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
110
narda west
GSM BAND FILTERS / DUPLEXERS
For More Information Call:
(916) 351-4500
EGSM Band Duplexer
•Passes Extended GSM Rx / Tx Bands
•High Isolation
•Low Insertion Loss
•Standard EIA Rack Mount
•Excellent Temperature Stability
DESCRIPTION
Narda West’s EGSM Band Duplexer provides highly
selective receive / transmit combining. This duplexer is
designed to pass the extended GSM receive and transmit
bands while providing more than 60 dB isolation. It has a
1.5 dB maximum passband insertion loss with 1.0 dB
typical. Specifically designed for high power applications,
this duplexer has power ratings of 400 watts CW, 600 watts
peak with multi-carrier powers of 8 carriers at 10 watts
each, and is provided with Type ‘N’ female connectors.
SPECIFICATIONS
MODEL NUMBER GFD-21A-8896-01
PASSBAND
RECEIVE
TRANSMIT
880 - 915 MHz
925 - 960 MHz
PASSBAND INSERTION LOSS 1.5 dB MAX
PASSBAND LOSS VARIATION 1.0 dB MAX
PASSBAND RETURN LOSS 14 dB MIN
REJECTION
ANTENNA TO RECEIVE DC - 840 MHz
TRANSMIT TO ANTENNA 1010 - 2700 MHz
65 dB MIN
65 dB MIN
ISOLATION
RECEIVE TO TRANSMIT
TRANSMIT TO RECEIVE
65 dB MIN
65 dB MIN
POWER HANDLING1
CW
PEAK
MULTI CARRIER2
400 W
600 W
8@10W
MONITOR PORT CONTACT FACTORY
OPERATING TEMP 0 TO +65°C
STORAGE TEMP -20 TO +85°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.
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