>Ever performed "tuner alignment"? I would expect
>that everything (including the ceramic tuning caps),
>by now, has (have) aged and the nominal F_sub_o has
>changed.

Ouch.  No :(  I've read through the entire set alignment proceedure
for the CTC-15/16 (the DO-2 is actually a 15 derivative) and it's
*nasty* complex...


>A lost art to be sure ... that along with IF alignment
>on a set of that vintage - a process that required a
>sweep generator equipped with crystal-controlled 'markers'
>(that were used to denote important frequencies like
>the video and audio carrier freqs, the color burst
>freq)

Ahh, I have the equipment, and an HP frequency counter to make sure
it's all exact :)

I've done B&W sets (noteably a Bendix and a Setchel Carlson).
They're not horrid.  The Sams on them is always helpful (not).

>  and a pocket full of 'diddle sticks' to fit the
>ferrite core slugs that were adjustable in the slew of
>IF transformers and various adjustable 'traps' that
>made up the IF system in a set ...

I suspect the whole set has drifted.  The Sylvania is my bedroom set
(!), and very nice, save for the convergence, which is still not
right.  I swapped CRTs in it, though, so I started from *scratch* the
last time I did it.  It's pretty close, though, and definately
watchable, but there's a visable misconvergence, which I suspect is
just the red static.

I once saw a totally restored CTC-9, and the picture was truely jaw
dropping.  I've heard CTC-2s are really nice when they're done right,
too...

BTW - does ANYONE use I/Q color demodulation anymore?

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