<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii">
<TITLE>Nachricht</TITLE>
<META content="MSHTML 6.00.6000.16587" name=GENERATOR></HEAD>
<BODY>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff
size=2>Peter,</FONT></SPAN></DIV>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff size=2>thanks
for the additional information. Up to now I only found references to
Communication Concepts.</FONT></SPAN></DIV>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff size=2>You
are right that the transformers are cheap and I do not intend to build the
transfomers myself. </FONT></SPAN></DIV>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff size=2>But
nevertheless I need complete mechanical data for the layout of pcbs where they
are used as I have not yet samples on my desk to measure.</FONT></SPAN></DIV>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff size=2>73,
Gerd</FONT></SPAN></DIV>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff
size=2>DJ8AY</FONT></SPAN></DIV>
<DIV><SPAN class=421290513-14022008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=de dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> Peter
[mailto:Peter@GEHughes.us] <BR><B>Sent:</B> Thursday, February 14, 2008 1:35
PM<BR><B>To:</B> g.loch@nt-electronics.de<BR><B>Cc:</B>
hpsdr@lists.hpsdr.org<BR><B>Subject:</B> RE: [hpsdr] Transformers from
Communication Concepts<BR><BR></FONT></DIV>Gerd<BR>I think they went into
businesss to simply make all of the Motorola APP notes a reality... and have
been doing so since the mid 80's<BR>If you notice their amps are exact
duplicates of the ones described in the App notes... They are even
mentioned as a source of kits in the App notes.. along with references to RF
Concepts..Which supplied the original Transformers<BR>The Original APP Notes
were created at Motorola in Phoenix, Az by Helge Granberg who was also an ARRL
Technical Advisor ...RFConcepts is in Peoria, AZ.. and Communication Concepts,
in <FONT face="Trebuchet MS, Arial, Helvetica">Beavercreek, Oh</FONT>, is
quite close to Dayton.. Lots of Hams there.... and in Az...<BR><BR>Just one
big happy family...<BR>For the very low cost of the transformers ($US~6.00)
are you sure you want to waste you time trying to build and tune one? I think
it would cost more to simply try and procure all of the parts you
need..<BR><BR>Peter<BR>N7BMG<BR><BR>
<BLOCKQUOTE
style="PADDING-LEFT: 8px; MARGIN-LEFT: 8px; BORDER-LEFT: blue 2px solid"
webmail="1">-------- Original Message --------<BR>Subject: RE: [hpsdr]
Transformers from Communication Concepts<BR>From: "Gerd Loch"
<g.loch@nt-electronics.de><BR>Date: Thu, February 14, 2008 7:09
am<BR>To: "'Peter'" <Peter@GEHughes.us><BR>Cc:
<hpsdr@lists.hpsdr.org><BR><BR>
<DIV><SPAN class=417260612-14022008><FONT face=Arial color=#0000ff
size=2>Peter,</FONT></SPAN></DIV>
<DIV><SPAN class=417260612-14022008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=417260612-14022008><FONT face=Arial color=#0000ff
size=2>thanks for yor link. That helps of course.</FONT></SPAN></DIV>
<DIV><SPAN class=417260612-14022008><FONT face=Arial color=#0000ff
size=2>What is then the business of Communication
Concepts?</FONT></SPAN></DIV>
<DIV><SPAN class=417260612-14022008><FONT face=Arial color=#0000ff
size=2></FONT></SPAN> </DIV>
<DIV><SPAN class=417260612-14022008><FONT face=Arial color=#0000ff
size=2>73, Gerd</FONT></SPAN></DIV>
<DIV><SPAN class=417260612-14022008><FONT face=Arial color=#0000ff
size=2>DJ8AY</FONT></SPAN></DIV>
<BLOCKQUOTE dir=ltr style="MARGIN-RIGHT: 0px">
<DIV></DIV>
<DIV class=OutlookMessageHeader lang=de dir=ltr align=left><FONT
face="Tahoma
" size=2>-----Original Message-----<BR><B>From:</B>
Peter [<A href="mailto:Peter@GEHughes.us]">mailto:Peter@GEHughes.us]</A>
<BR><B>Sent:</B> Thursday, February 14, 2008 12:45 PM<BR><B>To:</B>
g.loch@nt-electronics.de<BR><B>Cc:</B>
hpsdr@lists.hpsdr.org<BR><B>Subject:</B> RE: [hpsdr] Transformers from
Communication Concepts<BR><BR></FONT></DIV>Gerd<BR>Try:<BR><A
href="http://www.rfpowersystems.com/prod02.htm"
target=_blank>http://www.rfpowersystems.com/prod02.htm</A><BR><BR>This the
place which actually makes the Transformers used by Communications
Concepts..<BR>They have dimensions listed for their current line which
should help you as far as just straight mechanical .<BR>Also look at
Application note AR347 on Communications Concepts for a write up on the
amp.<BR><BR>Peter Hughes<BR>N7BMG<BR><BR>
<BLOCKQUOTE
style="PADDING-LEFT: 8px; MARGIN-LEFT: 8px; BORDER-LEFT: blue 2px solid"
webmail="1"> </BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BLOCKQUOTE></BODY></HTML>