<!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 6.00.2900.2802" name=GENERATOR></HEAD>
<BODY
style="WORD-WRAP: break-word; khtml-nbsp-mode: space; khtml-line-break: after-white-space">
<DIV dir=ltr align=left><SPAN class=687121418-19022006><FONT face=Arial
color=#0000ff size=2>Without any modulation at all, the MR6 puts out a signal of
roughly the same amplitude as the fundamental 12 MHz up. On the
spectrum analyzer I was using, it actually appeared to be 1 to 2 dB
HIGHER. If you're not using the standard crystal, I'd make very sure that
it's not putting out anything on 121.5. Of course, that's the most likely
way to make sure it DOES get found, but it's likely to be an expensive
find!</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=687121418-19022006><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=687121418-19022006><FONT face=Arial
color=#0000ff size=2>Scott</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=687121418-19022006><FONT face=Arial
color=#0000ff size=2>N1VG</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=en-us 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>Jason
Winningham<BR><B>Sent:</B> Sunday, February 19, 2006 5:13 AM<BR><B>To:</B>
TAPR APRS Mailing List<BR><B>Subject:</B> Re: [aprssig] Using a TNC as a CW
Beacon Only<BR></FONT><BR></DIV>
<DIV></DIV><BR>
<DIV>
<DIV>On Feb 18, 2006, at 11:16 PM, <<A
href="mailto:scott@opentrac.org">scott@opentrac.org</A>> <<A
href="mailto:scott@opentrac.org">scott@opentrac.org</A>> wrote:</DIV><BR
class=Apple-interchange-newline>
<BLOCKQUOTE type="cite">
<P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>I made an MR6 clone plus OT in one board, and actually launched one
example</FONT></P>
<P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>on a few party balloons, but it's got really awful spurious
emissions.<SPAN class=Apple-converted-space> </SPAN>And</FONT></P>
<P style="MARGIN: 0px"><FONT style="FONT: 12px Helvetica" face=Helvetica
size=3>that's not just my clone - it's just as bad on the genuine Ramsey
board.</FONT></P></BLOCKQUOTE></DIV><BR>
<DIV><BR class=khtml-block-placeholder></DIV>
<DIV>I added a large (1M, IIRC) resistor between the PIC and the MR6 to keep
it from splattering so bad.</DIV>
<DIV><BR class=khtml-block-placeholder></DIV>
<DIV>Those spurs can be useful, if your APRS payload fails and you're locating
via DF...</DIV>
<DIV><BR class=khtml-block-placeholder></DIV>
<DIV>-Jason</DIV>
<DIV>kg4wsv</DIV>
<DIV><BR class=khtml-block-placeholder></DIV></BLOCKQUOTE></BODY></HTML>