Mike,
The KRX3A includes the 220uF Solid Polymer Electrolytic Capacitor on the
output of the 8 volt regulator.
As far as I know, there is no other difference. This capacitor allows
extension of the K3 tuning range (with the modified KBPF3 option) to
100kHz. See
http://www.elecraft.com/manual/E740264%20KBPF3%20Modification%20Kit%20Instructions%20Rev%20A2.pdf
If you have a KRX3 and KBPF3 to modify.
73,
Don W3FPR
On 6/23/2017 5:44 PM, Mike Harris wrote:
An interesting question is just what is the difference between the KRX3
and the KRX3A.
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