<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.6000.16441" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff size=2>Hi
Andy!</FONT></SPAN></DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff size=2>I did
a quite simple, but effective thing when i had some similar "problem" with
G3RUH wirh DRCI SCC card..</FONT></SPAN></DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff size=2>The
problem is probably in the receiver output.. use HEX inverter with RxD and DCD
to have a clean "new" RxD.</FONT></SPAN></DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff size=2>This
perhaps give you some ideas to solve it..</FONT></SPAN></DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff size=2><A
href="http://www.qsl.net/eb7cjo/mods/g3ruhdcd.txt">http://www.qsl.net/eb7cjo/mods/g3ruhdcd.txt</A></FONT></SPAN></DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff size=2>(or
google for "sm6tky g3ruh")</FONT></SPAN></DIV>
<DIV><SPAN class=689511812-23052007><FONT face=Arial color=#0000ff size=2>73 de
Morgan, sm6tky</FONT></SPAN></DIV><BR>
<BLOCKQUOTE dir=ltr
style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #0000ff 2px solid; MARGIN-RIGHT: 0px">
<DIV class=OutlookMessageHeader lang=sv dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> aprssig-bounces@lists.tapr.org
[mailto:aprssig-bounces@lists.tapr.org] <B>On Behalf Of </B>Andrew
Rich<BR><B>Sent:</B> Wednesday, May 23, 2007 2:09 PM<BR><B>To:</B>
Aprssig<BR><B>Subject:</B> [aprssig] RF Modules for GPS data
transfer<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>An
obesrvation:-</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>1. I started
sending NMEA data over 433 MHz OOK (on off keying) with some
success.</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>2. Now I am trying
radiometrix modules, which seem to work great with 100% data
throughput</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2>but</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>when you are not
sending data, the module puts out gibberish.</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>I am wondering if
I shud be keying up the TX and using the carrier detect on the rx to get the
thing to work properley.</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>I was under the
impression a 1 or a 0 applied would swing the module to an idle
state.</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>comments
?</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>I have gone from
OOK to FSK.</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>Cheers
</FONT></SPAN></DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=718210512-23052007><FONT face=Arial size=2>Andy
VK4TEC</FONT></SPAN></DIV></BLOCKQUOTE></BODY></HTML>