B&W 850A modified for use on 10-160 meters, inductances are as follows:
10M .69 uh; 15m 1.07uh; 20m 1.75uh; 40m 4.12uh; 80m 9.2uh;  160  18.4uh
(with 4 1/4 turns of 3033 minductor added). This coil was designed for a
higher RL than my 2300 ohm (.85 amp & 3000V) so the 13.5 almost covers
down to 160 instead of 80. The 3033 coil adds another 5 uh.  I had a spare
b&w switch       contact in my junkbox for the 80M tap.
 
 
 
 
 
 
 
 
 

                                                                          40 meter tap moved  2 turns
 
 

                                                                        80 meter tap added 3 turns
                                                                   ( 1 turn shown here, later changed to 3)
                                                           beyond old 40m tap

   
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