See my earlier post entitled mobile antenna if you care to but this is the
jist of of all.
Road trip. Want to listen to SW. Need antenna.

Ok, how about this, let me compromise.
My original idea was to take a bit of wire, attach it to the auto's external
antenna at the top
and fasten it with a wire tie. Run it down the length of the auto antenna
and secure it at
the base with another wire tie and run the free end in the window to connect
to the SWR.
It was said in this NG that this would produce too much electrical
interferance from the auto.

The next idea was to purchase a magnetically mounted antenna for the trip.
It was said in this NG that
due to too many electrical componants that it may not work well for SW
reception.
It may also get pulled off the auto by the wind generated by a large truck
or what have you.

Ok. New idea. Take the original thought. Fasten a length of wire to the
existing auto antenna at the top and
secure it with a wire tie. Run it down the antenna and secure it at the
base with another wire tie.
At this point cut it and solder on a coax with the antenna wire to the
center conductor of the coax. Solder another wire to the shield and run it
to ground. Run the coax in the window and connect to the short wave
receiver.

Well, what do you thing. Might work?

All comments welcome and thanks.