I have an original Cobra 148GTL CB Radio. I know that i can modify it
to operate in the 10Meter band by switching the crystal to a
11.6908MHz crystal.

is anybody familiar with this mod? If so, how do i determine what
frequency each channel will be at? will i need to purchase a freq.
countert o determine what freq. will go with what channel?

Also, will my 102: whip work with 10M, or rather will it give me a
close enough SWR to suffice, or will i need to purchase a new antenna?

Any information or assistance would be greatly appreciated.

Eddie