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
104
narda west
AMPS BAND FILTERS / DUPLEXERS
For More Information Call:
(916) 351-4500
AMPS B Band Duplexer
•Passes AMPS B Band Rx / Tx
•High Isolation
•Low Insertion Loss
•Standard EIA Rack Mountable
•Excellent Temperature Stability
DESCRIPTION
Narda West’s AMPS B Band Duplexer provides highly
selective receive / transmit combining. This duplexer is
designed to pass the AMPS B receive bands of 835 to
849 and the transmit band of 880 - 894 MHz while
providing more than 75 dB isolation. The unit has a 1.0
dB maximum passband insertion loss with 0.7 dB typical.
Specifically designed for high power applications, this
duplexer has power ratings are 400 watts CW, 600 watts
peak, with multi-carrier powers of 8 carriers at 10 watts
each. It is provided with Type ‘N’ female connectors.
SPECIFICATIONS
MODEL NUMBER AFD-21A-8389-01
PASSBAND
RECEIVE
TRANSMIT
835 - 849 MHz
880 - 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 - 800 MHz
TRANSMIT TO ANTENNA 915 - 1500 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
400 W
600 W
8@10W
MONITOR PORT 50 ±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 106.4mm 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.
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