04-04-2015, 07:14 AM
The # of turns isn't super critical on the ant coil as it doesn't determine the frequency (the secondary does) And the phase relationship (direction) doesn't matter much as it just for coupling the ant.
The osc coil is a bit different. The number of turns determines the amount of feedback in turn causes the circuit to oscillate. Phase does matter and the # of turns is somewhat critical. Not enough turns will cause it not to oscillate across the whole band. High end will work but as you go lower in frequency it requires more feedback so the osc will quit. Too many turns like 40 or 50 will cause the output of the osc not to be clean.
The little clear piece isn't critical at all. It was part of the problem! If it makes you feel better you can use a thin strip of masking tape. Ron sez to bake the coil at low temp to evaporate moisture out of it.
Terry
The osc coil is a bit different. The number of turns determines the amount of feedback in turn causes the circuit to oscillate. Phase does matter and the # of turns is somewhat critical. Not enough turns will cause it not to oscillate across the whole band. High end will work but as you go lower in frequency it requires more feedback so the osc will quit. Too many turns like 40 or 50 will cause the output of the osc not to be clean.
The little clear piece isn't critical at all. It was part of the problem! If it makes you feel better you can use a thin strip of masking tape. Ron sez to bake the coil at low temp to evaporate moisture out of it.
Terry
