microHAM CW KEYER
firmware v4.2
microHAM · Released Oct 17, 2007 · First seen Sep 9, 2026
Source:
microham.com
v4.2 is not the latest firmware for the microHAM CW KEYER: the current version is v5.4 (March 5, 2008). Go to v5.4
In short — summary by updatemystuff.com
Fixes critical data loss between computer and keyer, plus keyboard freezing and PTT mode configuration issues.
- Resolved data loss from computer causing keyer malfunction
- Fixed PS2 keyboard/pad sporadic freeze
- Fixed WinKey PinConfig not updating on mode change
Written from microHAM's release notes, which are printed in full below.
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What's in this update
- serious bug fixed: Under some circumstances a data sended from computer to keyer could be lost. It caused various undesirable keyer behavior (incorrect PTT configuration, incorrect WK commands, lost data for WK, ...)
- bug fixed: PS2 keyboard/pad sporadically freeze in state in which it didn't respond to key strokes.
- bug fixed: WinKey PinConfig was not always updated on mode change. This caused that incorrect PTT selection (PTT1/PTT2/noPTT) was used.
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