1.2 GHz Variable Attenuators produce flat (even) loss across Cable TV forward and reverse frequency band. The attenuators are used during amplifier balancing to adjust amplifier signal levels as needed. The variable loss produced (dB) is between 0 dB to 10 dB or 0 dB to 20 dB. The attenuators are rated for operation up to 1.2 GHz. Within specific amplifier types, the attenuators are also used as equalizers.
0 - 1200
Insertion Loss at 5 MHz
≥ 21.0 @ 0 - 204 MHz
≥ 15.0 @ 205 - 750 MHz
≥ 12.0 @ 751 - 860 MHz
≥ 11.0 @ 861 - 1200 MHz
Note: Unless otherwise noted, all specifications reflect typical performance and are referenced to 68°F (20°C). Specifications are based upon measurements made in accordance with SCTE/ANSI standards (where applicable), using standard frequency assignments.
Shaft diameter Ф (mm)
Shaft length L (mm)
2, 3, 5, 8, 18, 21, 24
SJ-B-10 dB: 1200 MHz, 10 dB, blue box, red knob, 8 mm knob, transparence cover.
SJ-B-20 dB: 1200 MHz, 20 dB, blue box, red knob, 8 mm knob, transparence cover.
When you want different type you must add label.
SJ-B-10 dB (blue box, blue knob, 5 mm knob, transparence cover)
Shanghai Qianjin Electronic equipment Co., LTD was founded in 1991. It is a scale and specialized CATV equipment manufacturer with research, development and production. Our company has been identified as high-tech enterprises, strict compliance with international standards and pass GB / T 9001 quality management system certification.
Our good reputation and perfect product service system has won praise from customers. Products are sold to Europe, America, Asia and other countries and regions, as OEM / ODM supplier.
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