[Help-bash] Killing subshells

[Paul Wagner]

Dear bashers,

I am trying to create a simple script to schedule wget to grab radio 
programmes.  Since I occasionally lose the connection, I ended up with 
something like

function job() {
    i=0
    while true
    do
        i=$((i+1))
        wget -a "$name.log" -O "$name-$i.mp3" "$url"
    done &
    sleep $length
    kill %
}

while true
do
    t=$(date '+%M %H')
    while read startmin starthour length url name
    do
        [[ $t == $startmin' '$starthour ]] && job &
    done < conf-file
    sleep 60
done

Unfortunately, the kill does not end wget.  What am I missing?

Kind regards,

Paul