An attempt to make a text sketch of the concept.

  ---- CENTRE TAPPED COIL----
  |                        |                           |
  |                    GND                       |
  |                                                    |
 T                       M                        T
 X                       O                        X
  |                        V                         |
 A                       I                         A
 N                       N                       N
 T                        G                       T
                            |
                            |
 R                       V                         R
 X                       A                         X
  |                        N                          |
 A                       E                          A
 N                        |                          N
 T                         |                          T
  |                         |                           |
  |                                                     |
  ------------------------------------
                            |
                   TO RCVR

 I hope it worked this time.

                   Ron


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