[markmokris]

Sparkydave,

I have been through this a number of times now.  I just made this post a couple of days ago, and maybe it will help you.

http://philcoradio.com/phorum/showthread.php?tid=13746

I have rewound tickler coils on 89/19 cathedrals probably at least a dozen times.  I experienced the exact same problem,with the oscillator dropping out below 1000 MHz, many, many times.

By the way, I used 8,200 ohms for my cathode resistor.  I didn't bake the coil, but I wouldn't hesitate to do that.

That post above contains what I think is the secret sauce.

Hope that helps.

Mark