Help with MASC operation on HT600E

[FTDX10ER]

Hello guys,

I have 2 x Motorola HT600 handhelds here, and I remember them both talking back to back with each other many years ago - only trouble is, I've forgotten how to enable & disable the MASC function.

Anybody know, please?

Many thanks in advance.

[PETNRDX]

I have no idea what you mean by MASC.
But I am pretty sure the HT600E is just an MT1000.
That is what I recall anyway.
I had several of them in UHF and reprogrammed them with MT1000 RSS.