tender for vhf digital walkie-talkie transceiver in frequency range 146-174mhz with channel spacing of12.5khz, battery ni-mh/li-ion of rating minimum 2300mah.helical spring antenna . power output 5 watt as perrdso spec. rdso/spn/tc/107/2018 rev.0.0 inspection by rites. the necessary bq and railway specenclosed. accepted makes kenwood, motorola and alinco only.