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Sinclair Technologies

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Cavity Ferrite Transmitter Combiners
"CT"   Series

This series of open-cabinet cavity-ferrite transmitter combiners is available in 2- to 8-channel configurations in both VHF and UHF frequencies. Each channel includes a dual, low-loss, Sinclair- manufactured isolator and a 10-inch, high Q bandpass cavity filter. A unique low-loss junction is provided to combine channels to one antenna. Double shielded cable is used throughout the combiner to ensure high isolation between channel. 
These transmitter combiners are housed in a painted steel 21 x 21 x 38 inch open-frame cabinet on castors for mobility. Two cabinets are required for 5 to 8 VHF channel units, and 7 or 8 UHF channel units. They may be stacked to conserve space. 
CT*-150F 
The CT*-150F series consists of two to eight cavities with companion isolators mounted in open frames for use in the 132-174 MHz frequency range. CT*-150F series combiners provide excellent performance with minimal insertion losses, as illustrated below for frequency separation of 60 kHz or more. By incorporating a hybrid to couple two 4-channel units, 8 channels with 30 kHz spacing can be combined with a typical insertion loss of 8 dB, a significant improvement over a conventional hybrid-ferrite combiner.

CT*-450F 
The CT*-450 series combines the mechanical features of open-frame construction with UHF cavities to provide a high performance transmitter combiner for the 406- 512 MHz frequency band. Typical insertion losses are illustrated below for the standard CT*-450F series (4- and 6- channel models). This series is also available using three-quarter wavelength cavities (specify CT*-453F) to permit spacing as close as 75 kHz.


SPECIFICATIONS

Electrical Specifications CT*-150F CT*-450F CT*-453F
Frequency Range

MHz

132-174

406-512

Frequency Separation

MHz

0.06 - 4.0

0.1 -12.0

0.075 -0.30

Number of Channels

2-8

Pass Band Insertion Loss

dB

See Curves

Isolation
            Tx to Tx
            Ant. to Tx

dB

70

60

Maximum Input VSWR

1.25:1

Maximum Ouput VSWR

1.5:1

Maximum Input Power

Watts

125/chan

Termination

'N' Female

Temperature Range

-30C to + 60 C

Mechanical Specifications

CT*-150F

CT*-450F

CT*-453F

HEIGHT in (mm)

38 (965)

WIDTH in (mm) 21 (533)
DEPTH in (mm) 21 (533)
WEIGHT lb (kg)

103 (48.1)

90 (40.8)

103 (48.1)

Mounting Information Open-frame cabinet has castors for mobility. Two cabinets may be stacked as  shown to conseve space
WISCO International, Inc. - 10388 W. STATE RD. 84  # 109 MIAMI, FL 33324-4252.  USA
Fax: (954) 370-3997 | E-mail: wiscointl@wiscointl.com

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