Yes, Peltor makes a dual PTT that connects to one headset and two radios, and you can get it in a Kenwood pinout. I use one with two Wouxun radios and connect to my Comtacs or my TEA headsets.
You can choose to transmit on either radio, and you receive on both radios at the same time.
I believe I still have one that has dual MBITR connectors somewhere. I used to buy them on Ebay and have someone convert them but he does not do that anymore, so I just have them made by Peltor.
Getting one with Kenwood pinouts from Peltor will cost between $320 and $365 USD, and you still have to supply the headset. Note that you can also get a U94 style dual switch from TEA as well and it would be similarly priced.
