[RFI] USB Spectrum Analyzer

Paul Christensen w9ac at arrl.net
Thu Sep 25 08:41:16 EDT 2014


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

-----Original Message----- 
From: Gary K9GS
Sent: Wednesday, September 24, 2014 11:03 PM
To: RFI Mailing List
Subject: [RFI] USB Spectrum Analyzer

This might be a useful RFI fighting tool.  Probably only a matter of
time before the price comes down.



Gary K9GS

Greater Milwaukee DX Association: http://www.gmdxa.org
Society of Midwest Contesters: http://www.w9smc.com
CW Ops #1032   http://www.cwops.org


This email is free from viruses and malware because avast! Antivirus 
protection is active.

RFI mailing list
RFI at contesting.com

More information about the RFI mailing list