A method of, and receiver for, countering distortions in radio channels
due to intersymbol interference (ISI) and other non-linearities in a
radio link, comprises a first equalizer (48) using a training sequence
for equalizing one type of distortion, say that due to ISI, and a second
equalizer (50) coupled to recieve the equalizing output of the first
equalizer and using another training sequence for equalizing another type
of distortion. The first and second equalizers may be fractionally spaced
equalizers.