Depends where you are and what you are using to try to listen to it.
I found this:
In a number of areas, particularly in areas where the signal from the main 1089 and 1053 kHz transmitters overlap with each other, Talksport operates a number of filler transmitters on different frequencies:
1071 kHz - Nottingham, Newcastle
1107 kHz - Merseyside, West Sussex, South Kent, Torbay, The Wash, Hampshire
The 1089 and 1053 kHz frequency was originally used by BBC Radio 1 between 1978 and 1994.
It is also transmitted across the UK on digitally via DAB digital radio, Freeview, Sky, Virgin Media, Freesat and TalkTalk TV. Talksport is also streamed online; however, due to rights restrictions on live coverage, some live sport commentaries are not available online.
Here:
http://en.wikipedia.org/wiki/Talksport
Hope it helps.