03-24-2018, 08:36 PM
Tom, it might be better to use a 6v tube. Anyway, I have done a rough sketch of my proposed build. I am sure I will adapt some minor changes as needed, but this is an overview of how I plan to build. Comments or suggestions welcome. Here is a list of things I may change: I may add an LED indicator light, put the input on the front, near the level control instead of the back, and may make some changes around/about the antenna coil. There is quite a bit of room as far as height under the chassis, so some things that look like they are on top of each other, like the line cord and input jack, there is actually an inch or so of space between.
EDIT 3-25-18: I found a wiring error on my 1st diagram. Here is a corrected layout. I turned the 6888 tube to move the plate closer to the antenna tuner, but I may turn it back the way I had it first. I also may move the C5 to connect to pin 5 of the 6888 instead of the oscillator to simplify. I may mount the Osc to a PC board as well as to support the antenna coil, L1. I didn't show the filament wiring as I'm not sure how I am going to run it yet. This is from the schematic Sam posted.
EDIT 3-25-18: I found a wiring error on my 1st diagram. Here is a corrected layout. I turned the 6888 tube to move the plate closer to the antenna tuner, but I may turn it back the way I had it first. I also may move the C5 to connect to pin 5 of the 6888 instead of the oscillator to simplify. I may mount the Osc to a PC board as well as to support the antenna coil, L1. I didn't show the filament wiring as I'm not sure how I am going to run it yet. This is from the schematic Sam posted.
If I could find the place called "Somewhere", I could find "Anything"
Tim
Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44