No wonder these aren't produced anymore.
You can say that again. (Insert "my head hurts" smiley here.) Only a Japanese company in the '80s would dare producing a key switch as complex as this.
Other examples?
Well, this one took years to fine-tune after an initial recall of the first production run:
(Oh, and while innovative, operation was not nearly as user-friendly as on the model it replaced. 't was a time for major goofs in that area, like godawfully slow 1-kHz-only step tuning on shortwave for some models, and muting generating pop noises on every tuning step.)
And at least in the '80s and '90s, you could bet that ICOM transceivers would be the most complex of the bunch (though not necessarily the smartest - they used quad conversion to pull off some things that others did with double conversion). Looks like they still are today, in fact. They had an awful lot of problems with early 2-layer PCBs in late-'70s models, the vias sucked. On consumer level, this still was a problem for the early Philips CD players in the mid-'80s.
