Nigel Molesworth wrote:
On Wed, 31 Dec 2008 14:16:57 +0000, Dave wrote:

You have not stated the frequencies you need this for.

Is there more than one VHF FM broadcast band then? I guess 88MHz to 108MHz.

I don't think I've made my problem clear: I don't have space to mount a 1.5m
antenna, hence my OP "Modern cars seem to have much shorter aerials ..."

I've got about 75cm of headroom, so I need to use a short antenna, like they
have on cars. So how are they made to be short?

Get a copy of the ARRL Antenna book. Look up VHF antenna's. You can make
a 1/4 wave antenna directly or you can add a coil of wire to either end
or the center of a shorter length of wire. The Antenna book will give
you the details and some antenna theory at the same time.

Dave WD9BDZ