Today on database page for my county, I was looking at the frequencies for VCFD and they added a proposed radio frequency section. They are currently on the FM mode and these new ones show they are on the FMN mode. Does anybody know what this means?
Ventura County FD radio changes
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FMN = Narrow band FM
There is a FCC mandate that all agencies by 2013 transition to narrower 12.5kHz step spacing from current 25kHz.
You can read more about narrow banding here:
Narrowbanding
Also for reference there a thread already about the overall Venture changed here:
http://forums.radioreference.com/ca...forum/211036-ventura-county-fire-changes.html
There is a FCC mandate that all agencies by 2013 transition to narrower 12.5kHz step spacing from current 25kHz.
You can read more about narrow banding here:
Narrowbanding
Also for reference there a thread already about the overall Venture changed here:
http://forums.radioreference.com/ca...forum/211036-ventura-county-fire-changes.html
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