Topband: GAP Vertical Question

[Tom W8JI]

> A Shakespere CB whip in my 66 Corvette which was advervtised for 
> fiberglass cars. It couldnt be heard a mile away with 4W. I added 
> "radials" from the base on the rear deck to the frame on all 4 corners and 
> then it worked much better. This was back in the late 70's for several 
> years.

 CB antenna manufacturers live in a fantasy land, and almost always grossly 
misrepresent what the sell.

A half wave CB whip is about 18 feet long. It is impossible to use a half 
wave whip on 11 meter mobile on a normal highway or road.

You likely had an antenna with 1/2 wave of wire spooled up on a short 
fiberglass rod, which would never behave like a half-wave.