70 USA TEL: (1) 631 231-1700 • INT’L TEL: (1) 631 231-1390 • FAX (1) 631 231-1711
E-MAIL: nardaeast@L-3COM.com • www.nardamicrowave.com
RF Radiation
Safety Products
Power
Meters/Monitors
Wireless
Products
Electromechanical
RF Switches
Passive
Components
Active
Components
Stock Duplexers
AMPS CDPD Duplexer
·Passes Full AMPS Receive / Transmit Bands
·High Isolation
·Low Insertion Loss
·Standard EIA Rack Mountable
·Excellent Temperature Stability
SPECIFICATIONS
MODEL NUMBER AFD-21A-8289-01
PASSBAND
RECEIVE
TRANSMIT
824 - 849 MHz
869 - 894 MHz
PASSBAND INSERTION LOSS 1.0 dB MAX
PASSBAND LOSS VARIATION 0.4 dB MAX
PASSBAND RETURN LOSS 14 dB MIN
REJECTION
ANTENNA TO RECEIVE DC - 768 MHz
TRANSMIT TO ANTENNA 902 - 2050 MHz
65 dB MIN
65 dB MIN
ISOLATION
RECEIVE TO TRANSMIT
TRANSMIT TO RECEIVE
75 dB MIN
75 dB MIN
POWER HANDLING1
CW
PEAK
MULTI CARRIER2
500 W
750 W
8@10W
MONITOR PORT contact factory
OPERATING TEMP 0 TO +65°C
STORAGE TEMP -55 TO +125°C
CONNECTORS TYPE ‘N’ FEMALE
SIZE 19” x 2.49” x 2U
482.6 mm x 63.2 mm x 2U
NOTES:
1Power handling (max watts) includes
simultaneous conditions of antenna VSWR
£2:1, altitude £10,000 feet, and case
temperature of £+50°C.
2MULTIPLE CARRIER is defined as the
number of carriers, neach at SEPARATE
frequencies within the transmit passband
applied simultaneously at the power level,
pas indicated, completing the formula:
n2x p = Peak Power Handling.
DESCRIPTION
Narda’s AMPS CDPD Duplexer provides highly selective
receive / transmit combining. It is designed to pass the full
AMPS receive and transmit bands while providing more
than 75 dB isolation. This duplexer has a 1.0 dB
maximum passband insertion loss with 0.7 dB typical.
This unit has been specifically designed for high power
applications. Power ratings are 500 watts CW, 750 watts
peak, with multi-carrier powers of 8 carriers at 10 watts
each. An optional monitor port is available which offers a
-50 dB coupled signal for power monitoring. This unit is
provided with Type ‘N’ female connectors.
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USA TEL: (1) 631 231-1700 • INT’L TEL: (1) 631 231-1390 • FAX (1) 631 231-1711
E-MAIL: nardaeast@L-3COM.com • www.nardamicrowave.com
RF Radiation
Safety Products
Power
Meters/Monitors
Wireless
Products
Electromechanical
RF Switches
Passive
Components
Active
Components
Stock Duplexers
TYPICAL MEASURED DATA
OUTLINE DRAWING
MARKING AREA
.19 [4,8]
2.49
[63,2]
3X .74 [18.8]
2X .34 [8,6]
2.29 [58,2] 2X 18.33 [465,6]
4X .28
[7,1] WIDE
SLOT THRU RX
4X .40 [10,2]
4X .20 [5,1]
TX
3X CONNECTOR,
TYPE N, FEMALE
19.00 [482,6]
TUNING AREA
.68 [17,3]
MON
ANT
OPTIONAL
MONITOR PORT
CONNECTOR,
BNC, FEMALE
2X 3.00
[72,2] 3.48
[88,4]
2X .24 [6,1]
CH1 MEM log MAG 1 dB/ REF 0 dB
START 790.000 000 MHz STOP 940.000 000 MHz
Cor
PRm
CH2 MEM log MAG REF 0 dB
1 dB/
Cor
PRm
12
34
1_:-96.017 dB
824.000 000 MHz
2_:-90.319 dB
849 MHz
3_:-.5209 dB
869 MHz
4_:-.3975 dB
894 MHz
1
2
34
1_ -.4897 dB
2_ -.578 dB
849 MHz
3_ -92.192 dB
869 MHz
4_ -95.285 dB
894 MHz
CH1 MEM log MAG 10 dB/ REF 0 dB
COR
PRm
CH2 S21 log MAG REF 0 dB
10 dB/
START 790.000 000 MHz STOP 940.000 000 MHz
COR
PRm
12
34
1_ -96.017 dB
2_ -90.319 dB
849 MHz
3_ -.5209 dB
869 MHz
4_ -.3975 dB
894 MHz
1
2
34
1_:-.4889 dB
824.000 000 MHz
2_:-.5776 dB
849 MHz
3_:-92.564 dB
869 MHz
4_:-92.778 dB
894 MHz
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