Transponder Help - Buying guide

[Dudders]

Hi All,

Transponder help please!.

I am do to start racing soon and I have been told I need my own transponder. Due to race at present at Taplow and TORCH.

1: Yesteryear we used to pin a transponder onto the rear wing. Are these still about now?.

2: Do you get need different transponders for each different club/track?

3: Any suggested links to resellers of these or the manufacturers?

All great wonderfully received!

Cheers

Neil