Real Life delivery formats
44.1/48 kHz @ 16/24 bits
Specification of the Broadcast Wave Format (BWF) - EBU
RF64: An Extended File Format for Audio - EBU
Standard Mixing Levels for Movie Theater, DVD, TV, Internet, Radio and Games
Most radio spots are done at 48K sampling rate, audio post in general really. Here in the US there aren't any broadcast level specs, most people just set their output limiters at -1 or 2. From there you just mix with your monitors at the correct level and make a nice sounding mix. The stations themselves handle the final compression before the signal is ...