In this second prototype I used following component values:
R9 = 68k
C14 = C15 = 0, not used
R12 = R13 = 220k
All other components as in the original schematics
The yellow base is PVC covered divers weight, 4lbs = 1.8kg.
White body is POM plastics
Electrodes are  kitchen measuring spoons 2.5ml
available in Biltema 85885
OH1TV
9.11.2008
I reduced further paddle sensitivity after some use.
To do so I increased R9 to 68kohm.
There are less errors in my CW transmission now.
OH1TV
10.11.2008
Dimensions
OH1TV
9.11.2008
Back