<HTML><HEAD></HEAD>
<BODY dir=ltr>
<DIV dir=ltr>
<DIV style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">
<DIV>Hi Rick</DIV>
<DIV>Yes I have one of the amps.</DIV>
<DIV>I am using a loop design by PA0SIM, see <A
title=http://www.pa0sim.nl/Alford%20loop.htm
href="http://www.pa0sim.nl/Alford%20loop.htm">http://www.pa0sim.nl/Alford%20loop.htm</A></DIV>
<DIV> </DIV>
<DIV>This is two crossed loops which via the control cct gives me loop A
or loop B or loop A+B or to be able to use the loops as vertical dipole.</DIV>
<DIV>I find loop A+B gives the best results on LF and some time the vertical
dipole is better at HF.</DIV>
<DIV>I have an inverted V trap dipole for 40, 80 and 160m, 60ft high in the
centre. The loop on 160m
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none"><FONT
size=3 face=Calibri> in the evenings is normally better than the dipole
and if there is QRN the loop gives 100% copy when R2 on
dipole.</FONT></DIV></DIV>
<DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">On
other bands the dipole is mostly better but when I have local Tv / power supply
interference the the loop wins.</DIV></DIV>
<DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">I
do find that I need the Rx attenuation set at 0db and ADC overload can occur
unless Alex filters used.</DIV></DIV>
<DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">I
also have Clifton Labs Reject filter ( 540- 1700khz) which I use with cuSDR for
multi RX.</DIV></DIV>
<DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">Also
works well on 136 khz.</DIV></DIV>
<DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">I
still need to try other loops and positions in the garden.</DIV></DIV>
<DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none"> </DIV></DIV>
<DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">73</DIV></DIV>
<DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">Mike
G8ALS</DIV>
<DIV style="FONT: 10pt tahoma">
<DIV style="BACKGROUND: #f5f5f5">
<DIV style="font-color: black"><B>From:</B> <A title=richardstasiak@gmail.com
href="mailto:richardstasiak@gmail.com">Rick ve3mm</A> </DIV>
<DIV><B>Sent:</B> Saturday, September 29, 2012 2:59 PM</DIV>
<DIV><B>To:</B> <A title=mike.g8als@ntlworld.com
href="mailto:mike.g8als@ntlworld.com">Mike Stevenson</A> </DIV>
<DIV><B>Cc:</B> <A title=hpsdr@lists.openhpsdr.org
href="mailto:hpsdr@lists.openhpsdr.org">hpsdr@lists.openhpsdr.org</A> </DIV>
<DIV><B>Subject:</B> Re: [hpsdr] Active Loop Antenna</DIV></DIV></DIV>
<DIV> </DIV></DIV>
<DIV
style="FONT-STYLE: normal; DISPLAY: inline; FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: small; FONT-WEIGHT: normal; TEXT-DECORATION: none">Hi
Mike
<DIV> </DIV>
<DIV>Thanks for the link. Very interesting loop amplifier and a lot of
other loop info.</DIV>
<DIV> </DIV>
<DIV>Are you using one of the amps?</DIV>
<DIV> </DIV>
<DIV>73</DIV>
<DIV> </DIV>
<DIV>Rick ve3mm<BR><BR>
<DIV class=gmail_quote>On Sat, Sep 29, 2012 at 3:50 AM, Mike Stevenson <SPAN
dir=ltr><<A href="mailto:mike.g8als@ntlworld.com"
target=_blank>mike.g8als@ntlworld.com</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>***** High Performance Software Defined Radio Discussion
List *****<BR><BR><BR>
<DIV dir=ltr>
<DIV dir=ltr>
<DIV style="FONT-FAMILY: 'Calibri'; FONT-SIZE: 12pt">
<DIV>Have a look at <A title=http://active-antenna.eu/
href="http://active-antenna.eu/"
target=_blank>http://active-antenna.eu/</A></DIV>
<DIV>This is a prebuilt and tested external amplifier and control.</DIV>
<DIV>Lots of information on the site.</DIV>
<DIV> </DIV>
<DIV>Mike
G8ALS</DIV></DIV></DIV></DIV><BR>_______________________________________________<BR>HPSDR
Discussion List<BR>To post msg: <A
href="mailto:hpsdr@openhpsdr.org">hpsdr@openhpsdr.org</A><BR>Subscription
help: <A href="http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org"
target=_blank>http://lists.openhpsdr.org/listinfo.cgi/hpsdr-openhpsdr.org</A><BR>HPSDR
web page: <A href="http://openhpsdr.org"
target=_blank>http://openhpsdr.org</A><BR>Archives: <A
href="http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/"
target=_blank>http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/</A><BR></BLOCKQUOTE></DIV>
<DIV> </DIV></DIV></DIV></DIV></DIV></BODY></HTML>