In the summer of 2011, I acquired a Stancor 10P transmitter in complete-but-modified condition. Lately, it's been bothering me that I don't have an HF, AM ham transmitter that works, despite owning three of them and having a long-standing breadboard project to build another.
The 10P looked like a good place to start. It's the smallest of the lot, doesn't run a lot of power, and uses standard tubes.
A closer look under the chassis revealed extensive mods -- the 6J5 oscillator tube replaced by a 6AG7 (which would provide more than plenty of drive for the poor 6L6 PA!), the 80 rectifier replaced by a 5Y3,* five-pin crystal socket swapped for an octal, extra components, and a rather casual attitude towards things like making good soldered joints, lead dress, and similar items. Much of the wiring was old and the newer stuff was a bit, well, sub-optimum.
It seemed best to clear it all away and start over. I'm about half done.
It should look like this:
Here's the front panel.
It's small. Scale may be a little hard to grasp -- the "Key" and "Mic." jacks are standard 1/4" types.
For completeness, here's a top view.
* I'll probably keep the 5Y3. Essentially an octal-base twin to the '80, they're a bit more affordable and easier to find.