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Re: ZS-407 Spurious Signals


 

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Hi Otto, Dave and Eric

I took a quick look at my new ZS-407 last night after reading your posts. I too have the the spur described with a terminated input. 533.775 MHz at -70dbm. I didn’t drill down into the carrier, but might do so today before I upgrade firmware to the latest version.

Also it appears it might be intermittent with scan and RBW settings. We’ll see.

Everything else works great. Only thing I noticed was the noise floor across the spectrum measures slightly higher than my other two Ultra ZS-405 units by several db, but I believe an earlier description of the specs mentioned that.





On Jan 22, 2025, at 9:50 AM, Otto Schellin via groups.io <oschellin@...> wrote:

?
Yes, I did notice some additional spurs in that tuning range that were at lower levels. Thank you for looking at that!
~Otto

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