E.F. Johnson Company 5100 ES, Operating Manual

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5-38 ES Series Models II/III Portable Radio Operating Manual
Conventional Mode Features
5.17.3 Sending GPS Data in Response to System Request
If so configured, the radio accepts P25 data requests for GPS data, and responds (over the
air) with the current GPS data.
5.18 Fire Ground Mode
Fire Ground Mode allows any radio optioned for Fire Ground Commander Mode to
operate in Fire Commander Mode, and any subscriber optioned for Fire Ground First
Responder mode to run in Fire Responder Mode. A radio can be programmed for both
modes; however, the radio can only operate in one of the modes at a time. The user must
exit the current mode to enter the opposite mode.
The intended set up is to have one radio running in Fire Commander Mode, and remain
outside the emergency site. The remaining radios operating at, and inside, the emergency
site should operate in Fire Responder Mode. The Fire Commander can issue Evacuation
Alerts to notify the First Responders they must evacuate. The Fire First Responders can
perform a Communication Check to determine their signal strength to ensure they are in
range of the Fire Commander.
Each radio can be programmed for up to four Fire Commander buttons (Fire Commander
1 through Fire Commander 4), and up to four Fire First Responder buttons (Fire
Responder 1 through Fire Responder 4). Each Fire Mode can be selectively programmed
for specific Fire Commander and Fire Responder options. Each Fire Mode can also be
programmed to operate on a designated channel or the current selected channel. If a
designated channel is chosen, the radio will automatically switch to the designated channel
when that Fire Mode is entered.
There are times when P25 digital voice is better than analog voice. Under these
circumstances it is best to operate in the P25 digital voice mode. If programmed, the radio
will change its transmit mode, based on signal strength, from analog to P25 Digital. If the
radio receives carrier with a RSSI below the Fair RSSI threshold, the radio will
automatically switch its transmit type from analog to P25 Digital. This will be evident as
the received audio should sound suddenly clear without background static as heard on an
analog channel.
Locked Radio Option - The user can choose to have different radio controls locked while
in Fire Mode and is set by programming. If this option is enabled, the radio will lock the
front and side buttons. Additionally, the radio can be programmed to lock the Channel
Selector, Volume Knob, Front Only Keypad, and Toggle switch. No matter the keypad
lockout options programmed, in Fire Mode the subscriber will always allow the buttons
for Emergency, Comm Check, Evac Alert, and the button programmed to initiate Fire
Mode, as it will be used to cancel Fire Mode. The radio will not power down while in Fire
Mode. Fire Mode must manually be exited for power down to occur.