Ho to filter out Bilsdale?

Hi

Living midway between Emley Moor and Bilsdale I have my TV aerial
pointed to Emley Moor, but every time I scan for channels my Sony TV
seems to prefer to pick up Bilsdale first and then stuffs all the Emley
Moor output in the channel number range 800-900.

I would like to filter out Bilsdale, auto scan, remove the filter then
manually add the small number of Bilsdale channels I would like to view.

Is there a suitable device that I can 'plug in' between the wall outlet
and TV input to filter out the Bilsdale transmissions?

RS, Farnell or CPC part nos would be a bonus!

--
Regards
Barry

"Barry" wrote in message
...
Hi

Living midway between Emley Moor and Bilsdale I have my TV aerial
pointed to Emley Moor, but every time I scan for channels my Sony TV
seems to prefer to pick up Bilsdale first and then stuffs all the
Emley Moor output in the channel number range 800-900.

I would like to filter out Bilsdale, auto scan, remove the filter then
manually add the small number of Bilsdale channels I would like to
view.

Is there a suitable device that I can 'plug in' between the wall
outlet and TV input to filter out the Bilsdale transmissions?

RS, Farnell or CPC part nos would be a bonus!

--
Regards
Barry


Doesn't your Sony provide the ability to put the channels in the order
you want them?

Otherwise if you work by direct number entry you've only got to remember
three!


--
Woody

harrogate three at ntlworld dot com

I have a similar problem here, Barry, with Winter Hill channels coming
in during periods of high pressure and/or sporadic-E propagation.

I find the answer to be to insert an attenuator in the aerial lead while
the scan is being done, and then to remove it for normal viewing. At my
location, Emley Moor is the stronger but at times Winter Hill can cause
a problem. In my case I find that an 18dB attenuator does the trick,
but you might need a higher attenuation if Bilsdale is not much weaker
than Emley Moor.

David

In a recent message, Barry wrote ...
Hi

Living midway between Emley Moor and Bilsdale I have my TV aerial
pointed to Emley Moor, but every time I scan for channels my Sony TV
seems to prefer to pick up Bilsdale first and then stuffs all the Emley
Moor output in the channel number range 800-900.

I would like to filter out Bilsdale, auto scan, remove the filter then
manually add the small number of Bilsdale channels I would like to view.

Is there a suitable device that I can 'plug in' between the wall outlet
and TV input to filter out the Bilsdale transmissions?

RS, Farnell or CPC part nos would be a bonus!


--
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| David M Pratt, Kippax, Leeds, UK |
| http://www.g4dmp.co.uk |
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"Barry" wrote in message
...
Hi

Living midway between Emley Moor and Bilsdale I have my TV aerial pointed
to Emley Moor, but every time I scan for channels my Sony TV seems to
prefer to pick up Bilsdale first and then stuffs all the Emley Moor output
in the channel number range 800-900.

I would like to filter out Bilsdale, auto scan, remove the filter then
manually add the small number of Bilsdale channels I would like to view.

Is there a suitable device that I can 'plug in' between the wall outlet
and TV input to filter out the Bilsdale transmissions?

RS, Farnell or CPC part nos would be a bonus!

You can filter out five of the Bilsdale muxes with a simple Group B bandpass
filter. Can't remember the model number but if you ask for a Maxview Group B
bandpass filter that should find it. Alternatively use an A to B+C/D
diplexer and connect via the B+C/D port only (In theory you need to put a
75ohm res across the Group A input). These options are not perfect, and the
rejection of Bilsdale ch34 will only be perhaps 9dB. A better way is to use
a filter designed to pass Emley Moor signals only. The item is a Taylor
TCFL5D (Emley Moor) with one common input. I'll send you one for £110 incl
carriage and VAT if you like. Trade they are about £77 plus tax I think.

Even the TCFL won't do anything to remove Bilsdale mux D, which is adjacent
to an Emley mux. To do that you'd need to spend about £700.

Bill

Bill Wright wrote:

You can filter out five of the Bilsdale muxes with a simple Group B bandpass
filter. Can't remember the model number but if you ask for a Maxview Group B
bandpass filter that should find it. Alternatively use an A to B+C/D
diplexer and connect via the B+C/D port only (In theory you need to put a
75ohm res across the Group A input). These options are not perfect, and the
rejection of Bilsdale ch34 will only be perhaps 9dB. A better way is to use
a filter designed to pass Emley Moor signals only. The item is a Taylor
TCFL5D (Emley Moor) with one common input. I'll send you one for £110 incl
carriage and VAT if you like. Trade they are about £77 plus tax I think.

Even the TCFL won't do anything to remove Bilsdale mux D, which is adjacent
to an Emley mux. To do that you'd need to spend about £700.

For a tenner I'll give the Maxview a go, with two 'F' connectors I can
plug it in in the loft to the existing connector. I knew that F
connector would come in useful one day!

Thank you Bill for the information, it's very useful having a venerable
old sage on tap!

--
Regards
Barry

On Sun, 21 Sep 2008 13:11:16 +0100, Barry wrote:

Hi

Living midway between Emley Moor and Bilsdale I have my TV aerial
pointed to Emley Moor, but every time I scan for channels my Sony TV
seems to prefer to pick up Bilsdale first and then stuffs all the Emley
Moor output in the channel number range 800-900.

Does the TV tell you the channel numbers it's tuning to as it does the
scan?

In the past, I've got round problems like this by just un-plugging the
aerial lead when the box tells me it's about to tune to one of the
offending muxes, then plugging it back in for the muxes I wanted.

Cheers,

Colin.

Colin Stamp wrote:

Living midway between Emley Moor and Bilsdale I have my TV aerial
pointed to Emley Moor, but every time I scan for channels my Sony TV
seems to prefer to pick up Bilsdale first and then stuffs all the Emley
Moor output in the channel number range 800-900.

Does the TV tell you the channel numbers it's tuning to as it does the
scan?

In the past, I've got round problems like this by just un-plugging the
aerial lead when the box tells me it's about to tune to one of the
offending muxes, then plugging it back in for the muxes I wanted.

My Sony suffers from being to clever for its own good!

I've ordered a Maxview filter as suggested by Bill, worth a try for a
tenner.

--
Regards
Barry

On Sep 21, 1:11*pm, Barry wrote:

Living midway between Emley Moor and Bilsdale I have my TV aerial
pointed to Emley Moor, but every time I scan for channels my Sony TV
seems to prefer to pick up Bilsdale first and then stuffs all the Emley
Moor output in the channel number range 800-900.

I'm also midway between the two transmitters, and with an aerial
pointing strait at Emley Moor. I only ever receive one muliplex from
Bilsdale when I rescan - namely Mux B. It didn't really cause a
problem, as my STB put all of the Bilsdale channels in the 800 range.
However I started to get odd problems with my Grundig GDT2000 after
one particular software update, when radio stations became
unpredictable.

I resolve the problem by setting the modulator output channel to 24
(the same as Bilsdale's mux B), and temporarily turning on the
modulator prior to a rescan.

Since then the Grundig box has failed with a PSU problem, and I've
switched to another box that so far hasn't found Bilsdale.

"PGG" wrote in message
...
On Sep 21, 1:11 pm, Barry wrote:


I resolve the problem by setting the modulator output channel to 24
(the same as Bilsdale's mux B), and temporarily turning on the
modulator prior to a rescan.

That's a good wheeze. It might even be the way to blank out the ch42 mux. It
might do that without buggering up the Emley one on 43.

Incidentally I wonder if the OP has a good aerial looking at Emley Moor. And
how strong the two sets of signals are relatively. With the bandpass filter
in place all the Bilsdale signals should surely be weaker than all the Emley
ones, so the addition of an attenuator during tuning might just be enough to
kill that pesky ch34 signal.

Bill

On Sep 21, 3:32*pm, David Pratt wrote:
I have a similar problem here, Barry, with Winter Hill channels coming
in during periods of high pressure and/or sporadic-E propagation.

This is also a common problem for those within Winter Hill's intended
coverage area, because for some obscure reason, Mux C and D are
duplicated on CH43 and 40 respectively at low power. Many of these
half-baked, not fit-for-purpose freeview boxes simply find and store
the weak and unusable 40/43 signals.
You'll get the correct version dumped in the 800 numbers if you're
lucky, but on some boxes they're just ignored.