If you look at the RIB schematic (see the RSS page here) you will see that it's tip positive and that all three sources are wired together through diodes - the power jack, the 9v battery and the external power pin (from the radio cable - a lot of mobiles like the Spectra have switched +12 on the programming connector just to power the RIB while it is programming the radio).
As such ANYTHING from 9 to 12v as long as it is well filtered DC will work. I use a 12v 750ma on mine just because I had it... Even though there is 10uf across the DC power input I added a series choke and a 50uf to ground on the wall-wart port of mine. As I said, it's pretty obvious from the schematic. At 11:02 AM 11/30/06, you wrote: >Can anyone Please tell Me What the Rating and the Polarity of the >Center pin is on the Motorola RIB RLN4008B , Tired of worrying if >the 9 volt batter gets weak while reading the radio . > >Happy Holidays > >Don KA9QJG > >PS I will not tell Big M who gave me the Info Ha Ha > > > > > > > >Yahoo! Groups Links > > >
