107 WOODMERE ROAD FOLSOM, CA 95630
TEL: (1) 916 351-4500 FAX (1) 916 351-4550
E-MAIL: nardawest@L-3COM.com www.nardamicrowave.com
96
narda west
AMPS BAND FILTERS / DUPLEXERS
For More Information Call:
(916) 351-4500
AMPS High Power Duplexer
Passes Full AMPS Receive / Transmit Bands
High Isolation
Low Insertion Loss
Standard EIA Rack Mountable
Excellent Temperature Stability
SPECIFICATIONS
MODEL NUMBER AFD-21A-8289-15
/ -08 (MONITOR PORT)
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 911 - 1500 MHz
75 dB MIN
75 dB MIN
ISOLATION
RECEIVE TO TRANSMIT
TRANSMIT TO RECEIVE
75 dB MIN
75 dB MIN
POWER HANDLING1
CW
PEAK
MULTI CARRIER2
500 W
10 kW
20@25W
MONITOR PORT 50 ±5 dB
(-08 ONLY)
OPERATING TEMP 0 TO +65°C
STORAGE TEMP -20 TO +85°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 Band Duplexer provides highly
selective receive / transmit combining. This Duplexer is
designed to pass the full AMPS receive and transmit
bands while providing more than 75 dB isolation. It has a
1.0 dB maximum passband insertion loss with 0.7 dB
typical. This duplexer has been specifically designed for
high power applications. Power ratings are 500 watts
CW, 10 kW peak, with multi-carrier powers of 20 carriers
at 25 watts each. An optional monitor port is available
which offers a -50 dB coupled signal for power
monitoring. The unit is provided with Type ‘N’ female
connectors.
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107 WOODMERE ROAD FOLSOM, CA 95630
TEL: (1) 916 351-4500 FAX (1) 916 351-4550
E-MAIL: nardawest@L-3COM.com www.nardamicrowave.com
97
narda west
AMPS BAND FILTERS / DUPLEXERS
For More Information Call:
(916) 351-4500
TYPICAL MEASURED DATA
OUTLINE DRAWING
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