LPE 200
From The RadioReference Wiki
LPE-200 Overview
ProVoice LPE Radios
If you own an LPE 200 and you want to verify that it has ProVoice capabilities, your feature code list must resemble the following:
In addition, you must have the C56 processor installed, you must be flashed with a ProVoice capable DSP, and you MUST have 1024Kb (1 Meg) of Flash memory on your LPE 200. Many LPE 200's do not have the C56 processor with the proper memory, and many radios have shown up on ebay with the correct feature code, but the incorrect hardware as outlined above. Be careful!