If you're interested in this Spectrum Analyzer you can check a review on
Kenneth Wyatt's EDN Blog:
<http://www.edn.com/electronics-blogs/the-emc-blog/4410523/Review--Amazing-USB-5-35-GHz-spectrum-analyzer>
While interesting he prefered TTI or Rigol Spectrun Analysers.
Ken is an EMC Consultant who has excellent as well a practical application
notes and reviews on the blog as well as his website:
<http://www.emc-seminars.com/index.html>
Here is his report on a visit to ARRL Headquarters. Note that they discuss
interference from the grow lights:
<http://www.edn.com/electronics-blogs/the-emc-blog/4434946/A-visit-to-ARRL-headquarters>
If you want to experiment with a USB Spectrum Analyzer I'd get one of these $20
DVB-T USB receiver sticks:
<http://www.nooelec.com/store/sdr/sdr-receivers/nesdr-mini-rtl2832-r820t.html>
and use it with the free evaluation version of Touchstone software:
<http://nutsaboutnets.com/touchstone/>
The DVB-T doesn't cover HF, the rtl2832 starts at 24Mhx, but the price is right.
There is lot's of good information on Ken's site.
Mike N2MS
----- Original Message -----
From: Paul Christensen <w9ac@arrl.net>
To: RFI Mailing List <rfi@contesting.com>
Sent: Thu, 25 Sep 2014 12:41:16 -0000 (UTC)
Subject: Re: [RFI] USB Spectrum Analyzer
Gary,
I think -110 dBm sensitivity is marginal for RFI detective work, especially
while working with low gain loops when trying to localize switch-mode
interference. Some of the loop preamps I've used produce much more
gain/noise than signal. For the money, I would look at one of the new,
compact SDR receivers that contain a basic spectrum analyzer function.
These will measure a -140 dBm noise floor. Of course, you don't have the
ability to change resolution bandwidth as one would have with a true
spectrum analyzer but that's perfectly adequate for RFI work.
Paul, W9AC
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