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Sent: Saturday, August 30, 2008 3:12 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] RE: [EMAIL PROTECTED] VHF Duplexer
At 8/30/2008 10:22, you wrote:
This question is best posed on the Repeater-Builder list
(Repeater-Builder@ mailto:Repeater-Builder%40yahoogroups.com
At 8/30/2008 11:52, you wrote:
Tom,
According to my CommShop duplexer isolation calculation software, a 600 kHz
split at 2m with a 50 watt transmitter and a receiver with a (my assumption)
sensitivity of 0.35 uV, about 87 dB of isolation is necessary to achieve no
desense. If you intend to use
At 8/30/2008 10:22, you wrote:
This question is best posed on the Repeater-Builder list
(Repeater-Builder@yahoogroups.com), but I know the answer: A mobile (notch)
duplexer will not work at a 600 kHz split. Even a 3 or 4 MHz split results
in unacceptable performance.
I have built a portable
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