[Amps] Tiny SA

[Jim Brown]

On 4/26/2023 2:23 PM, Gary Schafer wrote:
> Not a narrow enough bandwidth @ 2.6khz to see I’m products of a two tone signal.

All three of the SDRs I referenced in the link yesterday, as well as a 
P3, with or without SVGA, are excellent for displaying the bandwidth of 
signals -- IF you know what you're doing. Two-tone measurements are not 
a great way to look at IMD, because occupied bandwidth depends on a LOT 
more than IMD -- it also depends on the nature of the driving signal, 
like waveshape of CW and RTTY keying, and the method used to generate 
SSB. This pdf shows what I did with P3/SVGA in 2015.
http://k9yc.com/P3_Spectrum_Measurements.pdf

This shows P3 (before SVGA).

http://k9yc.com/K6XXAmpTalk.pdf

73, Jim K9YC