LPT ports do not have a priority and do nothing by themselves. They simply
respond to the commands sent by a driver.
There may be some printer drivers which do interfere with sending CW on the
LPT port.
----- Original Message -----
From: <K4IA@aol.com>
To: <writelog@contesting.com>
Sent: Tuesday, February 19, 2002 16:11
Subject: [WriteLog] Chopped CW
> Could the problem be the LPT1 port?
>
> Seems to me that printers print a lot slower than they receive data. Also
> printers have their own buffers. Therefore, printers are designed to
> accepting chunks of data sent at high speed but sporadically. That would
> lead computer designers to give the LPT1 port a very low priority compared
to
> other tasks and communication going on in the computer -- the printer is
so
> slow the data can always catch up.
>
> Now if you're keying the rig through the LPT1 port, wouldn't the port
> continue to behave the same way? Since CW (or any communication meant to
be
> transmitted on the rig) is sent to the rig in "real time" and at a fairly
> slow rate (1200 bps - 9600 bps), anything other than full and complete
access
> to LPT1 makes a big difference at the rig. There are no buffers in the
rig
> to hold data and you don't have any delay like a slow printer.
>
> Would the serial port behave better? Can WriteLog be configured to use a
USB
> port? I am neither a computer not a WriteLog expert but leave the issues
to
> others who may be able to shed some more light (not flame) on the issue.
>
> Radio K4IA
> Craig Buck
> Fredericksburg, Virginia USA
> QRP ARCI #2550 FISTS #6702 CC 788 Diamond #64
> K1 #470 K2 #2460
> ----------------------------------------------
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>
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>
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