[HBR] The long, SLOW HBR project

[Walt Hutchens]

Pictures here:

https://picasaweb.google.com/105255380483660395824/WaltS2008Project

The bottom six pictures are the current ones.   The rest are the previous
version -- chassis got redone since then, with significant rearrangement of
the mixer and IF areas.

The oscillator coil is nearest the front panel.   The antenna coil is inside
the box with the oscillator tube in front of it.   The mixer coil is outside
the box near the rear of the chassis, in front of the RF stage.   The mixer
tube is forward of its coil and the IFs march forward from there (one of the
cans houses the crystal filter), then turn toward the S-meter side of the
panel, ending at the detector stage.  The next tube to the rear is the 1st
audio and BFO; the octal tube is a 117N7 rectifier and 2nd audio stage.

Recent changes in other areas led to slightly higher plate voltage
throughout, which led in turn to regeneration in the RF stage.   That's what
I'm working on now.

Somewhere here is a swamp I was going to drain.

Walt
KJ4KV