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
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narda west
ETACS BAND FILTERS / DUPLEXERS
For More Information Call:
(916) 351-4500
ETACS Band Duplexer
•Passes Extended TACS Rx / Tx Bands
•High Isolation
•Low Insertion Loss
•Standard EIA Rack Mount
•Excellent Temperature Stability
DESCRIPTION
Narda West’s Extended TACS Band Duplexer provides
highly selective receive / transmit combining. This
duplexer is designed to pass the ETACS receive and
transmit bands while providing more than 60 dB isolation.
The units have a 1.0 dB maximum passband insertion
loss with 0.7 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
10 carriers at 8 watts each and comes with Type ‘N’
female connectors.
SPECIFICATIONS
MODEL NUMBER EFD-21A-8795-04
PASSBAND
RECEIVE
TRANSMIT
872 - 905 MHz
917 - 950 MHz
PASSBAND INSERTION LOSS 1.0 dB MAX
PASSBAND LOSS VARIATION 0.5 dB MAX
PASSBAND RETURN LOSS 14 dB MIN
REJECTION
ANTENNA TO RECEIVE DC - 830 MHz
TRANSMIT TO ANTENNA 970 - 1500 MHz
65 dB MIN
65 dB MIN
ISOLATION
RECEIVE TO TRANSMIT
TRANSMIT TO RECEIVE
60 dB MIN
60 dB MIN
POWER HANDLING1
CW
PEAK
MULTI CARRIER2
400 W
600 W
10@8W
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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