Looking for schematic for Midland 78-100 Marine Radio


New to the forum, I am a (former) long-time Motorola Two-Way Comm dealer/service tech (from the Second Class Radiotelephone Operator’s License days).

A friend, and antique radio aficionado, has a Midland 78-100 which transmits, but apparently has no receive functions. Audio output is intact, squelch functions normally. I do not as yet have details regarding which type of antenna is being used. The schematic which he has is virtually unreadable (poor scan quality).

Would one of the members of this forum be kind enough to point me in the direction of a readable schematic?? I have attached photos below in the hope that they may jar someone’s memory.

Many thanks!