Suppose you had two units at the console. One a core unit, ie 1199 and the other a new mega unit with the transducers mounted on the transom correctly. If the core was transmitting at 455kHz and the mega was transmitting on a mega frequency, at the same time, do you think there would be interference between the two? Thinking of the 1199 for SI range and the mega for detail at less range, while doing lake survey work.
Mike