Thanks JimJim1, that looks like a low cost option that might work. I have a couple of portable DAB radios with analogue input options which could be used with the Griffin dongles. Does anyone know if a smart phone can send the same audio to two bluetooth links at the same time, hopefully close enough synchronised time wise that it doesn't create an echo in the final result? Or I could run some wires from one dongle to each radio.
I know that I will end up with double mono rather than stereo but for the task in hand that won't be an issue. At least it puts the control of the volume back into my pocket so I can mute or pause it when speeches or announcements are happening.
Rans6...............