[VHFcontesting] K3 with updated synthesizer board

[Tom]

Hello,

My main shack rig is an early serial number K3 (sn # 57!).  Not a K3S

While I putz on the low bands, my biggest concern is 6 meters.

Has anyone installed the upgraded synthesizer to their original K3 and 
does it make a reasonable amount of difference in weak signal (cw/ssb 
and digital modes) on 6 meters?

Thank you

Tom K8TB  (just back from EN86 with K8JH)