Hi Mike<div><br></div><div>Thanks again for the feedback. After further study, the versatility of the amp in terms of using multiple types of antennas and having switching control is amazing.</div><div><br></div><div>I ordered a preamp this morning.</div>
<div><br></div><div>I will let you know how it works out.</div><div><br></div><div>73</div><div><br></div><div>Rick ve3mm</div><div><br><div class="gmail_quote">On Sat, Sep 29, 2012 at 11:29 AM, Mike Stevenson <span dir="ltr"><<a href="mailto:mike.g8als@ntlworld.com" target="_blank">mike.g8als@ntlworld.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<div dir="ltr">
<div style="font-size:12pt;font-family:'Calibri'">
<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" target="_blank">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-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal"><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-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">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-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">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-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">I
also have Clifton Labs Reject filter ( 540- 1700khz) which I use with cuSDR for
multi RX.</div></div>
<div>
<div style="font-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">Also
works well on 136 khz.</div></div>
<div>
<div style="font-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">I
still need to try other loops and positions in the garden.</div></div>
<div>
<div style="font-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal"> </div></div>
<div>
<div style="font-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">73</div></div>
<div>
<div style="font-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">Mike
G8ALS</div>
<div style="FONT:10pt tahoma">
<div style="BACKGROUND:#f5f5f5">
<div><b>From:</b> <a title="richardstasiak@gmail.com" href="mailto:richardstasiak@gmail.com" target="_blank">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" target="_blank">Mike Stevenson</a> </div>
<div><b>Cc:</b> <a title="hpsdr@lists.openhpsdr.org" href="mailto:hpsdr@lists.openhpsdr.org" target="_blank">hpsdr@lists.openhpsdr.org</a> </div>
<div><b>Subject:</b> Re: [hpsdr] Active Loop Antenna</div></div></div>
<div> </div></div><div><div class="h5">
<div style="font-size:small;font-style:normal;text-decoration:none;font-family:'Calibri';display:inline;font-weight:normal">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>
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<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
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