Hello all.
I am trying to figure out if the duplexer we have put together is up to the
task or not. Here is the situation. We have four cavities 6.5 dia. one is a
vari-notch the others are simple reject cans. Two rejects are on the TX side
and one reject and the vari-notch are on the RX
RG-8 is not good for duplex. The braid will make TX noise and get into the
receiver. Cheap antennas can make the same problem. Test into a dummy load
right at the duplexer. If no noise then you know it's the feed line and/or
antenna.
6.5 inch dia cans are big ones so you should have plenty of
or you will allways have some desense
73
Steve
- Original Message -
From: kc0mlt kc0...@yahoo.com
To: Repeater-Builder@yahoogroups.com
Sent: Friday, May 21, 2010 3:28 PM
Subject: [Repeater-Builder] Duplexer on the cheap worries
Hello all.
I am trying to figure out if the duplexer we
and got 80dB and it worked
Steve
- Original Message -
From: Tim Sawyer
To: Repeater-Builder@yahoogroups.com
Sent: Friday, May 21, 2010 3:47 PM
Subject: Re: [Repeater-Builder] Duplexer on the cheap worries
RG-8 is not good for duplex. The braid will make TX noise and get
PM
*Subject:* Re: [Repeater-Builder] Duplexer on the cheap worries
RG-8 is not good for duplex. The braid will make TX noise and get into the
receiver. Cheap antennas can make the same problem. Test into a dummy load
right at the duplexer. If no noise then you know it's the feed line
Yes you do need to use good coax and decent connectors
73
Steve
- Original Message -
From: Tim Sawyer
To: Repeater-Builder@yahoogroups.com
Sent: Friday, May 21, 2010 4:17 PM
Subject: Re: [Repeater-Builder] Duplexer on the cheap worries
Yep, low isolation in the duplexer
On 5/21/2010 10:28 AM, kc0mlt wrote:
Hello all.
I am trying to figure out if the duplexer we have put together is up
to the task or not. Here is the situation. We have four cavities 6.5
dia. one is a vari-notch the others are simple reject cans. Two
rejects are on the TX side and one reject
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