Have you figured what band they are on? Key used to supply lots of MPT1327 Band 3, Low Band, High Band and UHF radios, the Band 3 radios were only good for parts..
Connect Systems CS750 and CS800, Hytera PD-365, Motorola DP4600.
Raspberry Pi 2 and DV4Mini HotSpot.
AOR AR-DV1 Digital Voice Receiver / eSPY on ARD.
WS1088 / TRX-1 / Whistler Q /UBCD3600XLT.