Old topic, but I thought I would start here rather than a new thread. I am also having difficulties in that when I plug my repeater cable between my two SM50s, the transmit radio immediately goes into transmit. I am fairly certain I have everything programmed properly, with Pin 8 programmed for DPL/PL CS Detect and Active Low. I am using this cable from Ebay http://cgi.ebay.com/Delay-Repeater-Interface-for-Motorola-GM300-Radio-NEW_W0QQitemZ150095175361QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item22f25e9ec1 and I'm wondering if it's not correct? This outfit also sells a "duplex cable", but I thought that only allowed the repeater to work in both directions, not necessarily achieve what you talk about below. I'm not trying to operate crossband - just a simple GMRS repeater. Thanks for any possible advice!
Phil - AD6NH/WQKP927 --- In Repeater-Builder@yahoogroups.com, "Milt" <men...@...> wrote: > > Dan, > > From your message I am guessing that you are trying to set up a crossband > repeater from VHF to UHF. Otherwise you will need to explain 2 mobiles and > a "simplex repeater". > > The rear 16 pin connectors have some pins that are fixed in function (mic > audio, PTT, Gnd) and some that are assigned via software (type of audio > output, indication of valid PL/DPL/carrier detection). The switching > functions must be configured to be active atthe proper level (High or Low). > Both radios will need to be properly configured. > > The configuration of the cable must be bi-directional; it must pass the COS, > PTT, and audio signals in both directions, GND is comman between both units. > > Without the proper equipment and software to program the radios and > documentation of the radio and the cable it's going to be rather hard to get > things properly set up. > > Milt > N3LTQ > > > > > > ----- Original Message ----- > From: "dan d" <dwd71...@...> > To: <Repeater-Builder@yahoogroups.com> > Sent: Tuesday, January 06, 2009 9:30 AM > Subject: [Repeater-Builder] motorola repeater cable problem > > > >I have two Motorola sm50 mobiles using a repeater cable that goes > > between the two at the option plug in the back. I have tried every > > configuration two get this to work with no results. Before I condem > > the cable I got off ebay does anyone know of any mods or settings that > > need to be done to get this simplex repeater up and running. I have > > confirmed the radio operation itself and they are good to go. > > > > > > ------------------------------------ > > > > > > > > Yahoo! Groups Links > > > > > > >
