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"Phonebooth" kit

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"Phonebooth" kit

Basic "phonebooth" kit with the phone (GXP-1630) going to the Mikrotik SXTsq 5. Front right corner has two RJ45 panel mounts. 12V/5V step-down for the phone. 10Ah Dakota Lithium battery. Apache 2800 case.


Looks great!

What a fun project, Martin.  Looks great!

km6zpo's picture
HUGE battery!

You could run that phone and AP for weeks off that 10aH battery!  

K6CCC's picture
Weeks? Not hardly!

Not hardly!  That's 10AH x 12 volts which is only 120 watt hours.  The SXTsq 5 is speced at 7 watts max (likely does not take that much).  At half that, it would only last a little over a day, and that does not include the phone (which I could not quickly find a spec for), or conversion losses.


I haven't tested yet how long it would run. Much will depend on the use profile, standby vs. in-use. 
The wallwart for the phone is 5V/0.6A. The stepdown converter claims over 95% max. conversion efficiency.

km6zpo's picture
7 watts? Wow!

You are correct Jim!  Can't believe that thing sucks down 7 watts but I checked... correct.  That's a power sucker!

In that case, perhaps it would be a good idea to have a solar panel - something around 25 watts @ 12VDC to keep the battery topped off.  

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