My recollection of the 2100 is not so rosy. The frequency counter was built without a way to compensate for the radio's carrier-crystal frequency offset when changing modes. Wires ran through the adjustment holes in the counter's shield box from the mode selector. A sketchy afterthought that didn't even work that well. The display offset just wouldn't adjust quite right.
Biggest problem it had was brittle-wire disease. The usual stranded wires in the wiring harness would solder directly to a pcb foil, passing through a hole in the board like a component lead. Doesn't sound so bad, but the molten solder creeps up between the strands of the wire, "gluing" them together into a solid conductor. But the solder creeps only so far up the wire. Where it stops is a transition from solid wire to stranded wire. Causes brittleness, since any flex in the wire at that point creates a small-radius bend. And that's how you fatigue a metal to failure, is with small-radius bends. Wires that pass through the pc board and solder to it would just "spontaneously" break off at the first pothole of the day. Whatever function that wire had served when it was connected would go away.
Worst part was that if you disturbed the wiring harness just a little bit while making some small repair, the radio would spontaneously develop a new fault the next day when the last strand of one of those wires finally snapped.
The 2100 model may have evolved some improvements that I never saw, but the one I still have became a basket case before it rode too many miles in my air-cooled VW bus.
Besides, I never did get it to sound legit on sideband.
RCI solved this issue soon after by using single-row header-pin plugs to attach the wiring harness to the pc board. The spring-contact pins inside those single-row sockets have a clamp that puts all the strain of flexing onto the wire's outer jacket, not the conductor inside. So long as the header pins don't get oxidized or loose, this makes the radio a better long-term bet to be reliable.
73
Thx guys!
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