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MTR3000 Repeater Battery Backup

blhar15

Newbie
Premium Subscriber
Joined
Dec 12, 2014
Messages
75
Location
Waterloo, IA
I am looking to setup a battery backup for our MTR3000 repeater. I was looking at a solar option for charging the batteries. It looks like the power supply in the repeater will auto sense an A/C outage and flip to the D/C input. Does anyone have experience with this, suggestions, etc.?

Thanks
 

kf8yk

Member
Joined
May 3, 2003
Messages
750
One issue is the MTR's are not very efficient. The MTR3000 on DC draws 22 watts while idle, for comparison a Codan MT-4E draws less than 4 watts idle.

Any reason why your considering solar if AC is available?
 

kayn1n32008

ØÆSØ Say it, say 'ENCRYPTION'
Joined
Sep 20, 2008
Messages
6,770
Location
Sector 001
I have AC available, but just looking at options if power is down for more than a few days.
The MTR3000 isn't exactly the machine to be relying on with battery back up.

Battery backup is for hours of loss of AC, not days. Fors days with out grid power, you need a generator, not solar and batteries.
 

mmckenna

I ♥ Ø
Joined
Jul 27, 2005
Messages
24,774
Location
NMO's installed, while-u-wait.
are you aware of a DMR repeater that would be better on longer battery power?

I'm getting ready to deploy some new Kenwood NXR-1800's. I'm running them in analog only, but they'll do DMR.
Standby current is spec'd at under 10 watts. They've got some settings that shut down the display and only run the cooling fan based on temperature, that tends to help.

I'm installing 3 of them at a very remote sites that are 100% solar powered. No utility power, no generators. But I'm only running them at 10 watts. They'll do 50 watts at full power.
 
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