What happened to SBS TV ?

P

Phil Allison

Guest
Hi,

a few months back, all the SBS channels disappeared from my DSE "G7659"
standard def STB. So, I rescanned the whole band = no change, so I opened
the unit and gave it a clean and service = no change.

Must be faulty tuner, I thought - no biggie as my main (flat screen) picks
up all channels fine.

Last night, a neighbour's STB went dead so I loaned them mine and apologised
for the lack of SBS. Then I pulled my spare DSE box out of storage and found
it too had no SBS despite also being rescanned.

Two faulty tuners ? That IS very fishy.

After about 30 minutes Googling, I finally found that SBS in Sydney has
moved frequency right back to VHF !!
All the previous UHF signals are now on VHF channel 7 - nominally at
184.625 MHz.

http://ozdigitaltv.com/transmitters/NSW/4-Gore-Hill-Artarmon-Willoughby

So WTF is wrong with the two DSE boxes, why can't they see the new signal ?

I had not tried the "manual tune" function until just now, cos you need to
know the frequency ( or channel number) of a transmitter to use it.

Bingo.


..... Phil
 
On 20/05/2014 5:04 PM, Phil Allison wrote:
Hi,

a few months back, all the SBS channels disappeared from my DSE "G7659"
standard def STB. So, I rescanned the whole band = no change, so I opened
the unit and gave it a clean and service = no change.

Must be faulty tuner, I thought - no biggie as my main (flat screen) picks
up all channels fine.

Last night, a neighbour's STB went dead so I loaned them mine and apologised
for the lack of SBS. Then I pulled my spare DSE box out of storage and found
it too had no SBS despite also being rescanned.

Two faulty tuners ? That IS very fishy.

After about 30 minutes Googling, I finally found that SBS in Sydney has
moved frequency right back to VHF !!
All the previous UHF signals are now on VHF channel 7 - nominally at
184.625 MHz.

http://ozdigitaltv.com/transmitters/NSW/4-Gore-Hill-Artarmon-Willoughby

So WTF is wrong with the two DSE boxes, why can't they see the new signal ?

I had not tried the "manual tune" function until just now, cos you need to
know the frequency ( or channel number) of a transmitter to use it.

Bingo.
Click to expand...

One of my PC tuners was unable to receive SBS after the change, even
though it worked fine for all the other channels, and the other tuner
(different brand) had no trouble.

Unfortunately, while trying to diagnose the problem further, I seem to
have killed the tuner while moving it to a different box (static, I
suspect), and any system that contains it won't work at all.

Your experience just supports my notion that there's indeed something
fishy about the SBS signal.

Sylvia.
 
Phil Allison wrote:
Hi,

a few months back, all the SBS channels disappeared from my DSE
"G7659" standard def STB. So, I rescanned the whole band = no change,
so I opened the unit and gave it a clean and service = no change.

Must be faulty tuner, I thought - no biggie as my main (flat screen)
picks up all channels fine.

Last night, a neighbour's STB went dead so I loaned them mine and
apologised for the lack of SBS. Then I pulled my spare DSE box out of
storage and found it too had no SBS despite also being rescanned.

Two faulty tuners ? That IS very fishy.

After about 30 minutes Googling, I finally found that SBS in Sydney
has moved frequency right back to VHF !!
All the previous UHF signals are now on VHF channel 7 - nominally at
184.625 MHz.

http://ozdigitaltv.com/transmitters/NSW/4-Gore-Hill-Artarmon-Willoughby

So WTF is wrong with the two DSE boxes, why can't they see the new
signal ?
I had not tried the "manual tune" function until just now, cos you
need to know the frequency ( or channel number) of a transmitter to
use it.
Bingo.


.... Phil
Click to expand...

Had the same problem with my PC tuner software "DV Scheduler"
(sydney.edu.au/engineering/it/~efax/DVScheduler.html)

Seems to retain old frequency information somewhere, changed from: 571500 Hz
To: 184500 Hz, works fine.
 
On 20/05/2014 5:04 PM, Phil Allison wrote:
Hi,

a few months back, all the SBS channels disappeared from my DSE "G7659"
standard def STB. So, I rescanned the whole band = no change, so I opened
the unit and gave it a clean and service = no change.

Must be faulty tuner, I thought - no biggie as my main (flat screen) picks
up all channels fine.

Last night, a neighbour's STB went dead so I loaned them mine and apologised
for the lack of SBS. Then I pulled my spare DSE box out of storage and found
it too had no SBS despite also being rescanned.

Two faulty tuners ? That IS very fishy.

After about 30 minutes Googling, I finally found that SBS in Sydney has
moved frequency right back to VHF !!
All the previous UHF signals are now on VHF channel 7 - nominally at
184.625 MHz.

http://ozdigitaltv.com/transmitters/NSW/4-Gore-Hill-Artarmon-Willoughby

So WTF is wrong with the two DSE boxes, why can't they see the new signal ?

I had not tried the "manual tune" function until just now, cos you need to
know the frequency ( or channel number) of a transmitter to use it.

Bingo.


.... Phil
Click to expand...
My Tivo gets SBS no problems, but neither of the two TVs on the same
antenna will get it.
 
On 20/05/14 17:04, Phil Allison wrote:
All the previous UHF signals are now on VHF channel 7 - nominally at
184.625 MHz.
Click to expand...

I can't help you with SBS; I had problems with ABC.

I spent four hours building a table of networks, channels, programs, and
physical tower location to do my retune, after a factory settings-reset.
In retrospect, that was overkill, but I learned some interesting things.
The attached file might not be 100% accurate (locations in particular
are ambiguous from the government site where I looked up the data) but
it might help someone.

Interestingly, though ABC's main channel is transmitted from three
towers, it's better from either of the ones that isn't just 5km from
here in Gore Hill. That transmitter is putting up only 50kW on a tower
with almost 1MW of other TV transmitters, so maybe that's the reason.
The signal is better from 50km away out past Richmond...

Clifford Heath
 
I have an LG STB, which was pretty good - it would even work with an indoor
antenna. Now it struggles with SBS using the rooftop antenna.
I suspect they have reduced power.
 
On 25/05/2014 6:45 PM, 116e32s@gmail.com wrote:
I have an LG STB, which was pretty good - it would even work with an indoor
antenna. Now it struggles with SBS using the rooftop antenna.
I suspect they have reduced power.
Click to expand...

You'd surely have to have something wrong with the antenna or feed.

Sylvia.
 
<116e32s@gmail.com>

I have an LG STB, which was pretty good - it would even work with an indoor
antenna. Now it struggles with SBS using the rooftop antenna.
I suspect they have reduced power.
Click to expand...

** Not likely.

But your antenna may have more gain at their old UHF frequency than VHF 7.


..... Phil
 
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