[Elecraft] KAT3A vs KAT3 for K3 upgrade

[Russ]

Dear Elecraft:

I ordered a KAT3 upgrade for my (old fashioned) K3 - 12 days ago - along with a KSYN3A, unaware that the new and improved KAT3A would be available. I had Elecraft hold shipment on everything until the KSYN3A was out of backorder. If the KAT3A is compatible with my K3 (as well as the K3S), then PLEASE send me the KAT3A instead of the KAT3.

Thanks, Russ KD4JO