Yes, and no! You have to watch the filament current. The 5Y3 draws 2-amperes and the 5U4 draws 3-amperes. If you have one, a 5R4 would work fine without worrying about the filament current. The 5R4 also draws 2-amperes. Glen, K9STH
Website: http://k9sth.com On Saturday, May 24, 2014 12:46 PM, Bob Jackson <[email protected]> wrote: Can a 5Y3 be subbed for a 5U4 for testing purposes? Bob ______________________________________________________________ Boatanchors mailing list Home: http://mailman.qth.net/mailman/listinfo/boatanchors Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] List Administrator: Duane Fischer, W8DBF ** For Assistance: dfischer at usol.com ** This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html _______________________________________________ Boatanchors mailing list [email protected] https://puck.nether.net/mailman/listinfo/boatanchors
