Clare,
I too record a lot offair from the BBC (including R3 - I’m listening to Charlie Gillett’s World on 3 from last night right now) and I never experience anything other than true pitch and true speed.
My settings are
Project Rate 44100 Hz (bottom left hand corner)
Preferences:
Devices>Recording>Channels 2 (stereo)
Quality>Default Sample Rate 44100 Hz
Quality>Default Sample Format - I have mine set to 32-bit floating, but would recommend that you set yours to 16-bit
Those settings should enable you to connect a good FM tuner to your computer’s soundcard and get good quality recordings at CD quality.
It is possible that there is a timing fault on your computer’s soundcard and this may be giving the wayward pitch. In which case you may want to consider using an external soundcard (I use an Edirol UA-1EX for this). See this sticky thread for reviews of soundcards that are known to play well with Audacity: https://forum.audacityteam.org/t/sound-card-reviews/8375/1
WC