WISCO International (CELWAVE TB-280 Series)

TB*280 Series RFS hybrid-ferrite transmitter combiners are designed to couple multiple close spaced transmitters into one antenna. They are expandable, highly compact and accommodate close channel spacing with very high isolation.
The TBC and TCC are capable of coupling two or four transmitters of up to 125 Watts power rating and are equipped with 60 and 150 Watt loads respectively. Both use CC Series isolators to provide 50 dB minimum isolation. The TBD and TCD Series use CD Series dual isolators to provide 80 dB minimum isolation when the output hybrid is properly tuned to the antenna.
A pair of two channel models may be field expanded to four channels by means of a PBH or PCH hybrid coupler panel and CAB-1 cable assembly. The THC and THD high power units are available in either two or four channel configuration for 350 Watt transmitters. They provide 50 dB and 80 dB minimum isolation respectively.

Features/Benefits

� Allows combining of multiple close spaced transmitters
Maximizes use of tower space, reduces costs.

� No minimum channel separation
Can be used to combine two transmitters on same frequency.

� High isolation
Minimizes the possibility of intermodulation.

� Modular
Simplifies on-site expansion.

Product Type	Hybrid-Ferrite
Frequency Band	174 MHz - 380 MHz
Application	Paging
Number of Channels	2
Input Power/Channel Range, Watts	60 to 150
Minimum Channel Spacing, kHz	25
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	8
Isolation, Min. Tx-Tx, dB	80
Isolation, Min. Ant.-Tx., dB	53
Insertion Loss, Max. per Channel, dB	4.3
Channel Separation for Specifications Given, kHz	25
Continuous Power Input, Max. per Channel, Watts	125
Input Return Loss, Min., dB	19.0
Output 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)	89 (3-1/2 )
Width, mm (in)	483 (19)
Depth, mm (in)	356 (14)
Mounts in 19" (483mm) EIA Rack (Yes/No)	Yes
Weight, kg (lb)	5.16 (11.38)