Kenwood TS-590S
firmware v1.02
Kenwood · Released Jan 20, 2011 · First seen Sep 6, 2026
Source:
kenwood.com
v1.02 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
Fixes CW keying, USB connection issues, and transmit power spike problems
- Fixed CW keying operation in Mode A
- Improved USB connection stability
- Reduced transmit power spikes
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.
- In [SSB-DATA] mode, Speech Processor might not be disabled internally.
- At the end of TX tune mode, carrier output returns to normal mode level after a short delay.
- When the TS-590S is turned ON, the USB port connection may be unstable.
- When the built-in electronic keyer is set to Mode A, CW keying may not work properly.
- TX rise time power spike activates some linear amplifiers' input power protections.
(The firmware Ver.1.02 revises the ALC response characteristics to reduce the power spike.)
6.
When a separate RX ANT is connected, TX output power may be fed back to the RX ANT connector and might affect internal circuits.
(The firmware Ver.1.02 deactivates (opens) RX ANT relay every time the radio transmits.)
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