>>> a scope, placed around the vicinity of the 17Mc osc. >> Scopes are for wimps. ;) > Um, no. 'Tube Testers' are for wimps. > Scopes are for KL3WL3SS N00BZ Well, what other cool tools are good for checking out that the 17Mc osc is running? Yes, I could fire up a second 390A and listen for the 17Mc note... and "weenie" seems to be the more modern term! Tim.