The first Kenwoods to offer that option were the TS440 and TS940.

Some people had home-made external boxes built for the 20 and 30 series 
rigs.

Lou is correct about the TS140, along with its nearly identical twin the 
TS680 being rather challenging.

Those 2 rigs have no key pad entry, no voice readout, and no physical dial 
stop at either end of their range.

Same for the TS430 and 930.


The 120, 130, or even the 180 can be operated right out of the box if you 
are willing to settle for an approximation of where you are as determined by 
the combination of the crystal calibrator and counting turns of the tuning 
dial.

This method also works for the 520/30 and 820/30 series, but you will need a 
way to tune the finals with these tube rigs.




Mike Duke, K5XU
American Council of Blind Radio Amateurs