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Old September 3rd 05, 07:00 PM
Fred McKenzie
 
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In article , "nn" wrote:

"Eamon Skelton" wrote in message
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What happens if you adjust L7?

73, Ed. EI9GQ.


I haven't touched it. But as far as I understand its there to avoid
oscillation
to disturb regulation process insuide L09. So it should have nothing
to do with the crystal "pushing". (Let me know if I am totally wrong...


Pasi-

The 1 microfarad capacitor prevents the regulator from oscillating.

L7 would normally be adjusted for maximum output from the oscillator
stage, but may also have an effect on frequency. Since it is all you have
to adjust, I suggest you adjust it.

I believe the crystal is connected in a series-resonant configuration,
which is less affected by circuit values. The only recourse may be to
purchase a new crystal.

73, Fred, K4DII
 
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