Recently I've obtained a Chipswitch IC over here in the states, its NOS and the price was good, I intend to install this into my Uniden 2830 with the main goal of getting it onto 12 meters as well as 10, the chip itself has a number of useful features which make it worth installing.
The chip is no longer in production sadly, so I'm rather pleased to have obtained one, I really don't know why I never got one back in the 90's.