Hi Jeff, I found the problem. Had the chassis of both rx and tx trays tied together, guess I forgot they were isolated from ground. It seems it is the smallest things you overlook that cause the biggest anount of grief. Tied both A- together and the NHRC/M2 is working as required and all control tones doing fine, but, I seem to have lost the digital control for the fan. I will probably be mailing this into you for repair. I am certain now that was what the stray voltage took out. Thanks for the help to you and all those on the repeater builders group. Jay ----- Original Message ----- From: "Jeff Otterson" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Friday, February 18, 2005 6:32 AM Subject: Re: [Repeater-Builder] Re: M2 CAS
> > Hello Jay, > > The NHRC-4/M2 should work fine in your radio, as long as the proper > modifications are made to the systems board. The CAS line is buffered with > a transistor in the controller already. > > You might want to check that there are no other jumpers or modifications > made to the systems board on the radio that could be causing you this grief. > > We have sold hundreds of those controllers; the problem you are > experiencing is not typical. Something else is wrong. > > Regards, > > Jeff Otterson, N1KDO > NHRC LLC > > > At 11:32 PM 2/17/2005, you wrote: > > >Hi Coy, > > I have a lot of different info now on trying to get a cos signal to > >my nhrc4/m2 controller. Can you give me the schematic for using the 2n2222 > >transistor to buffer the cas line. Any and all suggestions will be used. > >Incidentally, the A- lines were not tied together, I had the TX on a 20amp > >power supply and the receiver on a deep cycle battery .....so no A- were > >tied together. > > > > I will try all ideas and want to thank everyone on this list for > >their suggestions. I will report back on what works for me. Thanks again. > >Jay > >----- Original Message ----- > >From: "Coy Hilton" <[EMAIL PROTECTED]> > >To: <[email protected]> > >Sent: Thursday, February 17, 2005 11:04 PM > >Subject: [Repeater-Builder] Re: M2 CAS > > > > > > > > > > > > > If the A- are tied togeather then that's not the problem. I use the > > > NHRC2 controller. The CAS doesn't like to source current. I always > > > use a 2N2222 or a NPN transistor and a 10k resistor connected to the > > > CAS line to buffer it and it doesn't load down the CAS line. > > > I hope this helps. > > > AC0Y > > > > > > --- In [email protected], "Jay" <[EMAIL PROTECTED]> wrote: > > > > Why didnt I think of that....knowing the ground is isolated...I > > > have been > > > > tying the chassis together instead of the A-.. what was I > > > thinking..Hmmm ! > > > > I will give it a try Bob... I am @ work @ firehouse right now but > > > am anxious > > > > to get home and check that out. Even if that doesnt cure the > > > problem , it > > > > makes things the way they should be, ground wise that is. Tnx > > > again Jay > > > > > > > > ----- Original Message ----- > > > > From: "Bob Dengler" <[EMAIL PROTECTED]> > > > > To: <[email protected]> > > > > Sent: Thursday, February 17, 2005 4:00 PM > > > > Subject: Re: [Repeater-Builder] M2 CAS > > > > > > > > > > > > > > > > > > At 2/17/2005 11:55 AM, you wrote: > > > > > > > > > > >Thanks for the info Bob, > > > > > > > > > > > > I may try the high side inject...sure couldnt > > > hurt, it > > > > > >would be much nicer to have one compact package than 2... as > > > far as using > > > > > >the RUS... that didnt work either... not even enough voltage to > > > fire up > > > > the > > > > > >controller... I may well have a controller problem with the > > > NHRC /M2. > > > > > > > > > > Seems like the ground between the external Mastr II & NHRC > > > controller > > > > isn't > > > > > good. Make sure the A- lines of both Mastr IIs are tied > > > together (not > > > > just > > > > > the chassis, which is DC isolated) before giving up on the > > > separate Mastr > > > > > II RX. > > > > > > > > > > Bob NO6B > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > >Yahoo! Groups Links > > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
