The MAX7042 can be tuned to one of four frequencies using the 2 frequency-select bits FSEL1 and FSEL2:308, 315, 418, and 433.92MHz.
Is it possible to use the RX center frequency with the following frequency combinations ?
Is there something wrong with the internal circuitry?
RX:312.5 MHz , xtal REF:9.43125 MHz , LO:301.8 MHz(9.43125*32) , IF:10.7 MHz
and select L2 and C9 of the LC tank filter to resonate at the RF input frequency,312.5 MHz.
[edited by: emassa at 6:39 PM (GMT -5) on 20 Jan 2023]