Wouldn't the second harmonic of a 1/4 cavity
contain minimal F2 rf energy?
(The 3rd harmonic is another issue)
cheers,
skipp
Jim B. [EMAIL PROTECTED] wrote:
... because cavities can frequently
be resonant on the second harmonic (or higher),
which is what you're trying to filter out.
Eric, Jim, and others,
Thanks for the replies. Your explanations were as I expected but I
wanted to be certain. I am very familliar with circulators as we use
them quite often in microwave configurations. When I became aware of
isolators, I attempted to research them and concluded that there
Andy,
My understanding of British radio terminology is not complete, so I am a
little confused by your statement about the receive port of the
circulator.
In circulator (isolator) applications I am familiar with, the input of
the circulator connects directly to the transmitter output, the
From: Eric Lemmon [EMAIL PROTECTED]
Date: Thu, 07 Oct 2004 18:49:13 -0700
Subject: Re: [Repeater-Builder] Re Circulator
Andy,
My understanding of British radio terminology is not complete, so I am a
little confused by your statement about the receive port of the
circulator
HI
I have just changed my 70 cm repeater antenna over to a co-linear 8
dBd gain, was running 2 full wave dipoles stacked (reason..antenna
faults and not able to mount with correct vertical spacing).
When I was calibrating the circulator on the bench, all set up
perfectly, with the receive
: Thursday, October 07, 2004 9:57 PM
Subject: Re: [Repeater-Builder] Re Circulator
Should not your circulator be on the transmit side before the duplexer?
All of mine are.
73 Russ, W3CH
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Should not your circulator be on the transmit side before the duplexer?
All of mine are.
73 Russ, W3CH
- Original Message -
From: Andy Hearn [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, October 07, 2004 1:07 PM
Subject: [Repeater-Builder] Re Circulator
Andy
- Original Message -
From: russ [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, October 07, 2004 9:57 PM
Subject: Re: [Repeater-Builder] Re Circulator
Should not your circulator be on the transmit side before the duplexer?
All of mine are.
73 Russ, W3CH
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