[Hamlib-developer] ICOM7300 MKII failed comms issue

[Jim E. <jim...@gm...>]

ham...@li...

Hello,

I am using  WSJT-X Improved v3.1.0-260418 with HamLib versions 4.7.2-rc
202605-06 and 4.7.1 2026-04-15. My radio is an Icom 7300 MkII running
firmware version 1.02

If I set the radio selection to Icom 7300, everything appears to work as
expected. However, if I change the radio selector to Icom 7300 MkII, I see
a communications error listed below. If I revert to the Icom 7300
selection, the app begins working as expected again. No other settings on
the radio tab were changed. It is using COM6 at 19200 baud.

I have included the diagnostic files from the WSJT-X. The app starts with
the Icom 7300 radio configuration; I then navigate to File->Settings and
select the Radio tab. I then change the radio selected to Icom 7300 MkII
and then click on the Test CAT button. The error below appears. I then
closed the app and collected the diagnostic files.

Please let me know if there is anything else you need from me or anything
you would like me to test.

Regards,

Jim Ewald
N7ZFI

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