In a signal that is sent out by a transmitter there is the 2nd harmonic but there are not 3, 4 and 5 harmonics. Is it normal situation or it depends on wrong transceiver settings?
Are you using a frequency selective network at the Tx output? What kind of levels are you seeing?
If you have an filter output that is the kind of behavior I would expect to see. Tx spectrum has a significant amount of spurious and the use of harmonic filters is recommended.
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