microHAM MK2R
firmware v6.0
microHAM · Released Jan 25, 2012 · First seen Sep 9, 2026
Source:
microham.com
v6.0 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
PTT timing now mode-based: simultaneous in CW, delayed in other modes.
- PTT lead timing now consistently applied based on mode
- Serial CW bug fixed: no longer generates PTT in VOICE mode
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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