transmissions. Maybe they were other reasons prompting going to UHF T Band P25 too like having all public safety in the same band.

Then they went to 800 mhz trunked in the last few years because they were getting T-Band interference.

 

[p25p2nas]

VHF too? I never knew that.

 

[n9ihx]

Hi Greg, we have to re-test a few places. Donnie

Hi Donnie are you guys running all phase 2 on 800 or is there still some phase 1 going on?

 

[p25p2nas]

Has CFD went back to UHF? There is more traffic than usual on CFD N and S UHF P25.

 

[werinshades]

Has CFD went back to UHF? There is more traffic than usual on CFD N and S UHF P25.

No

 

[p25p2nas]

No

do they have a set date?

 

[werinshades]

do they have a set date?

Not going back..800 trunking is primary.

 

[p25p2nas]

oh, what is UHF for? and I also hear MDC on 800 MHz, do they have an analog simulacast?

 

[werinshades]

oh, what is UHF for? and I also hear MDC on 800 MHz, do they have an analog simulacast?

No they don’t. Follow the other thread about the Chicago 800 system. I’m not going to cross post.

 

[p25p2nas]

No they don’t. Follow the other thread about the Chicago 800 system. I’m not going to cross post.

ok

 

[werinshades]

ok

As far as what you heard today, companies were heading to O’Hare for the disaster drill, and possibly were trying to find the ORD 800 Zone in the radio and landed on the old Zone. All CFD traffic was on and will remain on the 800 trunking system. This thread could be closed to avoid confusion if an administrator sees fit.