Re: Avarage usable sensitivity radiation measurement

1. Some digital circuit has very strong emission spurs, be careful about the noise, could you check the spectrum noise in very narrow band?
2. Osc harmonics must be filtered with LPF, there is some mixed spurs tool, you can use it to calculate the spurs in theory
3. When I worked in NOkia, the phone's PCB has several shilding can with different hole size, obviouly they have different shielding abilities.
4. Sometimes TX and RX needs work together, you only set in RX mode, that is not true, you should test in TRX mode.

Thank tony for reply.Please find the reply in blue that i found the case in several days ago.
Only one mode can work,it is not the same as mobile that we can use signal mode to control RX and TX on at the same time,it is FM modulation



Several days ago,for the network problem,it is a bit late to update the case .

It was sad earlier: "he test lab, your radio is way off spec. Also, your range testing also seems to confirm that. Conducted, your receiver sensitivity is excellent - however, radiated sensitivity is a different story."
If the above statement correct one likely problem - mismatched antenna

One problem that I have had in the past is that the center conductor of the antenna does not extend deep enough into the antenna jack on the radio and thus there is no connection between the radio and antenna. Your radiated sensitivity acts like you have no antenna on your radio.

But given that you have not provided any pictures of your radio, all of this is just conjecture.