I see here at radio reference that this system has 5 frequencies for Ottawa County. But looking at the FCC license WNPO245 the FCC has 2 other frequencies listed. 854.8875 and 855.7625. Does anyone have any info on these? Thanks.
Ottawa County Ohio P2 System
- Thread starter diamondd
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I don't remember exactly, but when they went through rebanding a little less than ten years ago now, they moved two channels and kept the other three, because the two channels were in a band segment that was going to become the new NPSPAC segment. So those might be the old channels? I could be wrong...
Are these two active? Just because they're listed on the license doesn't guarantee they're utilized
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I have those extra 2 frequencies in both my G5 and my 996P2 and don't recall ever seeing them being used. Thinking back I've never seen them show up when I've used Proscan with the 996 logging things.
They may be using these extra frequencies for simplex/talkaround operations or just keeping them for future system expansion.
The rules for 800 MHz (90.621) allow simplex operations on any of the repeater outputs without explicitly licensing them for such use.
The rules for 800 MHz (90.621) allow simplex operations on any of the repeater outputs without explicitly licensing them for such use.
Those two frequencies were added to the license in 2017 and have an ERP of 125W vs 347W of the other five channels. They probably reduced power because of potential interference concerns with another licensee in Ann Arbor. The county did confirm that the channels were in use in a letter to the FCC in 2018.
OK, thanks. Has anyone heard anything on these? I will put them in and see. Thanks again.
It is a bit odd. As this is a Harris system, typically any channel can be used as a control channel - but not always. I'm not sure I would want to assign a lower power channel in a control channel rotation. I'm thinking they are not and are only assigned traffic when all other channels are busy, a reserve of sorts. If you had Procom96, SDRTrunk or Unitrunker and a cheap SDR, you could check control channel data to see if the frequencies are ever used or available as a control channel. In any event, it won't hurt to add them to your programming.
After reading this, I decided to let Unitrunker and Pro96Com run on this site for the past several weeks. I found that 855.7625 is used in place of 855.5375. 854.8875 was not used at all. I also noticed that both Unitrunker and Pro96Com listed 855.3875 as the control and 854.3625 as the alternate. I'm pretty sure the last time I monitored this system with either program, it listed all 5 frequencies as alternates. I did submit this change to the database.
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