"CL10" wrote in message ...
"DAB sounds worse than FM" wrote
in message ...

How have they managed this, or is it as complex as just using the FM
aerial
and hoping for the best?

Probably just using the standard VHF FM antenna for the reception of DAB.
Lets say the FM antenna is a 1/4 wave at, say 100MHz, then it must be a 1/2
wave at 200MHz, but that is still a few MHz out for DAB. Close though. Of
course that doesn't take into account impedance!

On the other hand, the unit may have a built-in antenna tuning unit, which
would be as simple as a couple of inductors and capacitors, which would
switch in when the DAB service was selected. Not rocket science.

That's what I suspected. However, there is no user adjustment
possible (no trimmer capacitor or similar) - could this be automatic
(or, more accurately, could it be automatic given Goodmans
design-to-budget brief)? Or are they just taking a slightly more
sophisticated version of DASWTFM's "it's close enough" idea, based on
the assumption that the normal car aerial is a band II quarter wave?

Whatever they've done, in my case it works rather well. Drove from
Worcester to Swindon today - which is out of the BBC's advertised
service area virtually the whole way - and had BBC national reception
for the entire journey apart from one dodgy bit right under the
Cotswolds (which is a couple of miles from the future tx site at
Churchdown Hill, so presumably a temporary problem).