PC16 can come in without a call
for ($i = 2; $i < $#field; $i++) {
my ($call, $confmode, $here) = $field[$i] =~ /^(\S+) (\S) (\d)/o;
- next if length $call < 3 || length $call > 8;
+ next if !$call || length $call < 3 || length $call > 8;
next if !$confmode;
$call = uc $call;
next if DXCluster->get_exact($call); # we already have this (loop?)