EFJohnson Radio FM Portable Radio Intrinsically-Safe SMARTNET, SmartZone Conventional User Manual

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MISCELLANEOUS
52
Gurgle-Like Tone
Dynamic regrouping has occurred (page 48).
Dynamic regrouping has occurred but the regrouping channel is not 
selected (page 48).
Four Low Tones (Busy Signal)
The radio system is busy or a busy condition exists when making a
telephone call.
Four Alternating High and Low Tones
A channel is available after a busy condition occurred (SMARTNET/
SmartZone only).
Rechargeable Battery Pack
WARNING
Do not dispose of the battery pack in fire because it may explode. The 
nickel metal-hydride (NiMH) battery pack used by this radio must be 
disposed of in accordance with local regulations. Do not short the termi-
nals because the battery may become very hot.
Battery Life
With proper care, the nickel metal-hydride (NiMH) battery pack 
used by this radio should provide excellent service. When the pack no 
longer holds a charge or provides only a very short operating time, it must 
be replaced with a new unit.
Typical operating time before recharging is required is approxi-
mately 7.5 hours. This assumes that the transceiver is transmitting at high 
power 5% of the time, receiving and producing audio 5% of the time, and 
in the standby mode (receive with audio muted) 90% of the time. If the 
low-power mode is selected or different times are spent in these modes,