I remember interfering with somebody's 2-way setup and switching to
shielded cables helped.....but only after we grounded the shield. I
think I just peeled out extra drain wire and wrapped it around the
ground lug on an SS. We can imagine it was McCown Tech SS if we want.
You can also run fiber to a box at the top, and just have a 10' POE
jumper from the box to the equipment. Not saying that's the easiest
solution, but it would certainly reduce the amount of ethernet on the
tower.
------ Original Message ------
From: "Chuck McCown" <ch...@wbmfg.com>
To: af@afmug.com
Sent: 6/6/2017 4:32:59 PM
Subject: Re: [AFMUG] Interference on a repeater at 149 MHz
Ferrite and shielding.
-----Original Message----- From: Craig House
Sent: Tuesday, June 06, 2017 2:21 PM
To: af@afmug.com
Subject: Re: [AFMUG] Interference on a repeater at 149 MHz
I'm afraid you may be right. Yes we have killed all of the devices one
at a time and it appears the noise detected drops by a couple of DB
with each device we unplug. But since the devices are POE is there even
a solution to this??
Sent from my iPhone
On Jun 6, 2017, at 15:19, Chuck McCown <ch...@wbmfg.com> wrote:
Have you killed each of your devices one at a time to localize it to a
device?
I would suspect ethernet noise.
-----Original Message----- From: Craig House
Sent: Tuesday, June 06, 2017 2:17 PM
To: af@afmug.com
Subject: [AFMUG] Interference on a repeater at 149 MHz
We have equipment located on to Towers one is a water tower the other
is a
guyed110 foot tower. In both locations there are two way repeaters
located
on the towers that are receiving interference from what appears to be
our
equipment. Nothing is substantially common between the way the two
towers
are built out. The water tower had all of the equipment on top of the
tower
at one point and we have since moved all of our backhauls down to the
catwalk railing on the opposite side of the tower from the two-way
repeater
attempting to put some distance between our equipment and the repeater
but
has not solve the problem.
We have ePMP both 2.4 sectors and the 5 GHz Omni as well as some
ubiquity
air fiber five and Power beam M5 radios on the water tower all running
off
of net tonics 24 port switch and the microtik router. The other Tower
has
only a few m5 radios and and M2 Omni. It also has an air fiber 5X
amount of
lower on the Tower around 55 feet. Everything on this Tower has
ethernet
cable's running to the base where our equipment is running from an old
CMM
micro or their own power supplies in the case of the air fiber.
Everything
at this Tower is located inside of a metal communications cabinet at
the
base. In both locations we have removed old 900 FSK radios which were
a
source of interference but the problem seems to have come back. I'm
looking
for ideas on what others have found may be the source of interference
or
solution because I'm tired of throwing darts blindfolded and hoping I
find
the right Target.
Sent from my iPhone
