Bob it may be the same one. It measures 9 X 9 1/4 inches and is fairly heavy.
The output to input port loss is 20 dB at the ends of it's coverage and 40 dB
at the tuned frequency. The 3 dB bandwidth is about 3 Mhz.
Do you have tuning instructions?
Joe
At 03:17 PM 11/22/2004 -0800, you wrote:
:20 PM
Subject: Re: [Repeater-Builder] Help with circulator specs
|
| Joe,
|
| Actually, it's the opposite. The return loss will be maximum (highest
| numerically) at the operating frequency, meaning that the minimum energy
| is being reflected. It can be confusing to describe, because a proper
...
John VE3AMZ
- Original Message -
From: Eric Lemmon [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, November 21, 2004 5:20 PM
Subject: Re: [Repeater-Builder] Help with circulator specs
|
| Joe,
|
| Actually, it's the opposite. The return loss will be maximum
Hi John at all.
Here is a Sinclair link which has all the manuals for tuning instructions of
most, if not all, duplexers, filters, isolators etc.
http://www.sinctech.com/services.asp?i=135
73,
Tony VE3DWI
---
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I have a circulator from RJ Communications Products Inc
of Scottsdale, AZ. It's a model HC-152. It also has a logo
on it marked IJ. It has a marking tape on it which indicates
that the freq coverage is 140-180 MC. Can anyone confirm this
and know what the power rating might be?
Thanks, Joe
Joe,
I suspect that RJ Communications is no longer in business, so finding
tech data on that circulator may be difficult.
The typical ferrite circulator doesn't dissipate much power itself; it's
the load(s) attached to the reject port that determines its power
rating.
It's important that a
Eric thanks. If I looked at return loss, would the circulator operating
frequency be determined by the lowest return loss?
Joe
At 03:01 PM 11/21/2004, you wrote:
Joe,
I suspect that RJ Communications is no longer in business, so finding
tech data on that circulator may be difficult.
The
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