The method I have prefered over the years is the Motorola Micor repeater TPN1105A/TPN1106A Power Supples that also charge the battery.
The radio site near here uses that power supply to run both repeaters and charge the battery as well. Just my opinion. I have the one power supply that is in service and three more for spare parts. A number of years ago, had one site with three 100 watt Micor repeaters ... each repeater had one of the power supplies. The output of the three power supplies were paralleled and charged two Size 8D 'cat batteries.' One day I went to the site on a maintenance schedule and found one side of the radio systems primary power circuit breaker had failed. That caused one of the above power supplies to power all three 100 watt repeaters - for how long? I didn't know. Seems two of the repeaters were plugged into the failed side of the power line / the remaining repeater was on the other side of the power line. BTW, two of the repeaters were public safety / the power supply that was supplying all the power was on the amateur radio repeater. Neil - WA6KLA "Tony King, W4ZT" wrote: > > One of the best ways to manage the charging of your batteries is > to use a multi-mode charger designed to properly charge and > maintain them. Ibex <http://www.ibexmfg.com> carries two 3 mode > chargers that are very well suited for the job. If you look at > their web page under the 12 volt chargers, the last one listed > also has load shedding capability. That means that not only does > it charge the batteries, but you can power the receiver, controller > and exciter (but not the PA) through the load shedding switch and > when the battery voltage drops, it will shut everything down; > saving your batteries from total depletion. > > Using a charger like this you will still need to isolate the output > of the AC power supply and the batteries. I personally prefer to > do this with hard relay contacts so that you don't have voltage > drop through a diode to contend with. Which ever way you choose, > spend a little extra to charge the batteries correctly and they will > last a very long time and be there when you need them. > > 73, Tony W4ZT > > w9mwq wrote: > > > > Last night my power supply took a dump! Good thing for backups. > > Anyways, what I am wanting to do is put 3 marine batteries together > > to run the power for the repeater with a charger to charge the > > batteries. If I use a 12 Volt Car charger, do I risk the chance of > > noise, or would the batteries filter that. What would be a good > > source to charge these batteries? The power supply that will be > > taking the place of the worthless Pyramid supply will be an Astron > > 52 Amp Rack Mount Supply. I have heard in the past that batteries > > have been charged with these power supplies, but not sure if this > > if true or not. Any ideas? Thanks. > > > > Mathew > 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/
