Kenwood TS-590S
firmware v1.06
Kenwood · Released Dec 22, 2011 · First seen Sep 6, 2026
Source:
kenwood.com
v1.06 is not the latest firmware for the Kenwood TS-590S: the current version is v2.05 (March 12, 2020). Go to v2.05
In short — summary by updatemystuff.com
Antenna tuner presets now correctly store per antenna; fixes S-meter and CW recording.
- Antenna tuner presets store for each antenna connector
- S-meter spike after tuning eliminated
- CW message recording in keyer Mode A corrected
Written from Kenwood's release notes, which are printed in full below.
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What's in this update
The following features are updated.
- Improves desensing level caused by strong out-of-passband signals on up-conversion bands.
- Reduces the minimum volume of the TX monitor in [FSK] mode.
- Changes the time constant of the ALC meter and the Speech Processor compression meter from 50ms to 300ms.
The following symptoms are revised.
- Just after an AT tuning is completed, the S meter level might become high for a moment.
- Preset data of the internal antenna tuner might not be stored correctly for each antenna connector ANT1 / ANT2.
- Cannot record CW messages correctly when the built-in electronic keyer is set to Mode A.
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