[Elecraft] MC-42S Mic

[nz0t at cox.net]

I am using the MC-43 mic from my TS50 on my K2 and it works great.  However, the TS50 is used at our lake cabin and I don't want to carry the mic back anf forth so I'm looking for another Kenwood mic.  I would prefer an MC47 which has the Px buttons that work on the TS50 (leaving the MC43 on the K2) but I may have a good deal on an MC-42S.  Is the 42S compatible with the other Kenwood hand mics and thus usable with the K2?  I think it's the mic that came with the TS-430S and 440S.