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thank you, ron, for your reply. the one-turn loop is connected to both the points you mention. from the visible side of the 38-9884 board, there are no breaks nor frayed parts of the wire. i can not see the top of the board to determine if the loop is intact. the soldered joint, where the wire from screw number #3 connects to, appears to be newer. i assume it may have been re-soldered with the 1993 repairs.

at this point there still is no shortwave nor police band, and i am starting to work through your bullet points.

i would like to ask if there is a reference manual, or book, or downloadable diagram to identify the internal components? something in addition to the wiring schematic. since i am new at this, i am not sure how i would clean the band switch.

i opened the schematic for the model 40, but i have no electronics background to read the symbols. the 39-6443 label inside the cabinet listed the tubes, and this radio does have the 6J8G tube. how do i check the tube out to see if it is oscillating at all frequencies, do i take that to a local antique radio club?

and finally, in another topic area, the insulation on all the wires leading from the antenna terminal board, and on the 1 wire from the small two-screw board inboard of the antenna terminal board, is cracked in places showing exposed bare wire. what is the recommended replacement wire?

thank you again for your time...