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I was reminded of some advice I gave to Klondike Mike last week ("Inch by inch is a cinch-Yard by yard is very hard!") so I decided to start this input tune and control grid bias modification. Doubtful I will finish it today but I will never finish it if I don't get started.
Nomadradio had suggested that "someone else" make a video showing how to do this, I do not have the capability to do this but will try my best to take plenty of pictures and explain the steps (and mistakes) along the way.

Below is the "subject" of this mod.
[ATTACH=full]24614[/ATTACH]

Subject with the cover off. (Note extra room is limited.)
[ATTACH=full]24615[/ATTACH]
[ATTACH=full]24616[/ATTACH]

I'm hoping to squeeze the coil and input tune capacitor in between the rear tube and the transformer.
[ATTACH=full]24617[/ATTACH]

Back side of the tube sockets where the control grid circuit will be attached.
[ATTACH=full]24618[/ATTACH]

And finally, my hand drawn schematic for the modifications. (Thanks Nomadradio!)
[ATTACH=full]24619[/ATTACH]

Back to work!
73's
David

<blockquote data-quote="Dmans" data-source="post: 633810" data-attributes="member: 49046">I was reminded of some advice I gave to Klondike Mike last week (&quot;Inch by inch is a cinch-Yard by yard is very hard!&quot;) so I decided to start this input tune and control grid bias modification. Doubtful I will finish it today but I will never finish it if I don&#039;t get started.Nomadradio had suggested that &quot;someone else&quot; make a video showing how to do this, I do not have the capability to do this but will try my best to take plenty of pictures and explain the steps (and mistakes) along the way.Below is the &quot;subject&quot; of this mod.[ATTACH=full]24614[/ATTACH]Subject with the cover off. (Note extra room is limited.)[ATTACH=full]24615[/ATTACH][ATTACH=full]24616[/ATTACH]I&#039;m hoping to squeeze the coil and input tune capacitor in between the rear tube and the transformer.[ATTACH=full]24617[/ATTACH]Back side of the tube sockets where the control grid circuit will be attached.[ATTACH=full]24618[/ATTACH]And finally, my hand drawn schematic for the modifications. (Thanks Nomadradio!)[ATTACH=full]24619[/ATTACH]Back to work!73&#039;sDavid</blockquote>

[QUOTE="Dmans, post: 633810, member: 49046"] I was reminded of some advice I gave to Klondike Mike last week ("Inch by inch is a cinch-Yard by yard is very hard!") so I decided to start this input tune and control grid bias modification. Doubtful I will finish it today but I will never finish it if I don't get started. Nomadradio had suggested that "someone else" make a video showing how to do this, I do not have the capability to do this but will try my best to take plenty of pictures and explain the steps (and mistakes) along the way. Below is the "subject" of this mod. [ATTACH=full]24614[/ATTACH] Subject with the cover off. (Note extra room is limited.) [ATTACH=full]24615[/ATTACH] [ATTACH=full]24616[/ATTACH] I'm hoping to squeeze the coil and input tune capacitor in between the rear tube and the transformer. [ATTACH=full]24617[/ATTACH] Back side of the tube sockets where the control grid circuit will be attached. [ATTACH=full]24618[/ATTACH] And finally, my hand drawn schematic for the modifications. (Thanks Nomadradio!) [ATTACH=full]24619[/ATTACH] Back to work! 73's David [/QUOTE]

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