OT(?) : DAB Digital Radio reception

I can get good DAB Digital Radio reception on various mains and battery
powered receivers when upstairs in my house. They show full signal.

Downstairs however, zilch. Not a burble.

The set I'm interested in has a telescopic aerial connected to the body
of the radio with a little screw.

Is there any better aerial I can get which would attach to this screw
fixing for the swivelling telescopic aerial which would get me a better
reception and allow DAB downstairs? This is for the kitchen window sill
so something strung around the window frame, I'm thinking of...

Thanks and sorry if DAB Digital Radio is off topic here, couldn't find a
better matching group.

Gary

"Gary" wrote in message
...
I can get good DAB Digital Radio reception on various mains and battery
powered receivers when upstairs in my house. They show full signal.

Downstairs however, zilch. Not a burble.

The set I'm interested in has a telescopic aerial connected to the body of
the radio with a little screw.

Is there any better aerial I can get which would attach to this screw
fixing for the swivelling telescopic aerial which would get me a better
reception and allow DAB downstairs? This is for the kitchen window sill so
something strung around the window frame, I'm thinking of...

Thanks and sorry if DAB Digital Radio is off topic here, couldn't find a
better matching group.

Gary

When I had a similar problem with FM reception someone here suggested
wrapping a few turns of single conductor wire (I used multi-strand wire,
actually) around the telescopic aerial and leaving a long tail (in my case
about 1 metre). This is not a pretty solution but works amazingly well for
borderline FM (actually it's the radio that's borderline, not the
signal....). I have no idea if it will work for DAB but it might be worth a
try. Someone here will know.

Chas

"Gary" wrote in message
...
I can get good DAB Digital Radio reception on various mains and battery
powered receivers when upstairs in my house. They show full signal.

Downstairs however, zilch. Not a burble.

The set I'm interested in has a telescopic aerial connected to the body of
the radio with a little screw.

Is there any better aerial I can get which would attach to this screw
fixing for the swivelling telescopic aerial which would get me a better
reception and allow DAB downstairs? This is for the kitchen window sill so
something strung around the window frame, I'm thinking of...

Thanks and sorry if DAB Digital Radio is off topic here, couldn't find a
better matching group.

Gary

The whip aerial on a DAB set is likely to be efficient. To improve on it you
need an external aerial mounted high on the roof, which you can usually
connect to the screw.

Bill

"Bill Wright" wrote in message
...

"Gary" wrote in message
...
I can get good DAB Digital Radio reception on various mains and battery
powered receivers when upstairs in my house. They show full signal.

Downstairs however, zilch. Not a burble.

The set I'm interested in has a telescopic aerial connected to the body
of the radio with a little screw.

Is there any better aerial I can get which would attach to this screw
fixing for the swivelling telescopic aerial which would get me a better
reception and allow DAB downstairs? This is for the kitchen window sill
so something strung around the window frame, I'm thinking of...

Thanks and sorry if DAB Digital Radio is off topic here, couldn't find a
better matching group.

Gary

The whip aerial on a DAB set is likely to be efficient. To improve on it
you need an external aerial mounted high on the roof, which you can
usually connect to the screw.

Bill

I presume the aerial is connected to the set via a length of coax? If so,
what, if anything, do you do with the braid/screen? I always wondered.

Gary wrote:


Thanks and sorry if DAB Digital Radio is off topic here, couldn't find a
better matching group.

Try alt.radio.digital

"Chas Gill" wrote in message
...
The whip aerial on a DAB set is likely to be efficient. To improve on it
you need an external aerial mounted high on the roof, which you can
usually connect to the screw.

Bill

I presume the aerial is connected to the set via a length of coax? If so,
what, if anything, do you do with the braid/screen? I always wondered.

Well, this is where theory and practice part. Ideally the screw that holds
the whip will be the non-ground side of an unbalanced 75 ohm aerial
connection, so you will strive to connect the braid to the ground side and
thus have a good match. But of course the screw could match to God knows
what, but it isn't likely to be 75 ohm, and where do you find a ground
connection? Luckily the losses caused by mismatch are not as
earth-shattering as the purists would have us believe. Leave the braid
disconnected and see what happens.

Bill

"Bill Wright" wrote in message
news

"Chas Gill" wrote in message
...
The whip aerial on a DAB set is likely to be efficient. To
improve on it you need an external aerial mounted high on the
roof, which you can usually connect to the screw.

Bill

I presume the aerial is connected to the set via a length of
coax? If so, what, if anything, do you do with the
braid/screen? I always wondered.

Well, this is where theory and practice part. Ideally the screw
that holds the whip will be the non-ground side of an
unbalanced 75 ohm aerial connection, so you will strive to
connect the braid to the ground side and thus have a good
match. But of course the screw could match to God knows what,
but it isn't likely to be 75 ohm, and where do you find a
ground connection? Luckily the losses caused by mismatch are
not as earth-shattering as the purists would have us believe.
Leave the braid disconnected and see what happens.

Bill




Our Pure has a BNC on it, and judging by the size of the pin it
is 50R. Has something changed in the industry or are they just
'overlooking' the mismatch?



--
Woody

harrogate three at ntlworld dot com

Hi, well, why not get one of those Pure radios, they have the telescopic
mounted on a socket which can be unscrewed and a proper aerial sited
wherever you like, plugged in instead.

Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Gary" wrote in message
...
I can get good DAB Digital Radio reception on various mains and battery
powered receivers when upstairs in my house. They show full signal.

Downstairs however, zilch. Not a burble.

The set I'm interested in has a telescopic aerial connected to the body of
the radio with a little screw.

Is there any better aerial I can get which would attach to this screw
fixing for the swivelling telescopic aerial which would get me a better
reception and allow DAB downstairs? This is for the kitchen window sill so
something strung around the window frame, I'm thinking of...

Thanks and sorry if DAB Digital Radio is off topic here, couldn't find a
better matching group.

Gary

This sounds a bit like the well known deaf radio by Crown.. grin.

Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Chas Gill" wrote in message
...

"Gary" wrote in message
...
I can get good DAB Digital Radio reception on various mains and battery
powered receivers when upstairs in my house. They show full signal.

Downstairs however, zilch. Not a burble.

The set I'm interested in has a telescopic aerial connected to the body
of the radio with a little screw.

Is there any better aerial I can get which would attach to this screw
fixing for the swivelling telescopic aerial which would get me a better
reception and allow DAB downstairs? This is for the kitchen window sill
so something strung around the window frame, I'm thinking of...

Thanks and sorry if DAB Digital Radio is off topic here, couldn't find a
better matching group.

Gary

When I had a similar problem with FM reception someone here suggested
wrapping a few turns of single conductor wire (I used multi-strand wire,
actually) around the telescopic aerial and leaving a long tail (in my case
about 1 metre). This is not a pretty solution but works amazingly well
for borderline FM (actually it's the radio that's borderline, not the
signal....). I have no idea if it will work for DAB but it might be worth
a try. Someone here will know.

Chas

But where do you connect the earth or braid?
Brian

--
Brian Gaff....Note, this account does not accept Bcc: email.
graphics are great, but the blind can't hear them
Email:
__________________________________________________ __________________________________________________ __________


"Bill Wright" wrote in message
...

"Gary" wrote in message
...
I can get good DAB Digital Radio reception on various mains and battery
powered receivers when upstairs in my house. They show full signal.

Downstairs however, zilch. Not a burble.

The set I'm interested in has a telescopic aerial connected to the body
of the radio with a little screw.

Is there any better aerial I can get which would attach to this screw
fixing for the swivelling telescopic aerial which would get me a better
reception and allow DAB downstairs? This is for the kitchen window sill
so something strung around the window frame, I'm thinking of...

Thanks and sorry if DAB Digital Radio is off topic here, couldn't find a
better matching group.

Gary

The whip aerial on a DAB set is likely to be efficient. To improve on it
you need an external aerial mounted high on the roof, which you can
usually connect to the screw.

Bill