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#8
09-27-2018, 11:24 AM
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1) everything Electronic M said
2) Yes, "knifing" means inserting a tool to spread the windings (only done on small air-wound coils) 3) audio IF oscillating sounds a bit strange to me (but someone with more experience here should comment). Are you doing this with a tuner signal, or injecting 4.5 MHz audio? If injecting 4.5 MHz, be very careful of your cable / wire lengths and grounding. 
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