microHAM micro KEYER
firmware v1.8
microHAM · Released May 15, 2005 · First seen Sep 9, 2026
Source:
microham.com
v1.8 is not the latest firmware for the microHAM micro KEYER: the current version is v5.4 (March 5, 2008). Go to v5.4
In short — summary by updatemystuff.com
PTT2 output removed; serial PTT now supports configurable delay and router v2.0 compatibility.
- PTT2 no longer generated by WinKey and foot switch
- Serial PTT can be delayed per configuration
- New 'any PTT on' flag for router v2.0 support
Written from microHAM's release notes, which are printed in full below.
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What's in this update
- Added new input flag "any PTT on" that is needed by router v2.0 to display current rx/tx state on audio page.
- PTT2 from WinKey is no longer generated (PTT1 still generated by WinKey)
- PTT2 from foot switch is no longer generated (PTT1 always delayed)
- Serial PTT (both PTT1 and PTT2) can be delayed according to configuration.
- Only one delay constant is used for both PTT1 and PTT2, second is reserved for extension.
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