supply of walkie talkie and other items purches in s.p. office gadchiroli specification show in tender form walkie talkie and other items purches in s.p. office gadchiroli specification show in tender form , description of work/item , digital dmr hand held radio vhf walkie talkie frequency 136 to 174 mhz, 2 slots compatible with pseudo trunk operation, 1064 channels, spacing 12.5khz, 7.2v ± 10% with li-ion/li-poly rechargeable battery of capacity 2400 mah, display 2.4 inch with 10 rows display, inbuilt capability bluetooth, 0.5 ppm or better, 50o helical antenna, 5 watts power output, 11kof3e, 4fsk,ambe +2 0.30?v (12db sinad ) or better. simple press to talk, low battery alert & announcement on checking battery level continuous tone coded squelch system (ctcss), mixed mode operation (analog and digital) capability for multi channel & multi site roaming facility in ip network, any one of 2-tone/5-tone/ dtmf / mdc signalling. busy channel lockout. selective call decode. capable of vox hand free operation. channel scanning with call quieting facility. lone worker & mandown feature, should have built-in gps feature, gps instant messaging and query location to know other radio location with distance, text and predefined message, channel & feature announcement for ease of operation, automatic number identification (ani). , li-ion-battery (2000 mah) for handheld radio specifications: li-ion-battery 2000 mah for handheld radio as above with nominal voltage 7.4 volt, operating time 10 hours for digital 8 hours for analog, life cycle >300 weight less than 125 gms and operating temperature zero to 40 degree c during charge and -20 to +60 degree during discharge. , li-ion-battery (3000 mah) for handheld radio technical data- compatible radios – as above, battery type- li-ion-battery, nominal capacity-3000 mah, nominal voltage-7.4 v, operating time (5/5/90)-v->18 h digital, life cycle-> 400, size-106.4 x 56.3 x 18.4 mm, weight- about 150 g, operating temperature-0 ~ 40 °c (charge), -20 ~ 60 °c (discharge) , li-ion battery charger cum ac power adapter for 2000 mah & 3000 mah batteries as above : items required : li-ion battery charger, power adapter & ac power cord. specifications: input voltage/current : dc12v/7a & output voltage/current : dc 4.2v to 5v / 1.4a operating temperature : zero to +45 degree c & storage temperature : -20 to +70 degree c power adapter : input 100 to 220v ac 1.5a & dc voltage : 12v 7a led indicator should be show the following indicator. power indictor : status off : the power adopter does not work properly & glows red : the power adopter works properly charge indicator : glows red :charging, flashes red slowly : standby (no load), flashes red rapidly: the charger does not work properly, or the battery fails to be charged, glows green : fully charged. features : protection against short circuit, protection against output over-current, protection against overcharging, protection against over-temperature. , helical antenna specifications : zero db dual band helical antenna with frequency range of 136 to 174 mhz with gps inbuilt antenna. the helical antenna should be flexible with omni directional. it should have sma female connector and have correctly fitting with above walkie talkie