RF Porn

https://www.aliexpress.com/item/32882189639.html

Inside there is a 7.1796 Mhz crystal witch is multiplied by 256 to generate a 1838Mhz LO. Then there is a mixer, filtering with hairpin filter (obviously hand tunned), and a few LNA. There is also RF absorbing foam in the enclosure.

Strong LO leak.

Frequency : 2.4Ghz to 2.6Ghz.

CW 2.3Ghz

CW 2.4Ghz

CW 2.5ghz

CW 2.6Ghz

LO leak