I also saw a signal of about the same level under the same operating conditions on my first run classic tiny. It could easily have been leakage from my 10 MHz GPSDO reference right below be in the basement lab.
On Wed, 16 Apr 2025 17:37:25 -0700
"Toni Ciscar via groups.io" <aciscar@...> wrote:
In my two tinySA ( original from Zeenko 2021 ) I can also appreciate something in 10 MHz by reducing the background noise by lowering the RBW , setting a scale of 2 dB / Div and fixing the measurement with a TRACE / CALC / AVER16. It's not a problem.
--
73
-Jim
NU0C
Jim Shorney