[opendtv] Re: News: Broadcasters File "Emergency Action" To Delay White Spaces Vote
- From: Richard Hollandsworth <holl_ands@xxxxxxxxx>
- To: opendtv@xxxxxxxxxxxxx
- Date: Mon, 20 Oct 2008 15:52:32 -0700 (PDT)
Please reread FCC OET Report FCC/OET 07-TR-1005 (it's only 28 pgs long):
http://www.fcc.gov/oet/info/documents/
Verizon FIOS cable feed was nearly new, quad-shielded RG-6 taken direct from
garage and also inside a house...plus a townhome.
EMC was noted as being coupled directly to LCDs under test, vice the cable.
EMI was in ballpark of 5-10+ dBm EIRP.
That means WSD EIRP would need to be much less than 10 mW to prevent EMI,
rather than 40-100 mW
proposed for customer devices.
I would also be curious to see tests run on DTVs with a lot less metal in them,
such as RPTVs, plastic case DTVs,
PC tuners and unshielded USB Sticks. They will probably find acceptable EIPR
levels are much lower....
holl_ands
==================================================
--- On Mon, 10/20/08, Craig Birkmaier <craig@xxxxxxxxx> wrote:
From: Craig Birkmaier <craig@xxxxxxxxx>
Subject: [opendtv] Re: News: Broadcasters File "Emergency Action" To Delay
White Spaces Vote
To: opendtv@xxxxxxxxxxxxx
Date: Monday, October 20, 2008, 2:48 PM
Cable has little to worry about. The primary source of potential
interference is IMPROPERLY installed cable devices. There is little
reason to be concerned about interference if your residential cable
"system" is properly installed (proper grounding, good splitters,
good connectors.
If you do experience problems, start by finding the areas in YOUR
system that are not properly installed. It just might be an
un-terminated cable that is acting as an antenna.
Craig
At 4:35 PM -0400 10/20/08, Manfredi, Albert E wrote:
>Cliff Benham wrote:
>
>> The bottom line here is that the FCC, under pressure from the cable,
>> fiber and satellite congloms wants to completely undermine and stop
>> all free analog and digital over the air broadcasting.
>
>But this will backfire on cable and DBS, because the flaws are so
>blatant as to affect them too.
>
>In principle, cable companies could convert to all digital, then go into
>each subscriber's home and upgrade, cinch down, whatever, their RF
>plants. That would go a long way to solve *their* problems. But that
>costs them. This time, the NCTA might help push back.
>
>Fiber, btw, is no different. FiOS is still coax to TVs in the home. Just
>like cable. Same freqs.
>
>Bert
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