Have you tried multiple implementations of the MMCX-NF cables, from different sources? If so and you’re seeing the same 5db deficit that would seem to clinch it.
Yes, we have tested 3 (as i remember) different
What kind of boards are you using in the picture,
Siemens D1218 + P3 800MHz (max 22W power consumption, v. high performance)
4 PCI(or mPCI) + integrated Intel 10/100 Ethernet without IRQ conflicts
[marksx@PEC_1] system resource irq> pri
IRQ OWNER
1 keyboard
2 APIC
3 [a5212_pci]
5 ether1
8 [rtc]
9 [a5212_pci]
10 [a5212_pci]
11 [a5212_pci]
14 IDE 1
and is that box indoor or outdoors?
“indoors” but in 105m above ground tower, and 1m from “window”