<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Sorry, . . . BETWEEN the radio and the <font size="+3"
color="#ff0000"><b><u><i>TUNER.</i></u></b></font></p>
<p>Jim</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 12/31/2018 5:10 PM, Jim Sanford
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:7fe5ca9d-d2df-f3e2-8c05-0f0112ef200a@wb4gcs.org">*****
High Performance Software Defined Radio Discussion List *****
<br>
<br>
One counter-argument: What about the components in the low/band
pass filtering?
<br>
<br>
I ask, because I have repaired several bandpass filters for our
club that were blown up running 100 watts into an antenna with
high (2 or 3 SWR). We have been pounding on guys to put the
filter BETWEEN the<font color="#ff0000"> radio and the antenna . .
.
<br>
</font><br>
73, Good luck, & Happy New Year!
<br>
<br>
Jim
<br>
<br>
<a class="moz-txt-link-abbreviated" href="mailto:wb4gcs@amsat.org">wb4gcs@amsat.org</a>
<br>
<br>
<br>
On 12/31/2018 10:27 AM, Helmut Oeller wrote:
<br>
<blockquote type="cite">***** High Performance Software Defined
Radio Discussion List *****
<br>
<br>
HI Tony,
<br>
<br>
the final MOSFETs are specified with : 'no destroy' at a load
VSWR=20:1(All
<br>
Phase).
<br>
So no concern, if your meter even shows 3:1 equal 50 percent
reflected power
<br>
for a short period of time. On the other hand it makes no sense
to run a
<br>
antenna with 3 dB mismatch.
<br>
Excessive mismatch endangers the finials due to therminal stress
and/or RF
<br>
voltage issues, but usually no problem for the driver or
actually your
<br>
exciter board Hermes.
<br>
<br>
<br>
73, DC6NY
<br>
<br>
-----Ursprüngliche Nachricht-----
<br>
Von: Hpsdr <a class="moz-txt-link-rfc2396E" href="mailto:hpsdr-bounces@lists.openhpsdr.org"><hpsdr-bounces@lists.openhpsdr.org></a> Im Auftrag
von Tony Hagen
<br>
Gesendet: Montag, 31. Dezember 2018 10:46
<br>
An: <a class="moz-txt-link-abbreviated" href="mailto:hpsdr@lists.openhpsdr.org">hpsdr@lists.openhpsdr.org</a>
<br>
Betreff: [hpsdr] Reverse Power Tolerance
<br>
<br>
***** High Performance Software Defined Radio Discussion List
*****
<br>
<br>
<br>
_______________________________________________
<br>
HPSDR Discussion List
<br>
To post msg: <a class="moz-txt-link-abbreviated" href="mailto:hpsdr@openhpsdr.org">hpsdr@openhpsdr.org</a>
<br>
Subscription help:
<a class="moz-txt-link-freetext" href="http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org">http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org</a>
<br>
HPSDR web page: <a class="moz-txt-link-freetext" href="http://openhpsdr.org">http://openhpsdr.org</a>
<br>
Archives:
<a class="moz-txt-link-freetext" href="http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/">http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/</a>
<br>
<br>
</blockquote>
<br>
---
<br>
This email has been checked for viruses by Avast antivirus
software.
<br>
<a class="moz-txt-link-freetext" href="https://www.avast.com/antivirus">https://www.avast.com/antivirus</a>
<br>
<br>
_______________________________________________
<br>
HPSDR Discussion List
<br>
To post msg: <a class="moz-txt-link-abbreviated" href="mailto:hpsdr@openhpsdr.org">hpsdr@openhpsdr.org</a>
<br>
Subscription help:
<a class="moz-txt-link-freetext" href="http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org">http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org</a>
<br>
HPSDR web page: <a class="moz-txt-link-freetext" href="http://openhpsdr.org">http://openhpsdr.org</a>
<br>
Archives:
<a class="moz-txt-link-freetext" href="http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/">http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/</a><br>
</blockquote>
<div id="DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2"><br />
<table style="border-top: 1px solid #D3D4DE;">
<tr>
<td style="width: 55px; padding-top: 13px;"><a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=icon" target="_blank"><img src="https://ipmcdn.avast.com/images/icons/icon-envelope-tick-round-orange-animated-no-repeat-v1.gif" alt="" width="46" height="29" style="width: 46px; height: 29px;" /></a></td>
<td style="width: 470px; padding-top: 12px; color: #41424e; font-size: 13px; font-family: Arial, Helvetica, sans-serif; line-height: 18px;">Virus-free. <a href="https://www.avast.com/sig-email?utm_medium=email&utm_source=link&utm_campaign=sig-email&utm_content=emailclient&utm_term=link" target="_blank" style="color: #4453ea;">www.avast.com</a>
</td>
</tr>
</table><a href="#DAB4FAD8-2DD7-40BB-A1B8-4E2AA1F9FDF2" width="1" height="1"> </a></div></body>
</html>