OH! He's talking about the "oscillation" of the repeater keying up and down. I guess he's making a major assumption that the repeater hangtime is 0.5 to 1 second? Kind of a gross over-generalization in my opinion. When I think "oscillation" I think of it in terms of AF or AF, not duty cycle...
> -----Original Message----- > From: Repeater-Builder@yahoogroups.com > [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] > Sent: Friday, May 11, 2007 1:50 PM > To: Repeater-Builder@yahoogroups.com > Subject: Re: [Repeater-Builder] Re: Quasi-Simulcast? > > Hi Jeff, > > "A duplexer is working correctly when the sensitivity of the receiver > is not > degraded when the transmitter becomes active. There are test > procedures > to > check this out, but the explanation of these tests is beyond > the scope > of > this article. [OK, I'll agree with him so far] However, > should you hear > a > slow oscillation of the transmitter when it turns on and off > (a rate of > about 1-2 Hz rate on weak signals), then you do have duplexer > desensitization." > > What is this 1-2 Hz oscillation he's talking about? > > > A weak signal brings the repeater up, desensitization causes the > receiver to no longer hear the weak signal, the repeater > drops, and the > cycle repeats. > > 73, > Bob, WA9FBO > ______________________________________________________________ > __________ > AOL now offers free email to everyone. Find out more about > what's free > from AOL at AOL.com. > > > > > > Yahoo! Groups Links > > > > > -- > Internal Virus Database is out-of-date. > Checked by AVG Free Edition. > Version: 7.5.446 / Virus Database: 269.5.7/771 - Release > Date: 4/21/2007 11:56 AM > >
