microHAM micro KEYER II firmware v2.2

microHAM · Released Jan 27, 2008 · First seen Sep 9, 2026

Source: microham.com

v2.2 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

Added SteppIR antenna control, fixed display freeze, and changed Oops switch behavior.

  • Added SteppIR antenna control to iLink port
  • Fixed display freeze after initial PTT raise
  • Oops switch now works only during message playback

Written from microHAM's release notes, which are printed in full below.

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What's in this update

  • SteppIR control added to iLink port functions.
  • Oops switch (message termination by footswitch) now works only for mess​age playback and not for recording.
  • bug fixed: After PTT was first time raised the lower display line freezed with displayed welcome message. Bug was ​introduced in v2.1.
  • minor bug fixed: Potential deadlock in situation when PS2 CLK is faulty shortened to ground was eliminated.

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Other versions for this product

See the full firmware history for the micro KEYER II