The mod kits listed below will upgrade an existing, BUILT, Revision A (or Field Test Rev. XC) K2 to one equivalent to Revision B. (The revision number refers to the PC board revision.)

We recommend that you download the K2 A to B Upgrade Instructions (pdf) to review all of the changes before deciding which mod kits to purchase, as some of them are optional, and you may have installed some of them previously.

• BFOMDKT - K2 BFO Toroid & PLL Ref Osc Xtal Upgrade
• E850093 - 10M BPF, VFO/ALC Mod Kit for the K2
• XFILMDKT - Second Filter Upgrade 
• FWK2MCIO - K2 MCU F/W Upgrade to 2.04; K2 IOC Upgrade to 1.09 
• E850089 - Grill Cloth 
• E850138 - K2 Temperature Compensated PLL Reference Upgrade 
• K2ATOBKT - K2 Rev A to B upgrade parts: Remaining parts needed (after making the above mods) to upgrade your K2 from Rev A to Rev B. Includes K2 Revision A to B upgrade instructions. See the instructions for a list of parts. 

NOTE: If you have an UNBUILT Revision A K2 (s/n less than 3000) and wish to build it with new Rev B PC Boards, parts and manual, do not order the mod kits listed here. They only apply to existing Rev A K2s.
See K2 Revision B Component Upgrade Kit to order the K2BCOMPKT, F/W and Manual.