Sorry for being really late here. I have not tested the RF usb wireless link with RC8 but would image that it might work. With my RC8, I am using the RCSimconnector, with a Futaba-compatible receiver (lower cost than original Futaba) connected to it.
Ikarus RC SimConnector (Ikarus p/n 3031100)
Customers can order this online from
http://shop.ikarus.net if based in Europe,
or
https://www.amazon.com if based in the USA. You may download the manual for the RC SimConnector here
manual-simconnector-shop-ikarus-usa.pdf