23. RE: FW: [Elecraft] CW (Ron D'Eau Claire)
When I couldnot find any Vibroplex bugs with slow springs at their store in
NY I would generally take a full size(Blue Racers automatically excluded)
one aboard my boat and grind the flat spring that connects the weight arm to
the paddles. A little circular indentation ground on both sides of the
spring would bring down the speed with the two weights relatively near the
end of the weight bar. To go fast slide the weight up. To work KPH slide
them back down again.
Some bugs seemed to have a natural speed resonance and equally important for
ship use was the dash feedback that came into our thumb as most often we
would not have anything aboard with which to monitor orselves unlesss we
were a lucky boat with 2 HF receivers.
On the LF rig electronic bugs were useless until hv transistors came out as
the key up voltage could exceed 500v.That keying relay also limited the
speed as it had a large fraction of an inch as spacing. No monitor necessary
as the LF rx was a regen.
Ask me if I miss it!
73
Earl W7TK
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