This radio can be addressed with the RTS-03 USB to serial adapter and Yaesu's CT-119 cable.
The USB-63 cable can be used as a control cable with this radio.
To preform the PEP 2000 Vertex Updates:
The MAIN Software Update : requires both the CT-119 cable (8 pin mini din to DB9 serial) and RT Systems RTS-03 USB to serial adapter.
The EDSP Softwa
Cabling for PEP2000 Firmware Upgrade|
RT Systems is here to offer support for the cabling to complete this process. We are not here to discuss the procedure or what it does or does not do. Any support for the PEP2000 upgrade process is pr