Cavity 1: -23DB Return Loss at Pass Frequency, 0.4DB IL at Pass Frequency, -30DB IL/Notch at Reject Frequency
Cavity 2 (middle cavity): -30DB Return Loss at Pass Frequency, 0.4DB IL at Pass Frequency, -30DB IL/Notch At Reject Frequency
Cavity 3 (closest to antenna port): -29DB Return Loss at Pass Frequency, 0.4DB IL at Pass Frequency, -29DB IL/Notch at Reject Frequency
The return loss of the first cavity seems off. At 0.4 dB IL I would expect the match to be around -30 dB as you saw with the other two cavities. Is that the cavity that seemed to be giving you problems before?
So I found an old post on the group and found I do indeed have the high split harness.
I'm hesitant to write off all of the problems you experienced to the harness unless it is damaged. And I wouldn't go any further until seeing what's up with cavity #1.
Repeat the same exercise for the cavities on the transmit side.
--- Jeff WN3A
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