K4 UPGRADE KIT TO K4D, $25 SPECIAL DISCOUNT
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The K4 to K4D Upgrade converts a base K4 into a fully independent dual-receiver K4D. This procedure involves plugging in two PC boards, adding two cables, and three machine screws.
![K4TOK4DUPG_K4 Upgrade Kit to K4D, $25 Special Discount](http://elecraft.com/cdn/shop/files/k4-front-white-bg-product_69e22ed5-ede5-49b9-880f-fc3704888000.jpg?v=1710962900&width=1445)
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