An embodiment of the invention comprises a phase modulation detector comprising a pair of transformers, {HEAD ~ each transformer} having {TAIL ~ a primary winding} respectively connected to one of the transducers—e.g., via a respective input amplifier 
having
An embodiment of the invention comprises a phase modulation detector comprising a pair of transformers , { HEAD ~ each transformer } having { TAIL ~ a primary winding } respectively connected to one of the transducers — e.g. , via a respective input amplifier
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH