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MICM-45C HE-12 and HE-4 Series Channelized Audio/Video Modulator by Blonder Tongue

MICM-45C HE-12 and HE-4 Series Channelized Audio/Video Modulator by Blonder Tongue

MICM-45C HE-12 and HE-4 Series Channelized Audio/Video Modulator by Blonder Tongue

  • Brand
    Blonder Tongue
  • SKU
  • Weight
    3.00 lbs
  • Warranty
    1 Year
  • Condition
  • Status
Product Questions? Ask Our Experts!
Out of stock
HE-12 & HE-4 Series Channelized Audio/Video Modulator, +45 dBmV, 54-600 MHz
  • Brand
    Blonder Tongue
  • SKU
  • Weight
    3.00 lbs
  • Warranty
    1 Year
  • Condition
  • Status
Questions? Ask our experts!


The MICM-45 is a professional quality, channelized, heterodyne audio/video modulator which provides modulated RF carrier output on any single VHF channel, including: broadcast TV (2-13), CATV (14-135). It is ideal for placing audio and video onto any unused VHF channel. Any standard audio/video source can be used, such as satellite receivers, television cameras, video tape recorders, or television demodulators. The MICM-45 utilizes SAW filtering with FCC group delay pre-distortion to provide true vestigial sideband selectivity which makes it perfect for use in adjacent channel systems. The MICM-45C takes baseband audio and video and modulates these signals onto the desired output channel. The MICM-45S takes baseband L/R audio and video and modulates these signals into the desired output channel. The heterodyne conversion process used in the unit employs a crystal referenced, PLL synthesized local oscillator. This guarantees rock solid, no-drift output for the life of the modulator. The MICM-45 meets FCC Docket 21006 aeronautical frequency offset requirements (±5 kHz video carrier accuracy). The modulator accepts standard polarity (sync negative) video in the range of 0.7 to 2.5 V pp. It has field defeatable audio pre-emphasis to provide stereo compatibility with any external BTSC stereo generator providing a composite stereo baseband output. The MICM-45S is a stereo A/V modulator providing a stereo audio and video modulated RF carrier on any single VHF channel. All other features and specifications are identical to the MICM-45C except as noted.

  • 5-860 MHz Channelized Audio/Video Modulator
  • SAW Filtered to True Adjacent Channel Response
  • Die-Cast Chassis Offers Superior Protection Against Ingress or Egress
  • Front Panel Accessible Level Controls for Easy Set-Up and Adjustment
  • Integrated Stereo Encoder Available
  • RF
    • Frequency Range
      • 54-860 MHz (Broadcast 2-13, Cable 14-135)
    • Output Lev el
      • +45 dBmV
    • Output Level Range
      • 10 dB continuously adjustable
    • Aural/Visual Carrier Ratio
      • -11 to -19 dB continuously adjustable
    • Visual Carrier Frequency Tolerance
      • ±10 kHz (standard channels), ± 5 kHz (aeronautical channels)
    • Aural Carrier
      • 4.5 MHz above visual
    • Frequency Setting
      • ±1.5 kHz
    • Spurious Outputs
      • -60 dBc, min
    • C/N Ratio In Channel
      • 60 dB
    • Broadband Noise
      • -90 dB
    • Output Return Loss
      • 12 dB
    • IF (Internal) Frequency
      • 45.750 MHz
  • Video
    • Input Level
      • 1.0 V p-p for 87.5 % Modulation
    • Frequency Response fv -0.5 MHz to fv +4.2 MHz
      • ±1.0 dB
    • Video C/N
      • 60 dB (4 MHz BW)
    • P-P Video to RMS Hum Ratio
      • 60 dB
    • Differential Gain
      • ±4.0 % @ 87.5% Modulation
    • Differential Phase
      • ± 2° @ 87.5% Modulation
    • Input Return Loss
      • 18 dB
  • Audio
    • Input Level
      • 140 mV RMS for 25 kHz Peak Deviation
    • Input Impedance
      • 10K O, Unbalanced
    • Frequency Range
      • 20 Hz to 20 kHz (MICM-45C)
    • Frequency Response
      • ±1.0 dB, (50 Hz to 12 kHz) Reference to Std. 75 µs Pre-emphasis (MICM-45C) ± 0.3 dB (50 Hz to 50 kHz) (MICM-45S) in Stereo Configuration w/o pre-emphasis
    • Total Harmonic Distortion (%)
      • 1.0 at 25 kHz Deviation
    • Stereo Separation (MICM-45S)
      • 50 Hz - 100 Hz
        • 15 dB
      • 100 Hz - 1 kHz
        • 25 dB
      • 12 kHz
        • 18 dB
    • Aural Intercarrier
      • ±5 kHz (0° to +50° C), std.
  • General
    • External Power Requirements
      • 12 VDC @ 160 mA +5 VDC @ 130 mA (MICM-C) +5 VDC @180 mA (MICM-S)
    • Temperature Range
      • 0° to +50° C
  • Mechanical
    • Dimensions (W x H x D)
      • 1.20 x 3.5 x 7.50 in., 29 x 89 x 191 mm
    • Weight
      • 0.65 lbs., 0.30 kg
  • Connectors/Impedance
    • Audio Input
      • RCA Female (MICM-45C)
    • L/R Audio Inputs
      • RCA Female
    • Video Input
      • 75 O "F" Female
    • RF Output
      • 75 O "F" Female
  • Controls
    • Video Level
      • Control
    • Audio Level
      • Control
    • Aural Carrier Level
      • Control
    • RF Output Level
      • Control
  • Indicators
    • Power On
      • LED, Green
    • Video Over Modulation
      • LED, Red (MICM-45S)
    • Audio Over Modulation
      • LED, Red (MICM-45S)
    • Stereo Indicator
      • LED, Red (MICM-45S)
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.


Major Credit Cards: Visa, MasterCard, Discover and American Express.
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