Elecraft KPA500
firmware v1.33
Elecraft · Released Aug 5, 2013 · First seen Sep 14, 2026
Source:
elecraft.com
v1.33 is not the latest firmware for the Elecraft KPA500: the current version is v1.54 (December 17, 2017). Go to v1.54
In short — summary by updatemystuff.com
Fixed power-on communication issue when K3 radio was on a different band.
- OPERATE message now sends correctly on power-up regardless of band changes
Written from Elecraft's release notes, which are printed in full below.
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What's in this update
- Fixed a problem with KPA500 power-on when Power-ON OPER was set. If the K3 was on a different band on KPA power-up than when the KPA was last powered down, then the KPA would not send the OPERATE message to the K3. This worked properly if the K3 was on the same band as previous. The KPA should now properly send the OPERATE message, and the K3 should change to th alternate (asterisk) setting if properly set on the K3.
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