Elecraft has revised the KAT500 utiity to fix this problem.  VSWR threshold can 
now be set to 1.60 for all bands (but is reported as 1.59 due to rounding 
issues mentioned in the help documentation).  New firmware is available here - 
https://elecraft.com/pages/firmware-software

Thanks Dick.

73,
Andy, k3wyc

________________________________


The KAT500 utility provides the means to set a VSWR threshold for Key Interrupt 
either by individual band, or the same value for all bands.    Selecting ALL, 
entering 1.50 in the Amplifier Key Interrupt box, selecting Apply, results in 
1.50 being set for all bands as expected. After the operation Apply is dim.  
Leaving the Config menu and returning to it still shows 1.50 selected for all 
bands.

If All is reselected, 1.60 entered, and Apply selected then Apply does no go 
dim but the individual bands, and ALL,  each show 1.60. Then select OK and 
Operate.   Then return to Configuration, edit Configuration, VSWR Thresholds.  
With ALL selected Amplifier Key Interrupt is blank.   Inspecting the value for 
each band shows 160 = 1.59 and all other bands 1.50.   The entered value of 
1.60 was not applied.

This anomaly seems repeatable in that 1.50 can be entered, 1.55 can be entered, 
1.80 can be entered,   but 1.60 and 1.56 cannot be.  The sign that that data 
entry has failed is that Apply does not go dim.

Is this a known problem with KAT500 utility 1.16.7.25?

Thanks,
Andy, k3wyc
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