I installed a remote receiver for a repeater this last summer at a site where a
900 mHz wireless distribution system, along with a 5.x gHz backbone was
located. The site also had a 2.4 gHz local wireless router installed.
In order to operate the remote receiver the squelch had to be as tight as it
would go. Even then as soon as an input signal goes away you would hear a
digital signal on the tail until the PL decoder runs down. The digital signal
sounds a lot like 1200 Baud packet.
This site is on a 60 ft tower, and a pager goes off on all channels as you walk
up to the tower. A talkie at the tower site can not copy the repeater over the
local noise from the digital system. About 200 ft from the tower the repeater
is strong enough to override the digital and the remote receiver is usable with
a talkie.
Needless to say, we are looking for another site for the remote receiver. It
is only useful for folks within a couple of miles with a talkie and within
about 6 miles with a mobile.
73 - Jim W5ZIT
--- On Thu, 11/20/08, n9lv <[EMAIL PROTECTED]> wrote:
From: n9lv <[EMAIL PROTECTED]>
Subject: [Repeater-Builder] 2.4 Ghz wireless radio and 145.410 repeater
To: Repeater-Builder@yahoogroups.com
Date: Thursday, November 20, 2008, 7:16 PM
I just had a 2.4 Ghz internet wireless antenna mounted at the top
of my
120' tower which is where the antenna is for the 145.410 repeater. I
am getting intermod into the system that causes it to hang open.
Anyone ever had these issues and how did you go about remeding the
problem. And I can't shut off the internet as the family would hang
me, and would rather not shut off the repeater.
There is besides the TXRX duplexers two DB4001 filter duplexers on the
system. Funny part is that once it starts the interference, I can
remove antenna from the receiver and it continues to intermod until I
kill the transmitter. I can hit the remote PTT and it will key the
repeater, no noise into the system until I reattach the antenna port to
the receiver.
Thanks.
Mathew
