[Elecraft] K3S QST Article

[Don Wilhelm]

If the serial number is 10939 or greater, the change has already been 
installed.
At slightly lower serial numbers (10852 and above) it may or may not 
have been installed - it depends on whether it is a kit or factory 
assembly and whether it is a K3S/10 or K3S/100.
If you are in the 'questionable' serial number range, contact Elecraft 
support for detailed information.
If below S/N 10852, the change has not been installed.

73,
Don W3FPR

On 10/18/2016 10:29 AM, Bob Steding wrote:
> Is this there a SN after which these upgrades are automatically included in
> all K3S's?
>