At age nearly 80 I don't need tubes to last forever, but it would be nice.
Les, many thanks for your advice and experience (new- to- me 75A-4 is soon on the bench 🤗). Roy Morgan K1LKY Western Mass [email protected] > On Jun 29, 2024, at 9:47 PM, Jacques Fortin <[email protected]> wrote: > > The 6C4 is one of the first miniature tubes issued. > The "double" 6C4 is a 12AU7. > The 6100 is the Industrial number for a 6C4, which bears the 6189 number in > the double version. > Both the 6C4 and the 6100 have 6.3V, 150mA filaments. > The 6135 is a "ruggedized" version of the 6C4: 6.3V, 175mA filament, ______________________________________________________________ R-390 mailing list Home: http://mailman.qth.net/mailman/listinfo/r-390 Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
