Hi John..well I'm not having much help on my posting so I'll "try" to help ya with what I've seen..this op did his a number of years back so the info may be interesting but out-of-date today..then again who knows?
a link to his site
http://www.qsl.net/wa5cmi/gk500.htm evidently he had a business called Swift Screening out of Garland Texas do the silk screening for the front panel..I hope it helps Merry Christmas 73 de DAVE
