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Home   Modulators   Contemporary Research QCA9-33

Contemporary Research QCA9-33
Active Combiner, 8+1 Inputs, 33 dB Max Level

Manufacturer SKU: 5081-001
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MSRP: $368.00
Our Price: $313.00
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Product Highlights
  • Combines 8 high-level channels (QMOD 29 dBmV) and one low level input (Cable, ICE-HE at 10-18 dBmV), cascade multiple QCA9-33 units for up to 72 channels in one array
  • Amplifies with a 3 dB net gain, up to maximum 33 dBmV output level
  • Provides high-isolation combining
  • Operates with an exremely low noise figure of 1.8, low power of less than 2W
 
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QMOD 8 Channel RF Combiner

The Contemporary Research QCA9-33, is an active RF combiner that includes 8 high-level inputs and 1 low-level input, combining with high isolation as well as amplifying up to a 33 dBmV output level. Created for QMOD HDTV applications, the eight RF inputs typically receive 29 dBmV RF from QMOD HDTV modulators. The ninth input is for up to 19 dBmV RF signals, such as incoming cable feed, a control channel from an ICE-HE Head End control modulator, or any other QMOD or QCA9-33. Up to 8 QCA9-33 combiners can feed a single combiner to deliver up to 76 channels.

Use our signal strength calculator to determine how much signal you need, click here for the excel spreadsheet.

The extremely low-noise, wideband 860 MHz amplifier compensates for combining losses and adds 3 dBmV of gain, typically supplying a total output of up to 33 dBmV. Employing new RF technology, the QCA9-33 delivers higher isolation, quality, and noise performance over analog-era components; the noise factor is a very low 1.8, four or more times less than other active combiners.

The QCA9-33 amplifies with a 3 dBmV net gain, up to maximum 33 dBmV output level

The QCA9-33 combines 8 high-level channels and one low level input, you easily cascade multiple QCA9-33 units for up to 72 channels in one array.

Applications of Use

  • Combine 9 inputs to drive a medium-sized RF system
  • 9 QMOD Modulators
  • 8 QMOD Modulators plus ICE-HE Head End
  • 8 QMOD Modulators plus cable feed
  • Feed output to a second CCA9-33 to combine up to 17 channels
  • Feed 8 QCA9-33 units to one QCA9-33 to combine up to 72 channels without signal loss
  • Feed combined output to a launch amplifier for larger systems
  • Mount separately from next-gen QMODs, unit will block airflow

Inputs:
8 High-level Inputs - Max input 30 dBmV
1 Low-level Input - Max input 19 dBmV
Isolation: 38 dB typical, 30 dB minimum, 54 - 860 MHz
Input Return Loss: 30 dB typical
Ouputs:
17 dBmV amplifier, extremely low noise, linear performance through 860 MHz
Net Level: + 3 db gain after combining
Maximum level: +33 dBmV
Composite Triple Beat -75 dBc, 132 channels at +30 dBmV per channel
Noise Figure 1.8 typical
Output Return Loss: 20 dB typical
Back Panel:
8 Input F Connectors
1 Low-level Input F connector
1 Amp Out F connector
Power LED
Power: 2.1mm coaxial jack (inside center conductor positive), 170 mA maximum, 11.5 to 15 VDC, 12 VDC typical (may be unregulated)
Additional Specs:
Size: 8.5" [216mm] wide x 1.75" [44mm] height (1RU) x 6.0" [153mm] deep
Weight: 1.1 lbs [500g]
Enclosure: Durable metal enclosure, rack mountable. Do not mount adjacent to next-gen QMODs (blocks air flow)
Includes: PS12-500 12 VDC, 500 mA power supply &RKU, Universal Rack Mount Kit
Warranty: 2 years

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Accessories:

Contemporary Research QDA4-45 RF Distribution Amp and Combiner, 4 Inputs, 50dB
Your Price: $409.00
Contemporary Research RK1 Single Rack Kit for Tuners, QMODs & Combiners
Your Price: $38.00
Contemporary Research RK2EZ Dual Rack Kit for Tuners, QMODs, and Combiners
Your Price: $38.00
Contemporary Research PS12-1.0 12VDC 1.0A Power Supply
Your Price: $26.00

Downloads:

  • Contemporary Research QCA9-33 Specifications (PDF)
  • Contemporary Research QCA9-33 Manual (PDF)
  • Contemporary Research QCA9-33 CAD Drawing (PDF)

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