Hi Dwayne, I was an early adopter of Signal Hound, and I have the exact opposite opini= on. The early units had problems, which evidently they have mostly fixed. A= nd as the company grew, they completely abandoned me. Even though I support= ed them with good cash money at the beginning when they needed it most, the= re was no upgrade path for me and my orphaned unit. Not even a trade-in dis= count for the new version was offered to me when I asked. Bad taste in my m= outh, for sure.=20 Bottom line from me: "Avoid" Friendly regards, Bob ________________________________________ From: piclist-bounces@mit.edu on behalf of Dwayne= Reid=20 Sent: Tuesday, September 17, 2019 2:06 PM To: Microcontroller discussion list - Public. Subject: Re: [EE] Simple spectrum analyzer Hi there, Dave. I think highly of the Signal Hound line of spectrum analyzers. Their lowest-cost analyzer is WAY overkill for what you need **BUT** you can write your own application using their API and have exactly zero controls if you wish. The USB-SA44B analyzer is 1 Hz to 4.4 GHz <https://signalhound.com/produ= cts/usb-sa44b/> Interestingly, Signal Hound just release a customer success story where they used the SA44B in an unattended site to gather data for FCC compliance. The description of what they did is on the Signal Hound website. You may also be will to consider Ariel Rocholl's RF Explorer. His products are now available from Seeed and Digikey. I'm not sure if you recall, but Ariel is a long-time PIClister. Just food for thought. dwayne --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .