Stan, Ugh! That will make it extremely difficult to figure out what is going on. What cards are in the cage? Typically it should have PL card and R1 Audio card (these are installed horizontally above the normal vertical cards), Squelch gate card and Station control card. It might also have a time out card and Line card. Is the pacific research controller with the repeater? I'm not sure where to tell you to start. Examine each card for any mods. Collect as much documentation as you can about what was done. Basically a controller requires a COR signal from the receiver, a PTT to the transmitter, Receiver audio going to the controller, TX audio from the controller to the transmitter, and a PLL indicate. If the controller is still there you can work backwards from there. There are several places where these signals are available. Either on individual cards or from the backplane. Look for additional jumpers on the backplane. In original condition there are NO jumpers from any of the backplane pins. Get yourself some manuals. I can try to help you as much as I can. The receive signal flow is from the receiver to the R1 audio card. This card has the local volume control and the squelch control. It provides the audio amp and squelch circuitry for the receiver. From the receiver the signal also goes to the PL and Squelch gate card. The PL card decodes (and provides receiver filtering if so jumpered) PL and sends it to the Squelch gate card. The squelch gate card processes the audio from the R1 card and sends it to the transmitter. It also provides the transmitter keying signal. The keying signal goes to the Station control card through the front panel card controls. From there it goes to the transmitter. There is also circuitry for delaying the de-key of the transmitter to accomodate the reverse PL burst. Bill - WA0CBW In a message dated 7/6/2010 9:03:12 A.M. Central Daylight Time, wa2...@taconic.net writes:
Thanks Bill, But that control does nothing either. This repeater was used with a Pacific Research controller before that has a squelch circuit built in. It did not come with a squelch card. I don't know where to look for the problem... Stan From: _william...@aol.com_ (mailto:william...@aol.com) Sent: Tuesday, July 06, 2010 9:31 AM To: _repeater-buil...@yahoogroups.com_ (mailto:Repeater-Builder@yahoogroups.com) Subject: Re: [Repeater-Builder] MSR2000 The squelch gate card control tells the transmitter when to transmit. The squelch control on the R1 audio module gates the receiver squelch noise. Bill In a message dated 7/6/2010 8:01:31 A.M. Central Daylight Time, _wa2...@taconic.wa2_ (mailto:wa2...@taconic.net) writes: Yesterday I finally plugged this MSR2000 in with a dummy load on it. It came on with an open squelch and went right into transmit mode. The squelch control on the squelch gate card did not close the squelch. I cannot find any way to close the squelch. If I pull the squelch gate card out it quiets the squelch. I hope it is not a defective squelch gate card. Any thoughts? This is my first experience with the MSR2000. Thanks Stan, WA2UET
