74 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
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AMPS HIGH ISOLATION
DUPLEXER
·Passes Full Amps Receive / Transmit Bands
·High Isolation
·Low Insertion Loss
·Standard EIA Rack Mountable
·Excellent Temperature Stability
SPECIFICATIONS
MODEL NUMBER AFD-21A-8289-22
PASSBAND
RECEIVE
TRANSMIT
824 - 849 MHz
869 - 894 MHz
PASSBAND INSERTION LOSS
RECEIVE
TRANSMIT
1.0 dB MAX
0.7 dB MAX
PASSBAND LOSS VARIATION 0.5 dB MAX
PASSBAND RETURN LOSS 14 dB MIN
ISOLATION
RECEIVE TO TRANSMIT
TRANSMIT TO RECEIVE
75 dB MIN
120 dB MIN
POWER HANDLING1
CW
PEAK
MULTI CARRIER2
400 W
600 W
8@10W
MONITOR PORT 40 ±5 dB
OPERATING TEMP 0 TO +65°C
STORAGE TEMP -55 TO +125°C
CONNECTORS TYPE ‘N’ FEMALE
SIZE 19” x 4.19” x 2U
482.6 mm x 106.4 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 Full Amps High Isolation Duplexer provides
highly selective receive / transmit combining. This
duplexer is designed to pass the full AMPS receive and
transmit bands while providing more than 120 dB
transmit isolation. This unit has a 1.3 dB maximum
passband insertion loss with 1.0 dB typical. It has been
specifically designed for high power applications.
Power ratings are 500 watts CW, 1.9 kW peak, with
multi-carrier powers of 8 carriers at 10 watts each. A
monitor port is standard on the AFD-21A-8289-22. This
port offers a -40 dB coupled signal for power monitoring.
The unit is provided with Type ‘N’ female connectors.
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75
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]
4.19
[106,4]
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
[76,2] 3.48
[88,4]
2X .24 [6,1]
1
23
3_
4_
2_
3_
4_
2_
CH1 S21 log MAG 1 dB/ REF 0 dB
CH1 MEM log MAG 1 dB/ REF 0 dB 1_ :-.4869 dB
824.000 000 MHz
:-.8032 dB
869 MHz
:-.7821 dB
894 MHz
:-.6530 dB
:-90.022 dB
869 MHz
:-107.01 dB
894 MHz
4849 MHz
:-109.27 dB
849 MHz
1_ :-106.95 dB
PRm
Cor
Avg
100
START 810.000 000 MHz STOP 910.000 000 MHz
PRm
Cor
Avg
100
CH1 S21 log MAG 1 dB/ REF 0 dB
CH1 MEM log MAG 1 dB/ REF 0 dB
S
1234
12
3
4
1_ :-.4869 dB
824.000 000 MHz
3_ :-.8032 dB
869 MHz
4_ :-.7821 dB
894 MHz
2_ :-.6530 dB
3_ :-90.022 dB
869 MHz
4_ :-107.01 dB
894 MHz
849 MHz
2_ :-109.27 dB
849 MHz
1_ :-106.95 dB
PRm
Cor
Avg
100
START 810.000 000 MHz STOP 910.000 000 MHz
PRm
Cor
Avg
100
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