Convert cb aerial to 20meter vertical ?

jayjaydandy

New member
I have got an old cb silver rod half wave aerial and i want to convert it to a quarter wave for use on the 20 meter band.
I Know it can be done and first of all you have to remove the coil but after that i am stuck.
I need it to be resonant at around 14.2000 mhz.
Any help would be greatfully received.
Thanks
 
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