Hello. I would like to modify my old SB-200 for QSK use. The Richard L. Measures schematic, recommanded by this reflector, uses a Vacuum relay Jennings RJ-1A or Kilovac HC-1. Theses relays are extremly rares in France so I'd like to buy a used one. I will pay it via Paypal. Thanks in advance for your offers. -- F8DQL - UFT 1116 K2/100 #3249