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RE: DIFAX Source

I am working on the Difax issue.  I am trying to get an indication on
what I need to do to get our FTP server to act as an LDM server for
feeding Difax data.  It appears I am firewalled off on port 388 and I'm
pursuing this with the networking people at Unisys.

I have two methods.  First the FTP server does get all the Difax charts
in a compressed PCX format from our primary feed.  Second, I'm
downloading charts from the NWS FTP site.  Right now, I'm providing this
data is both PCX and PNG formats.  I'm going to stay away from GIF for
obvious legal reasons (even us at Unisys stay away from GIF).  Either of
these sources could be pqinserted into the IDD from our end if we
resolve firewall issues.

There could be a small issue with bandwidth.  It appears Alden feeds
Difax to a number of customers directly.  It is unlikely we can feed
more than a couple of sites given bandwidth concerns.  We might forward
the data to a single controlled LDM which can then go to the various
Unidata sites.  Of course, this might be a moot issue if the T3 gets
installed here.

Once I have this tested, I need to talk to Mike Porreca and Ron Guy on
how we might work with Unidata on this issue.

________________________________________________________
Daniel Vietor               Mail: address@hidden
Unisys Corp                 Title: Engineer/Meteorologist
221 Gale Lane               Phone: 610-444-2407
Kennett Square PA 19348     Fax: 610-444-2420