Strange splitter

I was visiting in a private hospital yesterday and got looking at the
TV. First there was an unused outlet plate in the wall, the actual TV
being fed by a co-ax that emerged from the false ceiling. This ended
in a metal splitter with three F connectors. It bore the legend "2 way
splitter".

The single connector one side was marked "IN" and there was a black
line on the case round to the other side to a connector marked "OUT".
There was also a red line from "IN" round the other side to the second
connector marked "OUT". Alongside this red line, also in red, was
"Power Pass". The two outs went to the back of the set. But I could
not get behind to see what they were plugged into.

It would appear to be all analog as normal teletext is displayed.

Anyone?
--
Regards
Dave Saville

NB Remove nospam. for good email address

On 19 Oct 2007 12:13:19 GMT, "Dave Saville"
wrote:

I was visiting in a private hospital yesterday and got looking at the
TV. First there was an unused outlet plate in the wall, the actual TV
being fed by a co-ax that emerged from the false ceiling. This ended
in a metal splitter with three F connectors. It bore the legend "2 way
splitter".

The single connector one side was marked "IN" and there was a black
line on the case round to the other side to a connector marked "OUT".
There was also a red line from "IN" round the other side to the second
connector marked "OUT". Alongside this red line, also in red, was
"Power Pass". The two outs went to the back of the set. But I could
not get behind to see what they were plugged into.

It would appear to be all analog as normal teletext is displayed.

Anyone?

Sounds like one of these:-

http://www.maplin.co.uk/Module.aspx?...er&doy=19 m10

They're generally much better than the cheapo plastic ones with
Belling-Lee connectors.

The ones with one DC pass are intended for satellite stuff. The idea
is to avoid shorting the LNB power supplies of the two receivers
together. They work fine for terrestrial too though. No idea why an
analogue TV would need two feeds. Perhaps one went through the wall to
another TV in the next room.

Cheers,

Colin.

On Fri, 19 Oct 2007 16:07:06 UTC, Colin Stamp
wrote:

On 19 Oct 2007 12:13:19 GMT, "Dave Saville"
wrote:

I was visiting in a private hospital yesterday and got looking at the
TV. First there was an unused outlet plate in the wall, the actual TV
being fed by a co-ax that emerged from the false ceiling. This ended
in a metal splitter with three F connectors. It bore the legend "2 way
splitter".

The single connector one side was marked "IN" and there was a black
line on the case round to the other side to a connector marked "OUT".
There was also a red line from "IN" round the other side to the second
connector marked "OUT". Alongside this red line, also in red, was
"Power Pass". The two outs went to the back of the set. But I could
not get behind to see what they were plugged into.

It would appear to be all analog as normal teletext is displayed.

Anyone?

Sounds like one of these:-

http://www.maplin.co.uk/Module.aspx?...er&doy=19 m10

They're generally much better than the cheapo plastic ones with
Belling-Lee connectors.

The ones with one DC pass are intended for satellite stuff. The idea
is to avoid shorting the LNB power supplies of the two receivers
together. They work fine for terrestrial too though. No idea why an
analogue TV would need two feeds. Perhaps one went through the wall to
another TV in the next room.

No - they are both into the same set. One of them also seemed to have
an attenuator on it - from memory the not red one.
--
Regards
Dave Saville

NB Remove nospam. for good email address

On 19 Oct 2007 12:13:19 GMT, "Dave Saville"
wrote:

I was visiting in a private hospital yesterday and got looking at the
TV. First there was an unused outlet plate in the wall, the actual TV
being fed by a co-ax that emerged from the false ceiling. This ended
in a metal splitter with three F connectors. It bore the legend "2 way
splitter".

The single connector one side was marked "IN" and there was a black
line on the case round to the other side to a connector marked "OUT".
There was also a red line from "IN" round the other side to the second
connector marked "OUT". Alongside this red line, also in red, was
"Power Pass". The two outs went to the back of the set. But I could
not get behind to see what they were plugged into.

It would appear to be all analog as normal teletext is displayed.

Anyone?

Pretty much a standard, but high quality, splitter. The words 'power
pass'means that it allows a voltage through it to power a masthead
amp.

Marky P.

On 19 Oct 2007 16:41:50 GMT, "Dave Saville"
wrote:

No - they are both into the same set. One of them also seemed to have
an attenuator on it - from memory the not red one.

Perhaps it's some kind of dedicated "hotel" set with separate inputs
for off-air and in-house channels.

Cheers,

Colin.

"Dave Saville" wrote in message
news:[email protected]
I was visiting in a private hospital yesterday and got looking at the
TV. First there was an unused outlet plate in the wall, the actual TV
being fed by a co-ax that emerged from the false ceiling. This ended
in a metal splitter with three F connectors. It bore the legend "2 way
splitter".

The single connector one side was marked "IN" and there was a black
line on the case round to the other side to a connector marked "OUT".
There was also a red line from "IN" round the other side to the second
connector marked "OUT". Alongside this red line, also in red, was
"Power Pass". The two outs went to the back of the set. But I could
not get behind to see what they were plugged into.

It would appear to be all analog as normal teletext is displayed.

Anyone?

The splitter is a standard inductive one with DC pass to one leg. The DC
pass is most likely irrelvant. The splitter will feed (a) the aerial input
of the telly, and (b) the RF socket of the interactive module. This method
of achieving interactivity uses 40 to 150MHz to send data back through the
RF system to the server. It's done as a retrofit to avoid running CAT5 all
over the place. The trouble is it doesn't work. The return signals get lost
and the module generates UHF noise to the extend that normal reception is
affected. Total bag of ****e. Early this year I was asked to do the RF for a
big new system where they were going to use it, so I told them to bugger
off. It always ends with the interactive men blaming the RF system, and I
can't be doing with it. If they would rather install a horrible compromise
like that just to save a few drums of CAT5 they'll have to manage without my
help.

Bill

Colin Stamp wrote:
On 19 Oct 2007 16:41:50 GMT, "Dave Saville"
wrote:

No - they are both into the same set. One of them also seemed to have
an attenuator on it - from memory the not red one.

Perhaps it's some kind of dedicated "hotel" set with separate inputs
for off-air and in-house channels.

It's for the ECG display ...

--
Adrian C

On 19 Oct, 13:13, "Dave Saville" wrote:
I was visiting in a private hospital yesterday and got looking at the
TV. First there was an unused outlet plate in the wall, the actual TV
being fed by a co-ax that emerged from the false ceiling. This ended
in a metal splitter with three F connectors. It bore the legend "2 way
splitter".

The single connector one side was marked "IN" and there was a black
line on the case round to the other side to a connector marked "OUT".
There was also a red line from "IN" round the other side to the second
connector marked "OUT". Alongside this red line, also in red, was
"Power Pass". The two outs went to the back of the set. But I could
not get behind to see what they were plugged into.

It would appear to be all analog as normal teletext is displayed.

Anyone?
--
Regards
Dave Saville

NB Remove nospam. for good email address

Hi,

no idea where your second output is going.Through a wall to another
set perhaps? The 2 connectors with the red line between them let
power pass so a mast head amp can be used. The one with the black line
is isolated (at DC) so power cant get to the antenna socket at the
second set.

Allan

On Fri, 19 Oct 2007 17:58:18 UTC, "Bill Wright"
wrote:

The splitter is a standard inductive one with DC pass to one leg. The DC
pass is most likely irrelvant. The splitter will feed (a) the aerial input
of the telly, and (b) the RF socket of the interactive module. This method
of achieving interactivity uses 40 to 150MHz to send data back through the
RF system to the server. It's done as a retrofit to avoid running CAT5 all
over the place. The trouble is it doesn't work. The return signals get lost
and the module generates UHF noise to the extend that normal reception is
affected. Total bag of ****e. Early this year I was asked to do the RF for a
big new system where they were going to use it, so I told them to bugger
off. It always ends with the interactive men blaming the RF system, and I
can't be doing with it. If they would rather install a horrible compromise
like that just to save a few drums of CAT5 they'll have to manage without my
help.

Thanks Bill - makes sense, there is some half baked interactive text
that appears every so often :-)
--
Regards
Dave Saville

NB Remove nospam. for good email address

"Dave Saville" wrote in message
news:[email protected]
On Fri, 19 Oct 2007 17:58:18 UTC, "Bill Wright"
wrote:

The splitter is a standard inductive one with DC pass to one leg. The DC
pass is most likely irrelvant. The splitter will feed (a) the aerial
input
of the telly, and (b) the RF socket of the interactive module. This
method
of achieving interactivity uses 40 to 150MHz to send data back through
the
RF system to the server. It's done as a retrofit to avoid running CAT5
all
over the place. The trouble is it doesn't work. The return signals get
lost
and the module generates UHF noise to the extend that normal reception is
affected. Total bag of ****e. Early this year I was asked to do the RF
for a
big new system where they were going to use it, so I told them to bugger
off. It always ends with the interactive men blaming the RF system, and I
can't be doing with it. If they would rather install a horrible
compromise
like that just to save a few drums of CAT5 they'll have to manage without
my
help.

Thanks Bill - makes sense, there is some half baked interactive text
that appears every so often :-)

That sounds about right. I hate those systems. They snarl up my lovely clean
RF. I had to throw a girly fit at one hotel.

Bill