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RADIOHF - Elecraft KSYN3A Updated Synthesizer NEW Elecraft KSYN3A K3 K3S UPDATED Synthesizer Option board Brand new Unopened package. $405 Delivered - check, PP FF ok. I can be reached through email if you have questions about this unit. Happy to help you if you are not 100% sure how to do this ! Larry K6RO If you want to upgrade your K3 to close to a K3S,you may want this. Or,if you are adding a sub receiver to your K3S,you will also need one of these. I have a matching K3 in another listing. These have been discontinued at Elecraft. Comes with manual. Please see pictures for more details. Local pickup is also fine. I can be reached through email if you have questions about this unit. Larry K6RO Listing #1744296 by K6RO Last Edited on 10/28/25 Submitted on 09/26/25 Submitted from syn-067-253-101-060.res.spectrum.com Click to Contact Back to Previous Page

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