I have a JVC DAB receiver add-on for my head unit which works reasonably
well (apart from questionable DAB coverage but that's another
matter...). It came supplied with an external aerial which can either be
stuck onto the roof and the cable routed down the side of the rear
window or mounted to the side of the boot lid.

Unfortunately it's a hideous looking thing, and I've recently bought a
new car that I don't particularly want to be sticking things to the
bodywork. There is no FM aerial to replace (integrated into rear window)
so I'm left with either options of internal glass-mount or external
glass-mount (similar to car phone aerial but much longer).

What I want to know is, how do these compare in terms of performance?
Most of the areas I drive were fine with the original antenna, with only
a few marginal areas. Is this likely to get worse with a glass-mount?
Bear in mind that my original aerial was about 22cm and all the
glass-mount ones I've seen are 44cm so maybe that gain will help
overcome the other losses.

I'm guessing the exterior glass-mount is the better option compared to
the interior one, any experiences of this?

Finally(!) do all car DAB units use the same antenna connector or will I
need to do some splicing? The JVC one is a really small round push-on coax.

Cheers
Paul.

My experience of an internally mounted DAB aerial (with a REVO DAB unit)
wasn't good, but this was complicated by the fact that my car has a
heat-reflecting windscreen so the aerial had to go in the front quarter
light area which might have adversely affected it's performance. I drive all
over the country with work and many areas suffered major drop outs for long
distances.

I self-installed a glass-mounted antenna (easier to do than I expected) and
I get almost NO signal issues any more - a HUGE difference and I can't
remember the last time I lost the DAB signal.

ainsley


"Paul Morgan" wrote in message
...
I have a JVC DAB receiver add-on for my head unit which works reasonably
well (apart from questionable DAB coverage but that's another matter...).
It came supplied with an external aerial which can either be stuck onto the
roof and the cable routed down the side of the rear window or mounted to
the side of the boot lid.

Unfortunately it's a hideous looking thing, and I've recently bought a new
car that I don't particularly want to be sticking things to the bodywork.
There is no FM aerial to replace (integrated into rear window) so I'm left
with either options of internal glass-mount or external glass-mount
(similar to car phone aerial but much longer).

What I want to know is, how do these compare in terms of performance? Most
of the areas I drive were fine with the original antenna, with only a few
marginal areas. Is this likely to get worse with a glass-mount? Bear in
mind that my original aerial was about 22cm and all the glass-mount ones
I've seen are 44cm so maybe that gain will help overcome the other losses.

I'm guessing the exterior glass-mount is the better option compared to the
interior one, any experiences of this?

Finally(!) do all car DAB units use the same antenna connector or will I
need to do some splicing? The JVC one is a really small round push-on
coax.

Cheers
Paul.

On 27/05/2005 08:56 BTInternet wrote:
My experience of an internally mounted DAB aerial (with a REVO DAB unit)
wasn't good, but this was complicated by the fact that my car has a
heat-reflecting windscreen so the aerial had to go in the front quarter
light area which might have adversely affected it's performance. I drive all
over the country with work and many areas suffered major drop outs for long
distances.

I self-installed a glass-mounted antenna (easier to do than I expected) and
I get almost NO signal issues any more - a HUGE difference and I can't
remember the last time I lost the DAB signal.

Thanks for that, I think I'll try an external glass mount then. What
length is the antenna on yours, 44cm or thereabouts?

Cheers
Paul.