Ask Howard Mills, W3HM. I never heard of this before on a J-4. If it was necessary I'm sure Howard has a good way to do it or would at least know the in's and out's.
73, Russ WQ3X
No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.409 / Virus Database: 268.15.26/598 - Release Date: 12/22/2006