Kenwood SWC-4 Coupler
Aus DL8RDS Wiki
The Kenwood SW-200 needs a coupler to measure the forward and reflected power. The SWC-4 does the job for 1200 MHz. There are four different types of couplers:
SWC-1 = 1.8 - 150Mhz SWC-2 = 140 - 450Mhz SWC-3 = 1.8 - 54Mhz SWC-4 = 1200 - 1300Mhz
I was lucky to buy the coupler unused and rather hidden in an Ebay auction.