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Our rework-free K2 as­sem­bly method and our un-module op­tion by­pass headers kit have both got­ten rave reviews!  Check out this high-res PCB scan and our de­tailed as­sem­bly instructions, to see why our customers are so delighted.

We also offer “duplicate” K2 PCB parts kits for build­ing a stock K2.  These parts en­a­ble you to ful­ly pop­u­late your K2’s cir­cuit boards right from the start.  This approach yields a radio that is easier to upgrade with options, and potentially more re­li­a­ble.

With one exception, these parts kits are also just what you will need to add a “used” (pre-owned) op­tion to your K2.  The one ex­cep­tion is that you might end up with an ex­tra stand­off.

Our mic adaptor kit is also get­ting rave reviews!  Once in­stalled, this tiny device can be ac­cessed by re­mov­ing just the K2’s left side pan­el.  Its seven stan­dard jum­per schemes sup­port at least 55 pop­u­lar mi­cro­phones.

A PDF User’s Guide shows how to set up the adap­tor for your mic.  It also de­scribes the jum­per se­lec­ta­ble exter­nal bias circuit in de­tail.  A self-adhesive decal has the lay­out of the 3×7 jum­per block.  It goes in­side the K2’s left side pan­el for handy ref­er­ence.

The four-layer PCB has dual ground planes.  30 micro-inch gold plat­ing on all sock­et, head­er, and jum­per mat­ing con­tacts should en­sure many years of reliable op­er­a­tion.