The audio/control breakout board is for a PRC-6.  Working on the radio when it is removed from the "banana" case is a lot easier using the board.  The miniature barrier terminal strip on the board is available from Fair Radio and duplicates the strip inside the case. The "junk box" power supply powers the PRC-6  and PRC-10 and  has a standard "Keyed" battery socket for the PRC-10. The PRC-10 can be attached by direct plug in or uses an extension cable. Voltage regulation in the power supply utilizes mosfets and zeniers.

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k4che