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HDMI Signal Amplifier Extends the Range of an HDMI Connection up to 150 Feet
Calrad 55-626A HDMI In-line Signal Amplifier Dongle Adapter
Calrad 55-626A HDMI In-line Signal Amplifier Dongle Adapter
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Sample Application Noise Reduction Diagram
Calrad 55-626A HDMI In-line Signal Amplifier Dongle Adapter
Item# 7900
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  • Amplify an HDMI signal up to 150 feet
  • Supports resolutions up to 1080p
  • No power supply required, receives power from the HDMI cable it is attached to
  • LED power indicator

Essential Info

The Digital Display Working Group (DDWG) has a specification which limits the approved HDMI cable length to 15 meters (approximately 50 feet.) for delivering a full HDTV signals. The HDMI In-line Signal Amplifier Dongle digital interface attaches to the display side connector of an HDMI cable and not only amplifies the signal but it cleans out any noise or digital artifacts from the data and retransmits the picture to the source display. The result is that a high definition video up to 1080p, compressed or uncompressed multi-channel audio, and intelligent format CEC command data can be delivered to 150 feet away from the source component all from one in-line adapter. No external power supply is required as the HDCP compliant amplifier with the adapter receives power from the connected HDMI cable while remaining entirely transparent to the source component and the display monitor. An LED power indicator even lets you know that the device is powered and working properly.

What's Included

  • HDMI In-line Amplifier Dongle
  • More Info

    Signal Correction
    The two main causes of HDMI transmission degradation over cable are attenuation and propagation speed variations of the cable. Cable will attenuate the HD signal levels which can be observed by the reduced height of the EYE. A second effect is timing jitter which is due to the propagation speed difference of each frequency components of the HDMI signal. Both attenuation and timing jitter will cause bit errors in an HD signal. The byproduct of timing jitter and attenuation leads to Inter-Symbol Interference (ISI). The HDMI In-line Amplifier Dongle minimizes this problem to offer a clear signal between components.

    What is HDMI?
    HDMI is a compact audio/video interface for transmitting uncompressed digital data. It represents a digital alternative to consumer analog standards, such as Radio Frequency (RF) coaxial cable, composite video, S-Video, SCART, component video, D-Terminal, and VGA. HDMI connects digital audio/video sources such as set-top boxes, Blu-ray Disc players, personal computers (PCs), video game consoles (such as the PlayStation 3 and Xbox 360), and AV receivers to compatible digital audio devices, computer monitors, and digital televisions. HDMI supports, on a single cable, any TV or PC video format, including standard, enhanced, and high-definition video; up to 8 channels of digital audio; and a Consumer Electronics Control (CEC) connection



    Manufacturer Product No.:55-626A
    Compliance:HDCP, HDMI 1.3
    Maximum Signal Extension:150 feet
    TMDS Rates:Operational from 252Mb/s to 10.2 Gb/s
    Resolution Support:High-Definition up to 1920 x 1080 at 60Hz in up to 48-bits true color pixel format
    Length:Approximately 8"
    Connector Type:19 pin gold plated HDMI Female to Male
    Input DDC Signal:5V p-p (TTL)
    Input Video Signal:1.2V p-p
    Operating Temperature:0° C - 50° C
    Humidity:5% ~ 85% relative humidity
    Warranty:Manufacturer two (2) year

    Important notes:
    Only merchandise credit for defective items returned within 30 days of purchase. No other returns allowed on this item.
    Manufacturer contact information: Calrad Electronics, Tel: (323) 465-2131


    Sample Application  Noise Reduction Diagram     
    Sample Application  Noise Reduction Diagram     


    4 Ratings
    5 star: 25%  (1)
    4 star: 25%  (1)
    3 star: 25%  (1)
    2 star: 0%  (0)
    1 star: 25%  (1)
    Average Customer Rating
    (4 customer ratings)
    Share your thoughts with other customers
    SUZANNE -- san antonio, TX   3/31/2012
    super customer service.
    OLINDO -- concord, NH   2/16/2012
    Worked as described. Very pleased.
    JAMES A -- springfield, MO   12/7/2009
    I have no issues with Smarthome and I will order from them again. The device however did not work for me. I am using it with an NAT T785 Receiver. I believe that there is an issue with the HDMI "handshake" between these devices. NAD is 100% HDMI compliant. Cal Rad claims compliance, but, as I said, it didn't work for me. Smarthome gave me an RMA number, the transaction was hassle free.


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