220pF.  (1kV)

 


Antenna Coupler

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Antenna Coupler 30- or  40-80 m
alligator clips
wire diameter: 2.5mm ;  1.6mm.
average coildiameter:  93mm ;  82mm.

 

pitch: 4.7mm ;  10mm.

turns: 2 x 9 ;  2x4 (series connection).

wire diameter: 2.5mm ;  4mm.

 

average coildiameter:  64mm ;  69mm.
pitch: 3mm ;  3mm.

.

turns: 4.52.5.

 

C1:
ATU circuit, 30,40 and 80 meter band
C2: 2 x 800pf
L2,40-80m;   L2, 30m.
L1,40-80m   L1, 30m
Detail alligator clips connection