[opendtv] Re: news: F.C.C. to Open Radio Spectrum
- From: Craig Birkmaier <craig@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Fri, 7 Nov 2008 08:47:15 -0500
At 5:25 PM -0500 11/6/08, Mark A. Aitken wrote:
Besides propagation, it turns out that lo-VHF is riddled with
problems due to "sky noise" limitations. Yes, galactic noise is one
of the components in addition to man made. It turns out that the FCC
'assumptions' do not hold up in the real world. Yes, lo-VHF is good
for distance...needs a large antenna aperture, but boy does it carry!
But...figure in the real world noise factors and when compared to
the FCC planning factors, you end up being up to 16 dB (at channel
2) short on the numbers!!!
At one time I had heard that the lov-VHF band would be very useful to
emergency responders due to the ability to penetrate buildings. For
whatever reason, it appears that these spectrum users will be using
some of the recovered 700 MHz spectrum.
Would the Low VHF be useful for:
Emergency responders?
Wireless Mics?
Regards
Craig
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