Brian,

Any transmission from within the passenger compartment will be attenuated at
least 10 dB. On 27 MHz, it will likely be 20 dB. Reception will also be
adversely affected the same amount. In other words, you won't be able to
communicate.

Best regards from Rochester, NY
Jim

"Totalrod" wrote in message
om...
I'm new to this group and know very little about CB radios, so please,
no flames! I'm restoring a 1957 Buick Special and want to use a CB in
my car. I'm looking at possibly buying a Cobra 29LTD classic w/ the
supermod upgrade. My only problem is that I don't an antenna showing
on this car. My question is this: If I were to use one of those Helix
coil antennas, and mounted it under the seat, would it work just as
well as a regular antenna on the roof? My theory is that using one of
those helix antennas would compensate for the fact that I'm mounting
it in such a weird location (that is, if location even makes a
difference). Again, I know almost nothing about this sort of stuff.
All I know is that I definately want a CB in my '57 Buick. Any info is
appreciated.
Bryan


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