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- From: mcovingt@athena.cs.uga.edu (Michael A. Covington)
- Newsgroups: sci.electronics
- Subject: Re: TV xmission by VHF radio?
- Summary: No; it's a matter of bandwidth.
- Message-ID: <1992Aug29.212553.10516@athena.cs.uga.edu>
- Date: 29 Aug 92 21:25:53 GMT
- References: <1992Aug29.192830.844@ddsw1.mcs.com>
- Organization: University of Georgia, Athens
- Lines: 22
-
- In article <1992Aug29.192830.844@ddsw1.mcs.com> whos@ddsw1.mcs.com (Ben Feen) writes:
- >Here's a scenario:
- >A VCR's Video line out is connected to the mic input of a VHF radio xmitter.
- >A short distance away, a scanner has its earphone output connected to a VCR's
- >video input.
- >
- >Would this work, and if not, why not?
-
- No; inadequate bandwidth. The frequency ranges needed for various kinds
- of signals are:
- Sound (telephone quality) 300 Hz to 3000 Hz
- Sound (high fidelity) 20 Hz to 20,000 Hz
- Television (low quality) 10 Hz to 2,000,000 Hz (2 MHz)
- Television (US broadcast) 10 Hz to 6,000,000 Hz (6 MHz)
- Thinwire Ethernet something low to 10,000,000 Hz (I think)
-
- Now you know what bandwidth means: it's the width of the band of frequencies
- that must be passed in order to reproduce a signal faithfully.
- --
- + Michael Covington - Artificial Intelligence Programs - U of Georgia - USA
- + Unless otherwise noted, these are private opinions, not official statements.
- + VOTE NO GEORGIA LOTTERY - we need not imitate mistakes of other states.
-