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
98
narda west
AMPS BAND FILTERS / DUPLEXERS
For More Information Call:
(916) 351-4500
SPECIFICATIONS
MODEL NUMBER AFD-21A-8289-22A
PASSBAND
RECEIVE
TRANSMIT
824 - 849 MHz
869 - 894 MHz
PASSBAND INSERTION LOSS
RECEIVE
TRANSMIT
1.0 dB MAX
1.3 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
500 W
3200 W
8@50W
MONITOR PORT 40 ±5 dB
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 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, 3200 watts peak, with
multi-carrier powers of 8 carriers at 50 watts each. A
monitor port is standard on the AFD-21A-8289-22A. This
port offers a -40 dB coupled signal for power monitoring.
The unit is provided with Type ‘N’ female connectors.
7/16 DIN connectors are also available.
AMPS High Isolation Duplexer
•Passes Full Amps Receiver / Transmit Bands
•High Isolation
•Low Insertion Loss
•Standard EIA Rack Mountable
•Excellent Temperature Stability
TOC
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