[CW] What is a Sideswiper, or Cootie Key?
D.J.J. Ring, Jr.
n1ea at arrl.net
Thu Apr 12 17:51:40 EDT 2018
Richard,
I will guess from what Don said that he means the pendulum's main spring
is stiff - which is not uncommon. The 1920 versions of Vibroplex used a
thinner spring which made them slower and less likely to have dot bounce.
I have a 1925 Original which sends like a fine instrument. I have a 1960s
Presentation and Original which also send very well but they are a bit more
"high spirited" with a stiffer mainspring, but they respond well. I'd be
afraid of traveling with the 1925 because the mainspring is just that much
thinner and I've broken some mainsprings in my days from shipping them
without restraining the pendulum with rubber bands or twist-ties or string.
73
DR
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