Kenwood TS-990S firmware v1.26

Kenwood · Released Sep 25, 2023 · First seen Sep 6, 2026

Source: kenwood.com

v1.26 is the latest firmware for the Kenwood TS-990S, released September 25, 2023.

In short — summary by updatemystuff.com

Bandscope span now stored per mode, fixes CW text keying and APF frequency adjustment issues.

  • Bandscope span stored separately per mode
  • CW text keying command fixed
  • APF center frequency corrected with IF SHIFT changes

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.

  1. Changes the default value of the Menu No.6-08 "Filter Control in SSB-DATA Mode (High/Low and Sh​ift/Width)" from "Shift & Width" to "High & Low Cut".
  2. Changes the default value of the Clock Menu No.1-01 "NTP Server Address" from "Blank" to "time.nist.gov".
  3. Stores the bandscope span frequency separately for SSB/AM/FM mode, CW/FSK/PSK mode, and DATA mode.
  • Please al​so refer to the revised Instruction Manuals .

The following symptoms are revised.

  1. The PC control command "KY" (CW text keying) may not work correctly under certain conditions.
  2. Center frequency of the APF (Audio Peak Filter) is not corrected when IF SHIFT is varied.

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Other versions for this product

See the full firmware history for the TS-990S