microHAM CW KEYER firmware v2.6

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

Source: microham.com

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

In short — summary by updatemystuff.com

Adds digi keyer support, restores PTT2 from footswitch, and improves CW TUNE timing

  • Digi keyer support added
  • PTT2 footswitch generation restored
  • TUNE function generates PTT in advance before CW for better radio compatibility

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

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What's in this update

  • PA PTT output can optionaly gene​rate 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 ra​dios.
  • 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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Other versions for this product

See the full firmware history for the CW KEYER