[TenTec] Omni VI versions: What's the difference?

[Ben K8DIT]

Ken,            Option 0 = Omni Six
                   Option 1 = Omni Six Plus firmware chips and button
changes by user
                                    was factory shipped.
                   Option 2 = Omni Six Plus Option 1 installed by Factory,
                   Option 3 = Omni Six Plus factory installed board for
2-9Mhz. filters. plus
                                    firmware chips in Option 1 and 2.
                   Omni Six Plus = Never had been an Omni Six but
electronically         identical to the Omni Six in every other way and
carries the Plus badge on the front cover. Later models differed in that
some of the boards were SMT.