WISCO International

RFS

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TLD280-4T
Coaxial Cavity-Ferrite Transmitter Combiners

Each of these RFS cavity-ferrite combiners utilizes a precisely tuned copper cavity junction with our single, dual or triple isolator. They are designed to couple several transmitters into one antenna. The TL Series is used to couple multiple transmitters with a minimum frequency spacing of 125 kHz to one antenna with the lowest possible loss per channel. Higher power units are available. Consult Radio Frequency Systems for more information.

Features/Benefits

Allows combining of two or more transmitters
Maximizes use of tower space, reduces costs.

High isolation
Minimizes intermodulation.

Modular
Simplifies on-site expandability.

Fully temperature compensated
Ensures consistent performance across temperature and power range.

Field Expansion
To combine multiple cavities requires additional modules and frequency dependent cable harness. Both new and old frequencies must be specified.

Specifications

Product Type Cavity-Ferrite
Frequency Band 174 MHz - 380 MHz
Application Paging
Number of Channels 4
Input Power/Channel Range, Watts 60 to 150
Minimum Channel Spacing, kHz 125
End-Mount (Yes/No) Yes
Tx-Tx Isolation, dB >50
Frequency Range, MHz 279-281
Reflected Power, Max. Allowable from Ant., Watts 60
Bandwidth, MHz 4
Isolation, Min. Tx-Tx, dB 60
Isolation, Min. Ant.-Tx., dB 50
Insertion Loss, Max. per Channel, dB 3.5
Channel Separation for Specifications Given, kHz 125
Continuous Power Input, Max. per Channel, Watts 125
Input Return Loss, Min., dB 19.0
Connectors - Input N-Female
Connectors - Output N-Female
Temperature Range, �C (�F) -30 to +60 (-22 to +140)
Height, mm (in) 622 (24-1/2)
Width, mm (in) 483 (19)
Depth, mm (in) 432 (17)
Mounts in 19" (483mm) EIA Rack (Yes/No) Yes
WISCO International, Inc. - MIAMI, FL U.S.A.
Fax: (954) 370-3997 | E-mail: wiscointl@wiscointl.com

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