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In article , "nn" wrote:
"Eamon Skelton" wrote in message news ![]() 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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