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AD-1B Pro Agile Audio/Video Demodulator by Blonder Tongue

AD-1B Pro Agile Audio/Video Demodulator by Blonder Tongue

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The AD-1 is a professional quality, agile audio/video demodulator. The unit provides audio and video outputs from any analog input channel in the 54 to 88 and 108 to 806 MHz frequency range.
  • Brand
    Blonder Tongue
  • SKU
  • Weight
    7.00 lbs
  • Warranty
    1 Year
  • Condition
  • Status
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The AD-1 is a professional quality, agile audio/video demodulator. The unit provides audio and video outputs from any analog input channel in the 54 to 88 and 108 to 806 MHz frequency range. The AD-1 is ideal for signal monitoring and signal conditioning (audio/video processing and remodulation) applications. Agile channel selection permits on-the-fly channel changes. The AD-1 takes a single NTSC channel in the 54 to 88 and 108 to 806 MHz frequency range and demodulates the audio and video information. Baseband audio and video as well as 4.5 MHz audio subcarrier and multiplex audio are provided as outputs. The AD-1 features phase locked loop synthesized frequency control with a tuning increment of 250 kHz. Channel selection is accomplished with the use of simple to use front panel accessible dip switches. A Nyquist filter provides stable, accurate demodulation of the vestigial sideband signal. Additionally, this filter minimizes distortion and preserves the timing of the signal. Delayed AGC circuitry automatically compensates for input signal variations. The AD-1 also utilizes a quasi-synchronous video detector that has low differential gain and minimal phase distortion. A quadrature audio detector delivers a very low distortion audio output. The broadband multiplex audio, 4.5 MHz audio subcarrier, or the optional BTSC stereo (L/R) or SAP outputs make the AD-1 ideal for any stereo application.

  • Stereo BTSC Outputs (Option 25)
  • Rack Mountable - 1 EIA (1.75") Rack Space
  • 250 kHz Tuning Increment - Supports Broadcast, CATVand UHF Assignments Including HRC & IRC
  • AGC Circuitry Automatically Compensates for InputLevel Variations
  • 4.5 MHz Audio Subcarrier and Broadband MultiplexAudio Outputs
  • RF
    • Input Frequency Range
    • Standard
      • 54-88 & 108-806 MHz
    • Option 17
      • Sub-band Input 7-49 MHz
  • Channels
    • VHF, UHF (Input) CATV (STD,HRC,IRC)
  • Tuning Increment
    • 250 kHz
  • Input Level - Max
    • +20 dBmV
  • Noise Figure
  • VHF
    • 8-11 dB
  • UHF
    • 10 dB
  • Image Rejection - Min
  • VHF
    • 65 dB
  • UHF
    • 50 dB
  • Input/Output Impedance
    • 75ohm
  • Video
    • Frequency Response fv+25 Hz to fv+4.0 MHz
      • Settable to ±1.0 dB
    • Output Level
      • 1.0 V p-p
    • Differential Gain
      • 0.03
    • Differential Phase
      • 1.5 °
    • Group Delay Response
      • ±50 ns
    • Output Impedance
      • 75?
    • Output Return Loss
      • 25 dB
  • Audio - Mono
    • Baseband Frequency Response 50 Hz to 15 KHz
      • ± 0.75 dB
    • Output Level
      • 500 mv RMS (Opt 29, 1.4 V RMS)
    • Impedance
      • 600? Unbalanced (STD), (Opt. 29, 600?, Balanced)
    • Audio Signal-to-Noise
      • 57 dB
    • Total Harmonic Distortion
      • 0.006
    • Multiplexed Frequency Response
    • 50 Hz to 100 kHz
      • ±0.2 dB
    • Output Level
      • 500 mV RMS
    • Impedance
      • 600?, unbalanced
  • Audio - Stereo (Option 25)
    • Baseband Frequency Response 50 Hz to 12 KHz (in-phase L/R inputs)
      • +/- 0.75 dB
    • Output Level Left or Right
      • 4.0 Vp-p
    • Impedance
      • 600?, Balanced
    • Separation 50 Hz – 10 KHz
      • 20 dB
    • Audio Signal-to-Noise
      • 60 dB
    • Total Harmonic Distortion
      • <0.5%
    • 4.5 MHz Subcarrier Output Level
      • +28 dBmV
    • Impedance
      • 75?
  • General
    • Power Requirements
    • Voltage
      • 117, ±10% VAC
    • Frequency
      • 60 Hz
    • Power
      • 16 W
  • Fuse
    • 1/4 A
  • Temperature Range
    • 0 to +50 °C
  • Mechanical
    • Dimensions (W x H x D)
      • 19.0 x 1.75 x 14.5 in. 483 x 44 x 368 mm
    • Weight
      • 5.5 lbs., 2.50 kg
  • Connectors
    • RF Input
    • Standard - VHF/UHF
      • "F" Female
  • Option 17 - Sub-band Input
    • "F" Female
  • Video Output
    • "F" Female
  • Baseband Audio Output
    • RCA Phono, Female (STD), Terminal Strip (Opt 25 + 29)
  • Multiplexed (MPX) Audio Output
    • RCA Phono, Female (STD Only)
  • 4.5 MHz Subcarrier Audio Output
    • "F" Female
  • Controls
    • Frequency Selection
      • DIP Switches
    • Video Response
      • Control
    • Option 17 - Sub-band Input Channels
      • Slide Switch
    • Option 25 - L/R or SAP Audio Output
      • Contact Closure
  • Indicators
    • Power On
      • LED, Green
    • Stereo
      • LED, Red (Opt 25)
Free Ground Shipping
We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.

UPS Ground
UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations.UPS Ground does not deliver on Saturdays, Sundays or Holidays.

USPS Priority Mail/USPS Express Mail For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.

Air Shipment
Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.

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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Paypal: You can select an option of Paying with Paypal in our shopping cart.
Money orders: and personal checks or company checks (may take up to 10 days to clear).
Wire Transfer: ( Bank Transfer ) Only for the amount over $500. Contact us for the bank details.
Phone Orders: To place a phone order please call 1.888.902.3309 or 1.916.246.6264 and one of our Customer Service Representatives will take your order (8:00am - 6.00pm PST).

Purchase order: Fax purchase orders to 1.916.672.2557

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