Hi John,
Ever grateful, now that unlike with all G500s a manual, shematic and parts list doesn't come in every box, but of course, those were British made, bit like Alba, Peto-Scott, and our very own Gt Yarmouth - Spencer-West that used ECL80s for most everything (apart from combined LOP and Boost diode as it kept flashing)
Hi Mulja - tried your link but haven't the hand-shake perhaps - Chris.