Darren,
When I just set up a flight in the Saab as a test the radios were all on by default. Do you start flightsim from a cold & dark setting? If you load up the MSFS default flight and switch planes to the Saab, do you still have no radios?
Please give a little more info about your flight and settings and hopefully we'll be able to solve this issue - it's a very nice plane if you can get it all to work...
