NOS OEM Kenwood Radio Toshiba Power Pack Frequency PA Brick Module # S-AV21-H NOTE - I do not know what applications this fits, but sounds like a lot of different ones! This is one you cant find anymore. They do not make them like they used to!! This is awesome. This has never been used and sitting on shelf for along time. FREE USA SHIP ** Please check out my other radio/communication equipment auctions. We bought off a business that was auctioning off all their stuff that they accumulated over the last 40 Years!!!