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<DIV><FONT size=2><FONT face=Tahoma>----Original Message-----<BR><B>From:</B>
aprssig-bounces@lists.tapr.org [mailto:aprssig-bounces@lists.tapr.org]<B>On
Behalf Of </B>Stephen H. Smith<BR><B>Sent:</B> Saturday, September 03, 2005
10:20 PM<BR><B>To:</B> TAPR APRS Mailing List;
victorf@windreader.com<BR><B>Subject:</B> [aprssig] Re: Serial port to USB
question<BR></FONT></FONT><FONT size=2><FONT face=Tahoma><SPAN
class=281473102-04092005> </SPAN><BR></FONT><SPAN
class=281473102-04092005><FONT face=Arial
color=#0000ff> </FONT></SPAN></FONT>Serial-to-USB converter "dongles" vary
wildly in how faithfully they emulate a real serial port. Especially how
they emulate (or don't emulate!) the hand-shaking lines of a real serial port
since these lines don't exist in USB. Some will work only with some programs,
others with nearly all. The Belkin converters are especially
notorious for poor compatibility and have been repeatedly blasted on this
list, the UIview mailing list and the MixW list.
<BR><BR>Some of the variables involved are: <BR>o
What IC chipset is the cable based on? <SPAN class=281473102-04092005><FONT
face=Arial color=#0000ff size=2>[Doug Ferrell] (cables are based on a
chipset?) </FONT></SPAN> <BR>o What IC chipset is
used for the USB ports on the PC? <BR>o Are the
PC's ports USB 1.1 or 2.0? <BR>o Are you going
directly into a PC's USB "root port" or through a USB hub or splitter?
<BR>o What operating system (Win 98SE, Win2K or WinXP)
are you using?<SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2>[Doug Ferrell] --< he is running
XP </FONT></SPAN><BR>o What patch or service pack
level is your OS at?<SPAN class=281473102-04092005><FONT face=Arial
color=#0000ff size=2> </FONT></SPAN><BR>o How many
other USB devices are in use at the same time? <BR>o
Does the application depend on accurate handshaking or does it only require the
basic RXD/TXD/Gnd three-wire serial hookup? [This often drives
sound-card-interface users to despair since the serial port's handshaking lines
are used for Radio PTT, CW keying, Receiver squelch detect, etc. ]<BR><SPAN
class=281473102-04092005><FONT face=Arial color=#0000ff size=2>{snip the rest of
the message}</FONT></SPAN></DIV>
<DIV><SPAN class=281473102-04092005></SPAN><BR><SPAN
class=281473102-04092005><FONT face=Arial color=#0000ff size=2>[Doug
Ferrell] </FONT></SPAN></DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2> Sorry but the bottom line, his USB to serial is working....
Vic stated in his message that saw the data in Hyperterm. USB-SERIAL
is working. So we are now down to configuration for APRSPoint. Service
packs,."root ports", IC Chipsets are a moot point for this particular
setup.</FONT></SPAN></DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2> </FONT></SPAN></DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2>....DOUG</FONT></SPAN></DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2>KD4MOJ</FONT></SPAN></DIV>
<DIV><SPAN class=281473102-04092005><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
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