I have a repeater receiver overload problem I am trying to cure. The
repeater is a 900mhz 927.7125/902.7125. There is an FM broadcast station 100
yards away 104.9mhz. The repeater works fine at another site. My transmitter
is a Motorola Purc 5000 running 75 watts the receiver is a converted
David, try using one or two band pass only cavaties in
the receive side instead of the BpBr type. The BpBr
filters often do not discriminate against signals far
off the pass frequency, and you may not be getting
enough rejection out of your input cavities.
73 - Jim W5ZIT
--- David Epley [EMAIL
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Receiver overload
I have a repeaterreceiver overload problem I am trying to cure. The repeater
is a 900mhz927.7125/902.7125. There is an FM broadcast station 100 yards away
104.9mhz.The repeater works fine at another
@yahoogroups.com
Subject: Re: [Repeater-Builder]Receiver overload
David,try using one or two band pass only cavaties in
the receive side instead of the BpBr type. The BpBr
filters often do not discriminate against signals far
off the pass frequency, and you may not be getting
enough rejection out
turned
off and the degradation is still here.
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright
Sent: Thursday, November 22, 2007 9:19 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: RE: [Repeater-Builder] Receiver overload
David,
Your
-Builder@ mailto:Repeater-Builder%40yahoogroups.com
yahoogroups.com
Subject: RE: [Repeater-Builder] Receiver overload
I just tried a pair of Celwave 8 inch bandpass cavities with no noticeable
improvement.
David N9CZV
From: Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com
I also share a site with an FM broadcaster. I use an all band notch
filter from Microwave Filter Company on my receivers ahead of the
preamp. Mine were custom made for 50 ohm input and output and are good
for about -40 dB.
http://www.microwavefilter.com/
David Epley wrote:
To my
and the degradation is still here.
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright
Sent: Thursday, November 22, 2007 9:19 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: RE: [Repeater-Builder] Receiver overload
David,
Your
Can you give us a list of all the transmitters that are at/near the
site? Ones that are on the air all the time such as the FM station.
Does your transmitter have to be keyed to get the desense?
73, Joe, K1ike
David Epley wrote:
I have a repeater receiver overload problem I am trying to
-Builder] Receiver overload
Can you give us a list of all the transmitters that are at/near the
site? Ones that are on the air all the time such as the FM station.
Does your transmitter have to be keyed to get the desense?
73, Joe, K1ike
David Epley wrote:
I have a repeater receiver
Lemmon [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, November 22, 2007 11:10 AM
Subject: RE: [Repeater-Builder] Receiver overload
David,
My first move would be to add a bandpass cavity in front of the receiver.
All cabling between the receiver and the RX output
David,
Have we ask if you can verify the problem is the FM transmitter???
73, ron, n9ee/r
From: Eric Lemmon [EMAIL PROTECTED]
Date: 2007/11/22 Thu AM 10:10:19 CST
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Receiver overload
David,
My first move
not have any effect.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of David Epley
Sent: Thursday, November 22, 2007 7:02 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Receiver overload
The only
degradation.
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Eric Lemmon
Sent: Thursday, November 22, 2007 11:10 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Receiver overload
David,
My first move would be to add a bandpass
Yes when broadcast goes off problem goes away
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Ron Wright
Sent: Thursday, November 22, 2007 11:14 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: RE: [Repeater-Builder] Receiver overload
David
Date: 2007/11/22 Thu AM 07:32:46 CST
To: Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com
yahoogroups.com
Subject: RE: [Repeater-Builder] Receiver overload
I just tried a pair of Celwave 8 inch bandpass cavities with no noticeable
improvement.
David N9CZV
From: Repeater-Builder
: Thursday, November 22, 2007 8:42 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Receiver overload
I have tried all the above. I even change out the mini UHF connector to an N
female when I use the maxtrac for repeater use. All cables are ¼ hardline.
When I use a 900mhz
[mailto:[EMAIL PROTECTED] On Behalf Of David Epley
Sent: Thursday, November 22, 2007 9:17 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: RE: [Repeater-Builder] Receiver overload
It is linked but there is only an STL link receiver at the site
From: Repeater
22, 2007 12:59 PM
To: Repeater-Builder@yahoogroups.com
Subject: RE: RE: [Repeater-Builder] Receiver overload
David,
This is definitely an interesting thread! I cannot think of a more suitable
topic to discuss in this forum.
You mentioned in your original post that you are using a converted
[EMAIL PROTECTED]
Date: 2007/11/22 Thu AM 11:26:10 CST
To: Repeater-Builder@yahoogroups.com
Subject: RE: RE: [Repeater-Builder] Receiver overload
I was thinking that maybe yourinterference might be a harmonic of their uplink
freq⦠Back tothinking some more. ;-)
From
Muncie Indiana
_
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Joe
Sent: Thursday, November 22, 2007 9:32 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Receiver overload
Are you sure that 104.9 (WINN?) is the only FM
Are you sure that 104.9 (WINN?) is the only FM station near your
repeater? Looking at the data, it looks like 100.3 WYGB is possibly on
the same tower. This is assuming that your repeater is in Columbus, IN.
73, Joe, K1ike
David Epley wrote:
I have a repeater receiver overload problem I am
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