QDA4-45 Distribution Amp Combiner

Type: Accessories , RF Modulators
Part Number: 5092-001
Size: 8.500 wide x 1.750 high x 6.000 deep
Weight: 1.100
Distribution: AV over RF
Released:


Where to Buy

QDA4-45 Data Sheet
QDA4-45 Product Manual

  • qda4-45 Front View
  • qda4-45 back view

More about Accessories

Contemporary Research offers a variety of product accessories to necessitate or enhance the functionality of AV products.

About QDA4-45 Distribution Amp Combiner

The Contemporary Research QDA4-45 is an amplified RF combiner that can switch between one or four inputs, with adjustable amplification up to 32 dB of gain.

Related Equipment & Software

Accessories

Contemporary Research offers a variety of product accessories to necessitate or enhance the functionality of AV products.

Full Description & Specifications

The Contemporary Research QDA4-45 is an amplified RF combiner that can switch between one or four inputs, with adjustable amplification up to 32 dB of gain.

Designed for QMOD HDTV applications, the QDA4-45 can receive an RF feed from QMOD modulators or QCA9-33 Active Combiners. Inputs can be switched between one or four inputs, with selectable gain.

The compact QDA4-45 mounts in a single rack space using either the included Contemporary Research RKU universal rack mount kit or optional RK1 single rack mount kit or RK2EZ dual rack mount kit. The units are wholly designed and manufactured in the USA.

  • Switches between one input or four input combiner
  • Adds up to 32 dB gain for one input, 25 dB for 4 inputs
  • Front-panel gain adjustment and LCD level display
  • Provides a maximum output level of up to 50 dBmV
  • Wide-band, low noise amplifier
  • Low power, draws less than 8.5 watts
  • Compact metal enclosure, mounts in 1 RU using the RKU, RK1, or RK2EZ rack mount kits


Distribution: AV over RF

Physical:
  • 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.
    • Tip: mounting adjacent to CR dual-channel QMODs can blocks air flow

Front Panel:
  • Input Selection, 1 or 4 inputs, Green LED indicators
  • RF Gain Selection with LCD display, 0-25 dB for four inputs, 1-32 dB for one input

Back Panel:
  • Inputs: 4 F Connectors
  • Amp Out: 1 F connector
  • DC Power: Power 2.1 mm coaxial jack (inside center conductor positive), 700 mA maximum, 11.5 to 12.7 VDC, 12 VDC typical
    • Tip: Use included 12 VDC power supply, do not share DC power with other DC supplies (voltage is often 13V and above)

Inputs:
  • Max Input Level: 45 dBmV
  • Combiner Isolation: 38 dB typical, 30 dB minimum, 57 - 861 MHz
  • Return Loss: 30 dB typical

Output:
  • Input 1 only: 1-32 dB gain, low noise, linear performance through 861 MHz
  • All Inputs: 0-25 dB gain (7 dB loss from combiner)
  • Max Level: Maximum level 50 dBmV
  • CTB: Composite Triple Beat -75 dB, 132 channels at +30 dBmV per channel
  • Noise: Noise Figure 4.5 typical
  • Return Loss: 20 dB typical

Includes:
  • 5401-001, PS12-1.0 Power Supply
  • 5008-025, Universal Rack Mount Kit
PS12-1.5 Product Image

PS12-1.0 Power Supply

12VDC 1A Power Supply