08-06-2018, 02:43 PM
(This post was last modified: 08-06-2018, 02:51 PM by Geordie McBoyne.)
Hi Terry,
I was referring to the diagram shown with the information provided for the 6K7 by the Radiomuseum. The 47Kohm screen feed resistor is fine for static conditions but as the 6K7 is usually an AGC controlled valve a more stable source of volts is better for this vari-mu valve.
There is a similar looking set in my collection which has been rewired as a superhet. Circuit is now similar to the first generation Little Maestro series.
Geordie McBoyne.
I was referring to the diagram shown with the information provided for the 6K7 by the Radiomuseum. The 47Kohm screen feed resistor is fine for static conditions but as the 6K7 is usually an AGC controlled valve a more stable source of volts is better for this vari-mu valve.
There is a similar looking set in my collection which has been rewired as a superhet. Circuit is now similar to the first generation Little Maestro series.
Geordie McBoyne.
