[SBE] analog shut-off day

[markf10355 at aol.com]

Agreed.

The FCC is chasing many Utilities for such, Ham inteference included.

Join the crowd!

http://www.fcc.gov/eb/broadcast/interference.html

Mark Fehlig, CPBE
WA6NGC


-----Original Message-----
From: Leon D. Zetekoff, NCE <wa4zlw at backwoodswireless.net>
To: sbe member discussion mail list <sbe at sbe.org>
Sent: Mon, Jun 15, 2009 5:55 pm
Subject: Re: [SBE] analog shut-off day


Get the FCC involved. The power company is in violation. Especially now with the BPL info the ARRL dug up this is a good time (IMHO) to go for it?
?
Leon WA4ZLW?
?
* Spain Robert wrote, On 6/15/2009 3:43 PM:?

> A big problem with low band DTV is the high noise floor - and 8 vsb decoders can't deal with that. Ignition noise, arcing neon lights, cracked power line insulators, lightning are much worse at low band than high band or UHF. Problem #2 is rabbit ears - at best, they are a half wave dipole, with 0 db front to back ratio, picking up reflection from mirrors, refrigerators, etc. At worst, they are pushed all the way in, and resonant on channel 13; oriented the direction the tv sits, not towards the TV station tx. > The rural viewers in your grade B contour don't use rabbit ears - they use real antennas, that have front to back ratios, and minimum multipath. > In Casper, we had to use a channel 47 DTV translator to feed the DISH network receive point, because the receive POP was 1000' from a substation. The noise floor from that substation is so high, the s/n from our VHF DTV tx was only 16 db. The s/n from the channel 47 (10 watts into a PR-450) was 30 db.?

> We have been fighting with the utility for years, and they won't do anything. >?

> Bob Spain > Wyoming PBS >?

>?

>?

>?

>?

> -----Original Message-----?

> From: sbe-bounces at sbe.org on behalf of Gibson Prichard?

> Sent: Sun 6/14/2009 9:46 AM?

> To: sbe member discussion mail list?

> Subject: Re: [SBE] analog shut-off day?

> > WTVF Nashville moved from UHF56 digital to VHF5 12am on 6/12 and has been?

> deluged with viewer calls. Things like poor indoor antennas, no knowledge of?

> re-scanning, boxes that hold our pre-transition channel position (and won't?

> update it to the post-transition freq.) are only the tip of the iceberg. We?

> figured a move to low-band 5 would be beneficial to the distant viewers who?

> couldn't pull in 56 due to propogation issues. We had no idea the near-field?

> would be as big of a deal where we have loads of signal and are even?

> circularly-polarized.?

> We've probably had in excess of 2000 calls and not seeing any real solution?

> to what largely seems to be problems relegated to viewers less than 40 miles?

> from our tower.?

>?

> Gibson?

>?

> On Fri, Jun 12, 2009 at 9:17 AM, <chscherer at everestkc.net> wrote:?

>?

> >> Any stories of problems as stations turn off their analog transmitters? I'm?

>> not asking about the station's ceremony (if any), but rather any viewer?

>> problems? Are the predictions of unprepared viewers proving to be true??

>>?

>> 




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