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AE04B-A0279 Rev --
1.1
OVERVIEW
The SelectAmp CDMA 800 bi-directional channelized amplifier provides selective frequency amplification of
user specified frequencies in the SMR, Cellular, and ESMR bands. This unit will selectively filter for one 1.25
MHz or 5 MHz channel, depending on the part number ordered, in the Uplink and Downlink band as
determined by the operator. Frequency selection, gain adjustment and fault monitoring is accomplished with
monitor and control circuitry and firmware.
Within this manual, Uplink refers to the RF signal path from the mobile unit to the base station (Donor Cell)
and the Downlink refers to the RF signal path from the base station to the mobile unit.
1.2
ELECTRICAL SPECIFICATIONS
Table 1-1 below contains the electrical specifications for the Channel Selective Amplifier.
Parameters
Frequency Range
800 MHz Cellular
Power
SAW Filter 3 dB Bandwidth
Noise Figure
RF Port Impedance
Maximum Input Signal Without damage
CDMA Power Output
Spurious Emissions per J-STD-008
In-Band Spurious
Status
Power Gain
Downlink
Uplink
CHAPTER 1
DESCRIPTION
Table 1-1 Electrical Specifications
Document use is restricted to that described on cover
Specification
Uplink
824 – 849 MHz
Three wire, 90 to 260 VAC @ 200 watts.
1.5 MHz or 5 MHz.
5 dB maximum.
50 ohms nominal.
+10 dBm with no attenuation.
8 Watts Downlink, 1Watt Uplink.
(Measured from filter center frequency).
-45 dBc min @ 885 KHz.
-13 dBm max @ 1.25 MHz.
-45 dBm min @ 1.25 MHz.
-30 dBm or better at maximum gain.
Frequency setting, gain setting, and module failure via
phone interface.
65 to 95 dB, adjustable in 2 dB steps.
55 to 85 dB, adjustable in 2 dB steps.
DESCRIPTION
Downlink
869-894 MHz
1-1
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