In article ,
Mark Carver wrote:
This will work for VHF, but not AM. Modern radios have automatic
matching for AM - older ones had a preset. When extending an aerial
lead you use a pukka extension which is matched already by IIRC the
addition of series capacitance.

There used to be a tiny trimming capacitor normally on the front panel
for this matching. On modern sets I don't know how this is achieved
automatically ?

I don't know how it works either - but since the trimmer has disappeared
it must be automatically achieved?

troll mode

Who bothers to listen on crappy old AM these days anyway ?

When driving the length of the UK listening to R4 you still need LW in
places.

--
*I went to school to become a wit, only got halfway through.

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