I would be glad if you could simply purchase this service from go-list (K1XN) or someone else that would keep it very current.
ON4AOI provides a nice database (of unknown origin - but quite large in size) service at n/c on his web site, but keeping qsl managers really up to date and for the exact time periods is a really BIG JOB. RAC provides the QSL manager database pretty well, but it is cumbersome to use simply because it is not an integrated approach. The recent updates from 425DX by UA6JD is a nice touch as I would not take the time to enter all of this data, but it is current for most IOTA and DXepeditions. In summary it is a big job to compile and maintain qsl manager and qsl manager address databases and I would be glad to pay for this service, (as I do now for RAC and go-list, but a clean integrated approach is just not available at this time for DX4WIN or any other logging software. -----Original Message-----
