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Home   HDTV Modulators   QMOD   Combiners   Contemporary Research   QCA9-33

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

Manufacturer SKU: 5081-001
MSRP: $368.00
Your Price: $313.00
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Top QCA9-33 Specifications
  • 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 dBmV 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 2 W
 
 
  • Product Details
  • Downloads (2)

Active Combiner

The Contemporary Research QCA9-33, is an active RF combiner that incorporates 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. 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.

Downloads:

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