As has been mentioned, several outfits make desquised antennas, but are
expensive. Also, the BIG problem, in car radio antennas isn't the antenna,
but the FEEDLINE (coax) for it- center conductor is about the diameter of
#26- #30 wire! And to compuund it, todays vehicles are so stuffed under
the dash, it is hard to get to the coax/motorola fitting. But, if (and
have done this in the past), can get to it, and replace it with rg-58-u,
little detrement was observed to am/fm reception, and then the antenna, if
sized with a swr meter, for 1/4 or 3/4 wavelength , works well . also, think
(at least for 2 meters, some outfits still make antenna tuners for
vehicles)! or, build your own tuner/duplexer (about $20 in parts, max)
(course, like the one about leaveing the XYL/kids in the trunk, especially
if it soundproofed)! Jim NN7K



"DeG" wrote in message
link.net...
I'm wanting to keep peace within the family.. NO! Extra antennas on the
vehicle..
I want to install a dual band 2m/440 mobile using the AM/FM antenna that
is
on the vehicle.. It will be mostly used for receive, BUT....
Other than a duplexer and tuner (s) What is needed to STOP the RF from
damaging the AM/FM radio in case I want to transmit?...
Any help on this??