1.8 Power Efficiency Package
The Power Efficiency Package hardware includes a modified transceiver, power amplifier, power supply, fan, and
optional transceiver option card (internal reference) along with additional software configurations through CSS.
The following conditions must be met to obtain a power consumption of less than or equal to 35 W:
• DC source only
• Speaker turned OFF (if equipped with a transceiver option card)
• No activation of Aux Out Relays (if equipped with a transceiver option card)
• No 29 V AUX loads. For example: active draws by a site controller
• CSS configured for applications not requiring receiver diversity
• CSS Fan Holdover configured to “short” (length of time the base radio fan stays ON after transmission)
• Ambient temperature of 104 °F (40 °C) or less (single fan operation – disabling one of the fans within the fan
module. See
9.3 Replacing the Fan Assembly, page 9-10
in the FRU Procedures chapter for instructions on
how to disable the fan.)
To validate the 35 W standby power consumption specification, wait for the main fans to turn
off after the transmitter dekeys. The turn off delay of the main fans is controlled by the fan
holdover configuration in the CSS. Single fan operation requires the Tx Power Out in the CSS to
be limited to 50 W.
• Transceiver, power amplifier, power supply, fan, and TCXO transceiver option card (internal reference) are
all power efficiency package versions
The TCXO transceiver option card is available only for non-simulcast conventional systems. The OCXO
transceiver option card is available for trunked or simulcast systems, but does not guarantee 35 W.
Table 1-2
Standby Power Consumption
Conventional
Non-
Simulcast
Conventional
Simulcast
Trunked Non-
Simulcast
Trunked
Simulcast
Internal Reference
Capable
35 W
45 W
35 W
45 W
Not Internal Reference
Capable
35 W
35 W
35 W
35 W
6871022P86-A - November 2012
1-11
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