microHAM micro KEYER II
firmware v5.0
microHAM · Released Jan 25, 2012 · First seen Sep 9, 2026
Source:
microham.com
v5.0 is not the latest firmware for the microHAM micro KEYER II: the current version is v6.21 (October 8, 2020). Go to v6.21
In short — summary by updatemystuff.com
Serial CW no longer generates PTT in VOICE mode; PTT behavior now mode-consistent
- Serial CW and WinKey CW now generate PTT only in CW mode
- PTT timing behavior is now consistent based on current mode, not PTT source
Written from microHAM's release notes, which are printed in full below.
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What's in this update
- PTT lead can be applied in two different ways:
(1) PTT1/PTT2 are delayed to PA/LNA PTT (2) PTT1/PTT2 are started simultaneously with PA/LNA PTT and CW is delayed Up to this version the second case was used only when PTT was initiated by WinKey or serial CW.
In all other cases (like foot switch, serial PTT, WK command PTT ...) the first way was used.
Since this version it is performed consistently with the current mode.
The second case is used in CW mode and the first case in all other modes regardless of what initiates PTT.
- bug fixed: When "CW in VOICE" was enabled serial CW generated PTT also in VOICE mode. Now consistently both serial CW and WinKey CW generates PTT only in CW mode. They don't generate PTT in VOICE at all.
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