<div dir="ltr">Did this go away? I haven't been able to reach it lately. <div><br></div><div>Jeff/N0GQ</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Wed, Jul 11, 2018 at 12:44 PM Bart Kus <<a href="mailto:me@bartk.us">me@bartk.us</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
<br>
The recent Haystack work party managed to install a receive-only SDR up <br>
there. It is provisionally available for use by anyone at:<br>
<br>
<a href="http://44.24.241.60:8073" rel="noreferrer" target="_blank">http://44.24.241.60:8073</a><br>
<br>
I'll move it to a more permanent address, with proper DNS, at some <br>
future point.<br>
<br>
In the meantime, I'd like to solicit advice on how to minimize the QRM <br>
it's picking up. The noise is being emitted by the site itself, from <br>
the Ethernet cables and such. I've connected all the shields to site <br>
ground, but the emissions are still there. The current antenna is a <br>
ground rod with vertical whip.<br>
<br>
1) Is there a better antenna design that can serve the broadband <br>
(DC-30MHz) omnidirectional receive duties?<br>
2) Are there any suggestions on how to further minimize the noise being <br>
emitted by the site?<br>
<br>
Thanks, and enjoy!<br>
<br>
--Bart<br>
<br>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature">-=jeff=-<br></div>