Kool first broadcast on 28 November 1991 on the frequency of 94.5FM, from
Clapton, North East London. Kool has stated that it was
"the very first pirate station ever to play hardcore jungle".
Simon Reynolds would call it ''"London's ruling pirate station"
in an account of the beginnings of jungle in his book Energy Flash, whilst in State of Bass, Martin James would consider it "The single most important pirate station in jungle"''. By late 1992, Kool started to promote its own events, leading to the founding of
Jungle Fever in August 1993. Jungle Fever nights have been held at venues such as the
Astoria and
The Edge. In July 1993, its then-neighbouring station also broadcasting from the
Nightingale Estate,
Rush FM, was subject to a high profile raid by the authorities leading to media accusations of drug dealing at raves promoted by the two stations. In April 1996, Kool was featured in a
BBC First Sight documentary about pirate radio in London, in which its
Kool Skool club night also appeared. == Kool London and online radio ==