Hi All,
enjoykin4 the explanation on the operation of my lrl is very accurate, you're a real expert.
I am always in Switzerland and I have no chance to post oscillograms of my LRL. As regards the stability all the lrl that I have realized are very stable, but sometimes it happened that the LRL was unstable, this is due to the fact that there is an spurious oscillation which overlaps the signal, try this: adjust the P2 slider to the +12V (to reset the signal on the base of TR2) and verifies that the point X there is no signal, You may do this with the scope but often the measure clears the oscillations, a more secure method is measuring the DC output of the pin 2 of CD4046, I recall should be zero. If there is signal at point X must decrease the amplification lowering the value of C13-C15.
Best Regards
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