I would also look at the termination of the Cat 5 cables as well as
looking at any router which is in the system-we have seen, as numerous
sites, that Wi-Fi switches and routers are not very well shielded and
produce a TON of garbage in the 140-172 MHz band at least-I am not sure
what components
We saw some noise from a similar setup, and it went away after
three things were done.
1. The wireless ISP replaced the Unshielded Twisted-Pair they
were using for the Ethernet and Power-Over-Ethernet to the units,
with Shielded Twisted Pair and properly GROUNDED the shield.
(Some ISP's will
Is the interference present on your receiver when your transmitter isn't
activated, or is it only there when your transmitter is transmitting?
I've seen several different types of TDD systems that cause near-field
interference when subjected to high power RF in VHF or UHF.
Matthew Kaufman
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