[Philco444]

PenDD4020 Is a direct substitute EXCEPT it needs a resistor on the heater to drop it down to 4.3 volts or somthing like that. My toob number above was totally wrong. I purchased an NOS 4020 for 7 Euro so the British can chirp over their cup of tea. Just like they say how hard the "Fangers" and parts are to find, again nonsense! Just Deutsch sprechen, nicht britisch!! Oh and throw your right arm in the air and hollar Sieg Heil. What amazes me is back before Hitler rose to power and the cry of Sieg Heil became the thang I was watching an American documentary showing how this was done(right arm raised) when the American flag was being raised. Oh oh! Not politically correct just like my mother could only speak German thanks to my Great Grandmother teaching her to read and write but in the old text. My Grandparents figured if there was something they spoke that they didn't want her to hear and understand they spoke English. Another oh oh and strictly verboten when Canuckastan entered the war. Ah yes the good ol days.