After a small HW modification it is possible to listen to AM/FM demodulated signals, both in low and high input mode.
https://tinysa.org/wiki/pmwiki.php?n=Main.Listen

the need for this project was born to be able to visualize the curve of a 40 MHz filter with greater dynamics than the nanovna and also speed up the calibration of the filters in real time, there are no waiting times for each adjustment of a compensator or a nucleus.

In fig.1 the block diagram. fig. 2 loop output 1MHz -200 MHz.

Conclusion

The project performs its task adequately, the output signal is clean without spurious. The cost of this tracking is also low, we are at the level of a pizza. Furthermore there is no alternative, there is no tracking on the market for this small spectrum analyzer.

Due to copyright issues it is not possible to make it public until the project is published on QEX.

translated with Google

73 of I4BBO [Valentino Barbi](https://www.facebook.com/groups/2715786312037088/user/100082291094780/?__cft__0=AZXc6WCHWDgN-RKizecSKABf5VeuRt1d4RF1srZQy72RRFS5qkkDjXAP1BXO-3xVPf10DS41GD5sPp9sZLL82UeDBYIMQ_6Mhej0BapFmIGz7Zs4-LqsxYgjW3uyGbuT9PVrmgypgjUUpavhL56Vn9pIPsgxz1vj901Gin8PUM4BVcXsDRzGUDgcwQ_ZWV7MOkNFJvJCrCUw3USDkgcZsQ1C&__tn__=-K-R)

Using tiny SA RF spectrum analyzer to determine the resonance frequency of Crystal Oscillator. In this experiment the tiny SA calibration output frequency of 1 MHz is used to make the crystal resonate, and the “low” input of the tiny SA. 3 MHz does work also but 1 MHz works better, even frequency numbers weren’t much of a help in this test, unusable.

Short video demonstrating how you can using two tinySA and a mixer to observe WiFi and DECT signals

This is my experience in buying what turned out to be a counterfeit product via AliExpress and attempting to prove that the device is fake to AliExpress.
Hopefully if one person looks at this and avoids buying one of the fakes then it will have been worth the effort. Some might say that you deserve what you get buying from Ali but the point here is that the counterfeit units are useless for any kind of measurements!