24-10-2016, 07:20 PM
(This post was last modified: 24-10-2016, 07:21 PM by Mike Watterson.)
You CAN fit a frequency changer on seven pins (not just Octodes, Heptodes)
I'd connect to a PSU monitor current & voltage and see what looks likely, or multiply cold resistance by x2 for approximate.
X78 is Triode - Hexode in a 7 pin base! even with Indirect heater!
http://www.radiomuseum.org/tubes/tube_x78.html
I'd connect to a PSU monitor current & voltage and see what looks likely, or multiply cold resistance by x2 for approximate.
X78 is Triode - Hexode in a 7 pin base! even with Indirect heater!
http://www.radiomuseum.org/tubes/tube_x78.html
