Too much spurious signals

Last night I checked the spectrum using the icom prc-100. The results are not good.
Harmonics are only -35dbc. That is totally unacceptable. Some other spurious signals between 140 and 150MHz are present. They are -50dbc. That is not good enough.
The maximum level of a spurious signal is -60dbc.

Some of the signals may have been generated by the PRC-100 itself. I'll check the spectrum again using my new analyzer. However, I belief the harmonics are much too strong. I will check the low pass filter.

Some realignment could reduce some of the spurious around 145 MHz. I could add another bandpass filter if realignment does not help.