[WriteLog] TS-570DG do I need an interface box for CW

Wayne, W5XD w5xd at writelog.com
Tue Nov 25 13:56:30 EST 2008


> To send CW with WL do I need some type of interface box 
> between my rig and computer that's running XP?

Yes, you'll need something. WriteLog has supported sending CW on the
RTS line of an RS-232 interface since its very early versions in the
late 80's. 

But.....

I really don't like trying to support that any more. Sending CW that
way requires the OS to give WriteLog response times on the order of
1 msec, else your CW will be garbled. All Windows versions are actually
capable of this, but most of us have all kinds of "stuff" installed
on our machines now taking up cycles, so I would trust only the
most PC savvy (or those running the oldest machines with their
original OS installed) to be sure they actually have found and 
disabled all the drivers, virus checkers, malware, browser plug-in's, 
etc. etc. etc. that compete for CPU cycles just at the critical time 
that turns a dit into a dah. You might be surprised at what kind
of supposedly useful software can do this (network drivers, IDE
CDROM drivers, USB hub drivers, virus checkers, etc. etc. etc.)

There are a number of devices on the market that can do this
(google "winkey" for example). We used to sell one just for WriteLog,
but the MK-1100 is out of production now.

Wayne, W5XD



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