In the past, when I've had problems with a pointer being twitchy, it's been
some combination of a need to clean the gadget, system load, and/or RF getting
in the way.
I'm using a Logitech cordless trackball. No problems assuming I keep it clean.
(I prefer trackballs as I can get greater pointer motion on screen with a
minimum of hand/arm motion. Having some programmable buttons on the trackball
mapped to ESC and ENTER also is extremely useful for RTTY contesting.)
FWIW, a few months ago I added a Steelseries Merc Stealth gaming keyboard to my
shack PC. Although it is a corded keyboard (and therefore exposed to the risk
of RF), the ability to program/remap keys on the board (in particular a gaming
pad on the left side) has come in extremely handy for RTTY and CW operations.
The programmable keyboard and the trackball make for very, very comfy RTTY
contesting.
--
Michael Adams | N1EN | mda@n1en.org
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