Real emergency com systems need grid independent power source.
Bare Bones Emergency Communications GMRS Repeater.
Baofeng or similar with =>50 channel, min. 3.5 watts output - $30
SR-112 simplex repeater Controller $60
Three or four receptacle power strip - $5
A small 100 to150 watt 12 VDC. To 117 AC inverter - $16
A ½” or ¾” wood mount board, 9 1/2” x 9 1/2” -
Mount components with industrial Velcro –
Outside antenna mount, cable $100
Power Source (Grid independent.)
A 50 watt or greater 12VDC Solar Panel $75 - $110
A 10 Amp, 12 DC charge controller - $15
Storage battery(s), 12 DC , fresh car, marine, solar sealed
Really heavy use – double panel capacity, add battery
Almost any solar panel, 50 watts or greater and almost any 12DC battery will power this GMRS radio repeater communications set independent of power grid.
An elevated location, several floors up, will provide several miles of reliable simplex radio communications utilizing almost any (99%) GMRS / FRS handheld two-way radios. Several additional floors up, many more miles of communications for larger community or subdivision.