VCom Inc.
BST1918 Manual; ml_bst1918_02 (Sept 2005)
Approved: C.H.
7
1.3 Specifications
BST1918 BASE STATION TRANSCEIVER SPECIFICATIONS
TRANSMIT
IF Input Frequency
555.0 -570.0MHz (2MHz channels)
555.2 - 569.8MHz (6MHz channels)
Bandwidth
Channel size: typical 6MHz, adjustable through WM404x
IF Input Level
+10 dBm nominal (total power)
IF Detector Accuracy
±1.0 dB typical
RF Output Frequency Range
Block B: 1950.0 – 1965.0MHz, (2MHz channels)
1950.2 – 1964.8MHz, (6MHz channels)
Block C: 1975.0 – 1990.0MHz,
(2MHz channels)
1975.2 – 1989.8MHz, (6MHz channels)
Frequency Response (any 6 MHz band)
1.0 dB peak-peak
Rated Output Power at Antenna Port
+31 dBm (QPSK, 16QAM, 64QAM)
Output Power Stability
±1.0 dB over frequency and temperature
Output Power Control Range
20.0 to 32.0 dBm
Output Power Control Modes
Closed-loop on specified output power or open-loop on
specified gain (compensated for IDU cable loss
and temperature variations)
Spectral Mask
Compliant with FCC CFR 47 Part 24
Phase Noise
<-51 dBc double sideband integrated over 10 kHz to 2.5 MHz
MER (equalized)
ኑ
38 dB
IF Cable Compensation Range
15 dB
Spectral inversion
No spectral inversion
RECEIVE
RF Input Frequency Range
1870-1885 MHz, Block B
1895-1910 MHz, Block C
Frequency Response (any 3 MHz band)
0.6 dB peak-peak
IF Output Frequency Range
27-42 MHz
Noise Figure at Antenna Port
<4 dB including duplexer loss at maximum gain
Integrated Gain
55 dB nominal
Gain Control Range
±10 dB
Output Third Order Intercept Point:
+20 dBm at maximum gain
Phase Noise
<-95 dBc/Hz @ 10 kHz
<-51 dBc double sideband integrated over 10 kHz to 2.5 MHz
IF Detector Accuracy
±1.0 dB typical
Spectral inversion
No spectral inversion
Image Rejection
> 75 dB
GENERAL
Remote Control Interface
Bi-directional signalling with WM4040
Connectors
N female, 50 ohms
Power Requirement
-40.5 to –57VDC operational
Power Consumption
60W maximum
Operating Temperature Range
10°C to 40°C
Mounting
Standard 19” (48.3 cm), 2U (3.5”) rack space (3U in dual
configuration)
Dimensions
19” (w) x 14.9” (d) x 3.5” (h) (48.3 x 37.9 x 8.9 cm)
Weight
30.8 lbs. (14kg)
Specifications subject to change without notice.
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