microHAM micro KEYER firmware `v1.7`

microHAM · Released Dec 16, 2004 · First seen Sep 9, 2026

v1.7 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

Fixed side tone-induced data disturbance at high baud rates, added inverted FSK support.

Fixed radio-to-computer data disturbance when side tone enabled at high baud rates
Added inverted FSK support for TT-OMNI V and VI
Winkey buffer overflow protection now host application responsibility

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

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Support for inverted FSK (Dedicated to use with TT-OMNI V or TT-OMNI VI).
bug fixed: When side tone was turned on, the data from radio to computer was sporadically disturbed, especially on high baud rates like a 57600 bps.
bug fixed: Data from computer to Winkey are routed without protection against Winkey buffer overflow. Only host application is responsible for this protection. It prevents too late response to message abort.

Use with router v1.13.

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