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KB2VXA > HDTV 12.10.11 14:33l 28 Lines 1080 Bytes #999 (0) @ WW
BID : 8107_VK6ZRT
Read: GUEST
Subj: Re: G0TEZ > V vs. H
Path: IZ3LSV<IW0QNL<IK6ZDE<VE3UIL<VK6ZRT
Sent: 111012/1309Z @:VK6ZRT.#BUN.#WA.AUS.OC #:8107 [Boyanup] $:8107_VK6ZRT
From: KB2VXA@VK6ZRT.#BUN.#WA.AUS.OC
To : HDTV@WW
Hi Ian and all,
I don't see what 6M has to do with TV other than the fact it used to be
Ch1 long since abandoned because of co-channel interference. I can't say
much about elsewhere but in North America the only thing vertical
polarization is used for is mobile communications for antenna
considerations.
Now you mentioned the local TV translator being vertical to avoid
competition with the main transmitter, no need for that here because
they're on different channels. That avoids a hodge-podge of antennas on
the roof where one will do and from an engineering standpoint eliminates
co-channel interference entirely and ther is plenty of spectrum to do it
in. As a matter of fact since the "big switch" we have plenty of "grey
channels" or unused spectrum so the FCC has reallocated it to two way
public service communications. That new 700MHz band sure is filling up
fast.
73 de Warren
Station powered by JCP&L atomic energy, operator powered by natural gas.
Message timed by NIST: 13:03 on 2011-Oct-12 GMT
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