Batboard

I have a Motorola FLN3177 Micom Vocoder that I have interfaced to my Micom 2ES and it is working. The question I have is that it appears to be in encrypted mode with the ENC led on, how do you take it out of encrypted mode? I have the four page manual but it is useless.

Does anyone have a vocoder that they would like to try a digital voice HF contact on the ham band to give it a try???

Thanks,

Bill