Tom, if you already have a digital control tray in your possesion it is not all that difficult to make it work on the analog. It is not plug and play, however. If you do not have a digital control tray already, and you are just needing a stand alone repeater, throw it up on a hill, and pretty much forget about it, it's not worth doing it. Just have someone program your codeplug, and forget about it. Now, if you are a tinkerer, like me, the computer programable CXB station is the only way to go.
If you are bent on doing the change, the difference between the analog and digital stations is where they source a regulated 5 volts for the reciever and control circuits. The analog station takes the 5 volts from the SSCB board and sends it down to the interconnect board that plugs into the bottom of the RF tray casting via J801, pin# 9. On the digital station, the interconnect board that plugs into the bottom of the RF tray casting has it's own 5 volt supply for the above mentioned circuits. On the digital stations, J801, pin# 9 is for the RX2 strobe signal. If you just change out the SSCB boards, the station will not function. Assuming that you will never put a second receiver in the station (not needing Rx 2 strobe), you can break the trace at J801, pin# 9 on the digital SSCB board, and solder a jumper from J801, pin# 9 to test point 6 (reg. 5 volt test point on the digital board). This will source the 5 volts to the RF tray that the analog station needs. Program it up, and away you go. I've done this, and it works great. I used a control tray from an 800 Mhz. digital station, and by following the parameter changes in the RSS, made it functional on UHF. If you, by chance, are going to use a second receiver (voting, etc.) in the station, then you will need acquire the interconnect board from a digital station that plugs into the bottom of the RF tray casting(part #TRN7141A), and not do the trace mod on the SSCB board. Just change the two boards, and it's plug and play. If you are going to tackle any of this, it is a good idea to have the manuals from both the analog and digital stations. It will make more sense of what you are doing, if you follow the schematics. I have to throw in that you do this mod at your own risk. Good luck, Gary KB7TRP --- In [email protected], "radiocop83" <[EMAIL PROTECTED]> wrote: > > hi > i recently bought a 100 watt uhf msf5000 rptr,analog and would > like to know if all i would need to convert it to digital;laptop > programable is a digital uhf controler board and what else is > needed to be done. > and if anyone has one for sale > ihave a clb series > > thanks > tom > 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/
