microHAM DIGI KEYER firmware `v2.6`

microHAM · Released Dec 23, 2005 · First seen Sep 9, 2026

v2.6 is not the latest firmware for the microHAM DIGI KEYER: the current version is v5.4 (March 5, 2008). Go to v5.4

In short — summary by updatemystuff.com

PA PTT optionally generates LNA PTT, PTT2 from foot switch restored, TUNE generates early PTT for radio compatibility.

PA PTT optionally generates LNA PTT with PTT tail; PTT2 from foot switch like before v1.8
TUNE function generates PTT in advance before CW to overcome radio compatibility issues
New FSK busy flag allows host applications to control PTT timing

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

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PA PTT output can optionaly generate also LNA PTT (with PTT tail)
PTT2 can be again generated from foot switch like before v1.8 (PTT1/PTT2 from footswitch are always delayed)
New flag "FSK busy" is generated. This allows to host applications turn PTT off in the right time.
Function TUNE, started with asterisk on key pad, now generate PTT in advance before CW to overcome problems with some radios.
Added possibility to temporarily suppress keyboard evaluation. This can be used by router to handle voice message recording/playing from keyer keyboard without mixing with standard function of keyboard.
support for digi keyer

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