Twin directories of pk232:

[DIR]  ftp://ftp.uni-leipzig.de/pub/kommunikation/hamradio/pk232/
[DIR]  ftp://ftp.funet.fi/.m/mirrors1/ftp.ucsd.edu/hamradio/packet/pk232/
[DIR]  ftp://nic.funet.fi/.m/mirrors1/ftp.ucsd.edu/hamradio/packet/pk232/
[DIR]  ftp://ftp.ucsd.edu/hamradio/packet/pk232/