[AMPS] Capacitor Identification

[wc7m@vcn.com (W7CW Jay E Ostrem)]

I've got two ceramic doorknob caps that a friend gave me, stating they
would make good blocker capacitors. They are both 7/8 inch thick, 2 3/8
inch diameter, white in color, with threaded holes for screws. Both are
same manufacturer,  The "M" has a circle around it.

482Z
M20KV
709A


482Z
M20KV
809A


Any help would be appreciated.
                              73 Jay W7CW

                                 1AB Ranch
                                 Gillette, Wyoming

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