Tuscaloosa County SO question

[rbryant2]

I notice that the Tusc. County Sheriff's Office is licensed for multiple transmitter sites on 159.3825 MHz. Any ideal what type of system they are using? Here in Walker County, our County Fire Dispatch system operates on 159.3900 MHz. Over the past few months, we have began having a lot of interference that sounds slightly off frequency. One can never hear voices, but rather noise that sounds like telemetry.

Thanks,
Rodney

 

[SCPD]

looking here http://www.radioreference.com/apps/db/?ctid=63. There are no listings for that frequency?. here are the ones for tusc SO

453.15000 179.9 PL 1 Fire Dispatch FM Fire Dispatch
155.61000 159.09000 WPMM643 RM 100.0 PL 1 Sheriff Main Patrol FM Law Dispatch
155.67000 WPMM643 BM 2 Sheriff Emergency FM Law Tac

 

[jrm5265]

tuscaloosa

Is that Tuscaloosa Co. Alabama, is that the County that uses Southern Linc to dispatch on, Im thinking there is a County in Alabama that the SO uses Iden (SOuthern Linc) group talk to dispatch off of

 

[LEH]

looking here http://www.radioreference.com/apps/db/?ctid=63. There are no listings for that frequency?. here are the ones for tusc SO

453.15000 179.9 PL 1 Fire Dispatch FM Fire Dispatch
155.61000 159.09000 WPMM643 RM 100.0 PL 1 Sheriff Main Patrol FM Law Dispatch
155.67000 WPMM643 BM 2 Sheriff Emergency FM Law Tac

I thought the same thing, but when you click on the license link it takes you here and there are quite a few entries for the 159.3825 freq. They are all shown as mobile or mobile repeaters.

Has anyone checked any of the atmospheric sites to see how the propagation might be for the VHF band?

 

[Randmaster]

159.3825 could possibly be a backup frequency. They have so many frequencies from their old systems, and most of those repeaters are old as well.

It sounds like it could be a backup to something... I'll try to ask a deputy about it.

 

[rbryant2]

I should have been more explicit in my original post...This frequency is not listed in the database on RR, but I found it by searching on the FCC website. Also I suspect that this is a fairly new frequency allocation, since it is a "narrow band" frequency. On the FCC website, it appears that this license was just issued last year. The license includes 120 mobiles and 5 mobile relay (i.e. repeater sites) scattered over the county. Also included on this license are several other new appearing "narrow band" frequencies, all set up with basically the same number of mobiles, multiple transmitter locations, etc. I wonder if TCSO is in the process of moving to a new APCO compliant, digital radio system. Would this account for the fax machine like noise that we are hearing?

By the way, one of the listed TCSO sites is in Windham Springs, I suspect on one of the television towers in this area. This site is less that 20 air miles from our repeater site between Parrish & Cordova. Doesn't seem like much distance for 0.0075 MHz seperation does it? Especially when you are talking about a transmitter with a licensed ERP of 100 watts.

 

[SCPD]

I should have been more explicit in my original post...This frequency is not listed in the database on RR, but I found it by searching on the FCC website. Also I suspect that this is a fairly new frequency allocation, since it is a "narrow band" frequency. On the FCC website, it appears that this license was just issued last year. The license includes 120 mobiles and 5 mobile relay (i.e. repeater sites) scattered over the county. Also included on this license are several other new appearing "narrow band" frequencies, all set up with basically the same number of mobiles, multiple transmitter locations, etc. I wonder if TCSO is in the process of moving to a new APCO compliant, digital radio system. Would this account for the fax machine like noise that we are hearing?

By the way, one of the listed TCSO sites is in Windham Springs, I suspect on one of the television towers in this area. This site is less that 20 air miles from our repeater site between Parrish & Cordova. Doesn't seem like much distance for 0.0075 MHz seperation does it? Especially when you are talking about a transmitter with a licensed ERP of 100 watts.

ok, I kinda figured that. Probably for "future use, interops or what not keep em in the radio you never know hen they may become active. Hvae a few in mine fo Elmor county.. nothing yet tho