Kenwood TS-990S
firmware v1.22
Kenwood · Released Feb 14, 2019 · First seen Sep 6, 2026
Source:
kenwood.com
v1.22 is not the latest firmware for the Kenwood TS-990S: the current version is v1.26 (September 25, 2023). Go to v1.26
In short — summary by updatemystuff.com
Fixes filter width display after mode changes, meter update timing, and transceiver response to invalid PC commands.
- Filter width display after mode switching
- Meter update timing
- Invalid PC control command handling
Written from Kenwood's release notes, which are printed in full below.
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What's in this update
The following symptoms are revised.
- After changing the operating mode from FSK/PSK to USB/LSB, filter width in the sub screen may not be indicated correctly under certain conditions.
- The meters may not be updated at the correct timing.
- After receiving an invalid PC control command from some external devices via the COM port, the transceiver may not work correctly.
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