I came across a mention of a one watt 2400 Mhz FM transceiver made by
Kenwood. There is a photo at http://www.rigpix.com/kenwood/tm2400.htm.

It appears to be a variant of the TM-642/742/942 tri-band rigs. I found
references to it a Japanese Kenwood site, where the TM-2400 was mentioned
among the rigs that use the various modules for the tri-banders.

Has anyone actually seen one? Was it produced? Is its band module
available separately? I suspect the answers to these questions are all
"NO" based on my web search.

73, Fred, K4DII