[ARC5] Re-reading Gordon White article...

neilb at ihug.co.nz neilb at ihug.co.nz
Sat Jun 8 17:36:23 EDT 2013


> From: Jason W6IEE
> Sent: Sunday, June 09, 2013 1:39 AM
>
> I'll give this a shot next time some "lab time" avails itself. What are
> usual suspects of this failure mode? Weak tube? Resistor value gone high?
> Leaky cap? I've already made certain that the variable cap plates aren't
> shorting out.

The B+ feed to the 12K8 local oscillator goes via a 0.51 Meg resistor
mounted inside the LO coil can. Be sure to open the can and check it.
Or even better, replace it anyway, since it may be going high after
warmup.

73 de Neil ZL1ANM



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