<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML xmlns="http://www.w3.org/TR/REC-html40" xmlns:o =
"urn:schemas-microsoft-com:office:office" xmlns:w =
"urn:schemas-microsoft-com:office:word"><HEAD>
<META http-equiv=Content-Type content="text/html; charset=us-ascii">
<META content="MSHTML 6.00.2900.5848" name=GENERATOR>
<STYLE>@page Section1 {size: 8.5in 11.0in; margin: 1.0in 1.25in 1.0in 1.25in; }
P.MsoNormal {
FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
LI.MsoNormal {
FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
DIV.MsoNormal {
FONT-SIZE: 10pt; MARGIN: 0in 0in 0pt; FONT-FAMILY: "Times New Roman"
}
A:link {
COLOR: blue; TEXT-DECORATION: underline
}
SPAN.MsoHyperlink {
COLOR: blue; TEXT-DECORATION: underline
}
A:visited {
COLOR: purple; TEXT-DECORATION: underline
}
SPAN.MsoHyperlinkFollowed {
COLOR: purple; TEXT-DECORATION: underline
}
SPAN.EmailStyle17 {
COLOR: windowtext; FONT-FAMILY: Arial; mso-style-type: personal-compose
}
DIV.Section1 {
page: Section1
}
OL {
MARGIN-BOTTOM: 0in
}
UL {
MARGIN-BOTTOM: 0in
}
</STYLE>
</HEAD>
<BODY lang=EN-US vLink=purple link=blue>
<DIV dir=ltr align=left><SPAN class=562282115-07082009><FONT face=Arial
color=#0000ff size=2>Scott, I use a Receiver Antenna Switch with Linear Amp T/R
made by KD9SV. Tha receive antenna is grounded on transmit. The switch has a
connection to the receive only port on the transceiver. Works great here no
problems. I don't see how there would be a problem switching between two
transceivers with your SO2R device.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=562282115-07082009><FONT face=Arial
color=#0000ff size=2>There may be other models available.</FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=562282115-07082009><FONT face=Arial
color=#0000ff size=2></FONT></SPAN> </DIV>
<DIV dir=ltr align=left><SPAN class=562282115-07082009><FONT face=Arial
color=#0000ff size=2>Roland NA5Q</FONT></SPAN></DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> lcc-bounces@louisianacontestclub.org
[mailto:lcc-bounces@louisianacontestclub.org] <B>On Behalf Of </B>Scott Dickson,
W5WZ<BR><B>Sent:</B> Thursday, August 06, 2009 10:37 PM<BR><B>To:</B>
lcc@louisianacontestclub.org<BR><B>Subject:</B> [LCC] Receive antenna switching
- Rhyme and reason...<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV class=Section1>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Hi guys!
<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">It is time for me to add
receive-only antenna switching to my thought process as I continue planning and
building. A few questions in my mind:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<OL style="MARGIN-TOP: 0in" type=1>
<LI class=MsoNormal style="mso-list: l0 level1 lfo1"><FONT face=Arial
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Is it necessary to
ground the receive-only antenna (or receive-only antenna port on the XCVR)
during same band transmit on any rig in the shack? I’ve heard that some
rigs only mute the receive-only antenna port, while the RF still hits the
front end of the receiver. What method are you
using?<o:p></o:p></SPAN></FONT>
<LI class=MsoNormal style="mso-list: l0 level1 lfo1"><FONT face=Arial
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">What method/device(s)
are you using to switch between multiple receive antenna, shared between 2
transceivers?<o:p></o:p></SPAN></FONT>
<LI class=MsoNormal style="mso-list: l0 level1 lfo1"><FONT face=Arial
size=2><SPAN style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">Are any of the RF
switching devices automated, i.e. using a band decoder to drive
switching?<o:p></o:p></SPAN></FONT> </LI></OL>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">I’m still working diligently on the
station here at W5WZ. If you are interested in the progress, please visit
my journal page:<o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><A
href="http://w5wz.com/main/page_my_journal.html">http://w5wz.com/main/page_my_journal.html</A><o:p></o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial"><o:p> </o:p></SPAN></FONT></P>
<P class=MsoNormal><FONT face=Arial size=2><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: Arial">--Scott,
W5WZ<o:p></o:p></SPAN></FONT></P></DIV></BODY></HTML>