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ZCM-48-550 Broadband CATV Distribution Amplifier by Blonder Tongue

ZCM-48-550 Broadband CATV Distribution Amplifier by Blonder Tongue

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The ZCM-48-550 is an affordable high gain indoor broadband distribution amplifier. The ideal application for this amplifier is for use in a distribution system where the input source is a cable drop or the output of a MATV/SMATV headend.
  • Brand
    Blonder Tongue
  • SKU
  • Weight
    5.00 lbs
  • Warranty
    1 Year
  • Condition
  • Status
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The ZCM-48-550 is an affordable high gain indoor broadband distribution amplifier. The ideal application for this amplifier is for use in a distribution system where the input source is a “cable drop” or the output of a MATV/SMATV headend. The ZCM-48-550 provides frequency coverage of 54 to 550 MHz and has a flat 50 dB of operational gain. The amplifier also has built-in variable gain and slope controls. This amplifier uses a single push-pull hybrid module and discrete driver stages, capable of delivering high output levels with low distortion, even in systems with 77 channels of programming. A separate preamp (18 dB gain) and postamp (32 dB gain) are included with an external RF loop used to provide overall output capability. The ZCM-48 Series products are housed in compact, aluminum chassis that provides excellent heat dissipation. The ZCM- 48 Series products are provided with an external UL® listed power transformer for use with 117 VAC power.

  • 550 MHz High Gain Distribution Amplifier
  • Configurable With or Without Preamp Section by External Coax Jumper
  • Built-In Variable Gain and Slope Controls
  • External UL Listed Power Transformer
  • RF
    • Frequency Range
      • 54-550 MHz
    • Channel Loading
      • 77
    • Flatness
      • ±1.00 dB
    • Overall Gain
      • 50 dB
    • Noise Figure (a)
      • 5.5 dB
    • Output Level
      • +36/+44 dBmV
    • Gain Control Range
      • 10 dB
    • Slope Control Range
      • 10 dB
    • Composite Triple Beat - CTB(b)
      • -66 dB
    • Cross Modulation - XMOD (b)
      • -64 dB
    • Composite Second Order - CSO (b)
      • -66 dB
    • Hum Modulation
      • -65 dB
    • Number Of Hybrids
      • 1
    • Hybrid Technology
      • Push-Pull
    • Impedance - All Ports
      • 75 O
    • Return Loss
      • Input
        • 14 dB
      • Output
        • 16 dB
  • General
    • Power Requirements
      • Voltage
        • 117, ±10% VAC
      • Frequency
        • 60 Hz
      • Power
        • 19 W
    • Temperature Range
      • -10 to +50 °C
  • Mechanical
    • Dimensions (L x W x D)
      • 7.50 x 5.63 x 2.00 in. 191 x 143 x 51 mm
    • Weight
      • 3.1 lbs 1.36 kg
  • Controls (Top Panel)
    • Gain
      • Control
    • Slope
      • Control
  • Connectors (Top Panel)
    • RF Input
      • "F" Female
    • RF Output
      • "F" Female
    • Notes
      • (a) Measured at full gain with 0dB slope. (b) At rated output capability and channel loading.
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International Customers
We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.

Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.


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We Offer A 30-Day Money Back Guarantee: 
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.

Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.

If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.

No Returns/Exchanges on the following:

TVs and monitors 20" and larger
Special Order merchandise
Any item indicated on the website as non-returnable

For more information see our official Return Policy

  • Shipping Info
    We offer free ground shipping on every purchase of $300 and more for US and US territory. We deliver worldwide.
  • Payment Methods

  • Return Policy
    We Offer a 30-Day Money Back Guarantee