Behold, Tom signaled from keyed 4-1000A filament:

The conditions the last few nights have been very bad

Doh!

I've been designing a single-balanced 12AT7 mixer for a homebrew rig.
Here I thought it was my design that was stuffed :-\

It's been the conditions!

--
Gregg
*Perhaps it's useful, even if it can't be SPICE'd*
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