Put a scope on your COR signal and check to make sure it's going lower than 1V and higher than 3.5V. If not, some form of buffer will probably be needed. The CAT expects "close to TTL" input signals. Also make sure the power supply feeding the CAT stays high enough (typically above 14V) so the on-board regulators operate properly.
Bob M. ====== --- On Mon, 3/2/09, svfdcook <[email protected]> wrote: > From: svfdcook <[email protected]> > Subject: [Repeater-Builder] Re: MSF5000 CLB Eprom Programming Template > To: [email protected] > Date: Monday, March 2, 2009, 12:59 PM > I have reprogrammed my eprom and changed the Repeater > Control to OFF > on Rpt Act and Rpt Hold, since this will be controlled by > the CAT- > 400. I have also changed In-Cabinet repeat to OFF. > > The unit is now transmitting and receiving at the same > time, however > my COR (COS) is dropping in and out, suspect causing to > much of a > load on the circuit. Suggestions? Opamp? > > Thanks In Advance, > Ray > KE5VJH > [email protected] > > --- In [email protected], "Bob M." > <msf5kg...@...> > wrote: > > > > > > If this was a stand-alone repeater, instead of a > base-station, I'd > think you have the repeater-activate and repeater-holdin > parameters > set differently, such that it needs carrier and PL tone to > bring up > the repeater but the holdin is missing or OFF. > > > > However, in a base-station configuration, the only > field that has > meaning is the receiver audio control / activation. > > > > I'd suspect the signal polarity and/or level > feeding the CAT > controller is incorrect or needs a pull-up on the input. > What points > in the MSF are you using to supply the COR and CTCSS input > signals? > > > > Is the CAT set up to require CTCSS? There's an > AND/OR switch or > field setting in most CAT products. > > > > There's a test point in the SCB that has raw > receiver audio. Put a > scope or voltmeter on this point and verify that you still > have > signal coming through when the CAT keys the transmitter. > Also verify > the PTT signal coming out of the CAT is keying the > transmitter when > you provide the proper INPUT signals to the CAT. In other > words, > disconnect the COR and CTCSS lines and activate them > manually to see > if it's the CAT or the MSF that's not working the > way you want. > > > > Bob M. > > ====== > > --- On Sun, 3/1/09, svfdcook <rsc...@...> wrote: > > > > > From: svfdcook <rsc...@...> > > > Subject: [Repeater-Builder] MSF5000 CLB Eprom > Programming > Template > > > To: [email protected] > > > Date: Sunday, March 1, 2009, 8:57 PM > > > I am looking for some healp from users that have > already > > > programmed a > > > CLB unit as a repeater with external controller. > Any input > > > on > > > already programmed templates for a MSF 5000 CLB > > > (C74CL7106A) > > > including the appropriate options would be > greatly > > > appreciated. > > > > > > I have the eraser and eprom burner, and have > burned the > > > eprom a > > > couple of times based on information I have found > here and > > > else > > > where, but something must not be configured > correctly. > > > > > > I am attempting to connect a CAT-400 and have the > CLB > > > (eprom) > > > configued as a base station, however, whenever > the unit > > > receives a > > > good signal (CSQ&PL) from the signal > generator, the > > > receives appears > > > to go away once the transmitter goes hot. It is > acting > > > like it still > > > has the antenna switch, but that is not correct, > I have > > > removed it > > > and installed separate TX/RX for an external > duplexer. > > > > > > This is my first posting on a Yahoo group, so I > hope I have > > > done it > > > correctly, if not please advise. > > > > > > svfdcook > > > KE5VJH > > > rsc...@...
