"Dennis Monticelli" <[EMAIL PROTECTED]> made an utterance to the drakelist gang ---------------------------------------------------------------------- I clean the tube envelope with Windex and am careful to keep off the markings. Qtips can be used to increase precision. I then do a light dry rub on the letters to take off loose surface dirt. Works pretty well.
Identifying worn markings can sometimes be accomplished by the hot breath method. Apparently the condensation is different between the naked glass and the marked glass leading to some heightened contrast. There are some tubes that rare ecognizable without markings, but most of the unmarked tubes remain mystery tubes. On Dec 5, 2007 12:39 PM, Donley <[EMAIL PROTECTED]> wrote: > > > When restoring a tube type radio, the restoration looks better when the > tubes are nice and shiny. But cleaning tubes is hazardous to tube > identification. The markings usually come off easier than the dirt. > > What are recommended methods of cleaning tubes? > > Also, is there a method of reading the markings on tubes that have been > smudged or with partially or totally removed markings? I seem to recall > someone mentioning that the markings slightly etch the glass and there is a > way to make the markings identifiable. Was I dreaming? > > If there is no way to identify an unmarked tube, what good is it? > > Dick > KC9UB ---------------------------------------------------------------------- Submissions: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] - unsubscribe drakelist in body Hopelessly Lost: [EMAIL PROTECTED] - help in body of message Zerobeat Web Page: www.zerobeat.net - sponsored by www.tlchost.net ----------------------------------------------------------------------
