microHAM MK2R
firmware v3.3
microHAM · Released Feb 11, 2008 · First seen Sep 9, 2026
Source:
microham.com
v3.3 is not the latest firmware for the microHAM MK2R: the current version is v7.19 (October 8, 2020). Go to v7.19
In short — summary by updatemystuff.com
Serial CW/PTT steering fixed, WinKey steering parameter added, hot switch protection improved.
- Serial CW/PTT steering corrected
- WinKey CW/PTT steering parameter added
- PTT protection via firmware generation
Written from microHAM's release notes, which are printed in full below.
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What's in this update
- bug fixed: Now "Steer serial CW/PTT" works correctly. Serial CW and PTT are redirected to focused radio only if this feature is selected.
- New parameter "Steer WinKey CW/PTT" added. WinKey CW and PTT are redirected to focused radio only if this feature is selected or WinKey is not under logger control (= WinKey port in router is closed).
- WinKey command 0x18 (PTT On/Off) is filtered out. Instead of sending it to the WinKey the PTT is generated by firmware. This ensures hot switch protection. Paddle drops such simulated PTT in all modes.
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