MC7455 antenna issue

I measured the impedance on rf ports and I found no impedance (0 Ohm) in main port and 1.3 Ohm on aux port. This seems strange, anybody could verify please if his board has same values?

Hi @antoniobova,

I’m not sure if you have read this document yet: 4116238 AirPrime MC7455 Product Technical Specification r14.pdf (1.9 MB) .

I observe that the impedance on RF ports is mentioned in section 4.RF Specifications. Hope this information will be helpful for you.

Thanks,

Yes I already read it but it speaks only about antenna impedence, different thing…

I found a command to set AUX as primary antenna but now I can’t find it, do you know it?

Hi @antoniobova,

You can use the command !RXDEN in document “4117727 AirPrime EM-MC74xx AT Command Reference r4.pdf” in page 63 section 4.Diagnostic Commands (4117727 AirPrime EM-MC74xx AT Command Reference r4.pdf (1.4 MB) ).

Thanks,