On 12/05/2007 12:41, wrote:

So far so good. But I have now upgraded to a DAB radio. What aerial
should I use for this? I presume a special DAB one.

yes e.g.

http://blake-uk.com/prod_products_aerials_abm.aspx

But can I use the
multiplexer option with that?

Plenty around, I use a blake "loft box" which multiplexes UHF+SAT TV
with FM+DAB radio

http://blake-uk.com/prod_products_pr...on_prostr.aspx

you'll need a di/triplexing faceplate at the outlet too, I might as well
keep all the links to one site!

http://blake-uk.com/prod_products_pr...on_proout.aspx

Andy Burns wrote:
On 12/05/2007 12:41, wrote:

So far so good. But I have now upgraded to a DAB radio. What aerial
should I use for this? I presume a special DAB one.

yes e.g.

http://blake-uk.com/prod_products_aerials_abm.aspx

But can I use the
multiplexer option with that?

Plenty around, I use a blake "loft box" which multiplexes UHF+SAT TV
with FM+DAB radio

http://blake-uk.com/prod_products_pr...on_prostr.aspx

you'll need a di/triplexing faceplate at the outlet too, I might as well
keep all the links to one site!

Actually really you don't.

The input sage of what you plug in makes a pretty good demux in itself.

I've got simple paralelled sockets running off muxed FM/TV feeds from
the dis amp, and no problems at all to date.

Sure its a bit of an impedance mismatch, but the signal is high enough
after the amp to make this a non issue.


http://blake-uk.com/prod_products_pr...on_proout.aspx

In article ,
The Natural Philosopher wrote:
Actually really you don't.

The input sage of what you plug in makes a pretty good demux in itself.

I've got simple paralelled sockets running off muxed FM/TV feeds from
the dis amp, and no problems at all to date.

You may get away with it, but in strong signal areas adding the rubbish
signals from the 'wrong' aerial may cause problems and should be avoided.
But far better to keep them separate anyway.

--
*I finally got my head together, now my body is falling apart.

Dave Plowman London SW
To e-mail, change noise into sound.

On 12/05/2007 16:55, Dave Plowman (News) wrote:

You may get away with it, but in strong signal areas adding the rubbish
signals from the 'wrong' aerial may cause problems and should be avoided.
But far better to keep them separate anyway.

Where possible, but the OP was keen to avoid laying new cables.

In article ,
Andy Burns wrote:
You may get away with it, but in strong signal areas adding the
rubbish signals from the 'wrong' aerial may cause problems and should
be avoided. But far better to keep them separate anyway.

Where possible, but the OP was keen to avoid laying new cables.

Indeed. However in this strong TV signal area I found diplexing didn't
work too well at all. I had picture ghosting caused by pickup on the FM
circuit. Nor did the FM side work well. I tried the state of the art
filters (of the time) without success too. I'm sure modern satellite co-ax
would have helped but it wasn't around at the time - or at least not
readily available.

--
*In some places, C:\ is the root of all directories *

Dave Plowman London SW
To e-mail, change noise into sound.

On 2007-05-12 17:57:37 +0100, "Dave Plowman (News)"
said:

In article ,
Andy Burns wrote:
You may get away with it, but in strong signal areas adding the
rubbish signals from the 'wrong' aerial may cause problems and should
be avoided. But far better to keep them separate anyway.

Where possible, but the OP was keen to avoid laying new cables.

Indeed. However in this strong TV signal area I found diplexing didn't
work too well at all. I had picture ghosting caused by pickup on the FM
circuit. Nor did the FM side work well. I tried the state of the art
filters (of the time) without success too. I'm sure modern satellite co-ax
would have helped but it wasn't around at the time - or at least not
readily available.

I had a similar problem trying to mix the signals from two
transmittters. In the end, the solution was band pass filters for
the individual TV channels.

Dave Plowman (News) wrote:
In article ,
The Natural Philosopher wrote:
Actually really you don't.

The input sage of what you plug in makes a pretty good demux in itself.

I've got simple paralelled sockets running off muxed FM/TV feeds from
the dis amp, and no problems at all to date.

You may get away with it, but in strong signal areas adding the rubbish
signals from the 'wrong' aerial may cause problems and should be avoided.
But far better to keep them separate anyway.

well don't mux them down one cable then! All signals are weak here.