开云体育

I have QDX high band and low band radios. Both assembled by QRP Labs. I noticed that the high band was not receiving many stations, and thought the band must be closing - over a month or so. Then I received the low band from Hans and tried it on 20 meters, and Wow, was there a lot of traffic. I started comparing the two on 20 meters using the same power supply (10 volts into 12 volt radios) and the same antenna.
Below are screen shots of the spectrum on JTDX for both radios, the low band first, then the high band.


I next ran the RF Filter Sweeps for both radios and took screen shots, low band first, then high band

Both are running on v1.10.
This is the high band's filter sweep on 17M:

Where should I start looking to fix this?
Thanks,
Don KD5NRO