UT-115 unit top side. Big chip is DVS Inc's AMBE2020 codec

UT-115 unit bottom side. CML GMSM modem chip and unit CPU visible and some logic glue.

IC-2200H front board, UT-115 option board connector. Pointing the /RMUTE pin where the D-STAR COS signal was extracted

IC-2200H with D-STAR repeater interface completed. Green led indicates radio power and yellow indicates D-STAR signal received

Radio is now receiving valid D-STAR signal. The D-STAR COS will not lit on analog signals.

Back side of the interface. D9 is for the repeater controller, the other wire is for RX audio from the radio to the controller. It was taken from ext. speaker output as there was no suitable line-level available from any of the connections.

Testing the setup with a IC-V82 D-STAR handheld and Arcom RC-210 three-port repeater controller

Interface finalized with informative stickers

Close-up of the interface in idle mode

Close-up of the interface when receiving D-STAR signal

Close-up of the interface back side

Inside the interface. What there really only is, is level converter for the RX audio and TTL buffer for the /RMUTE-signal fed to the repeater controller. Buffer drives the leds too.