Continue Shopping View Cart
Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Free Shipping Promo Box

FREE SHIPPING No Minimum Order!

SHOP MARKERTEK EVERYDAY for all of your needs. Free shipping on almost every order placed on our website.
Special order & oversized freight intensive items ship at an additional cost. Continental US orders only.

Fast Economical International Shipping
Markertek makes it EASY for our international customers to get their orders!

At check-out you can view our very affordable international shipping rates that are ALL-INCLUSIVE with your GUARANTEED LANDED COST and NO SURPRISE FEES!

*Economy International Shipping delivery time is approximately 7-14 days. Economy International Shipping is available to select countries. Not all products are eligible.

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers

Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

Blonder Tongue MICM-45C-18 45 dBmV AV Modulator Channel 18

    Blonder Tongue MICM-45C-18 45 dBmV AV Modulator Channel 18

    Item #: MICM-45C-18   •   MFG #: MICM-45C-18


    This item is no longer available.
    Ask a Markertek Expert if you need assistance finding an appropriate substitute.



    Item unavailable. Please select another option.

    Items similar to the MICM-45C-18


    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.

    • Features

      • 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
    • Specifications

      • RF:
      • Frequency Range54-860 MHz (Broadcast 2-13, Cable 14-135)
      • Output Lev el+45 dBmV
      • Output Level Range10 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 Carrier4.5 MHz above visual
      • Frequency Setting±1.5 kHz
      • Spurious Outputs-60 dBc, min
      • C/N Ratio In Channel60 dB
      • Broadband Noise-90 dB
      • Output Return Loss12 dB
      • IF (Internal) Frequency45.750 MHz

      • VideoInput 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/N60 dB (4 MHz BW)
      • P-P Video to RMS Hum Ratio60 dB
      • Differential Gain±4.0 % @ 87.5% Modulation
      • Differential Phase± 2° @ 87.5% Modulation
      • Input Return Loss18 dB

      • Genera:
      • External Power Requirements12 VDC @ 160 mA +5 VDC @ 130 mA (MICM-C) +5 VDC @180 mA (MICM-S)
      • Temperature Range0° to +50° C

      • Audio:
      • Input Level140 mV RMS for 25 kHz Peak Deviation
      • Input Impedance10K O, Unbalanced
      • Frequency Range20 Hz to 20 kHz (MICM-45C)
      • Frequency Response±1.0 dB, (50 Hz to 12 kHz) Reference to Std. 75 æs 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 Hz15 dB
      • 100 Hz - 1 kHz25 dB
      • 12 kHz18 dB
      • Aural Intercarrier±5 kHz (0° to +50° C), std.

      • Mechanical:
      • Dimensions (W x H x D)1.20 x 3.5 x 7.50 in., 29 x 89 x 191 mm
      • Weight0.65 lbs., 0.30 kg
      • Connectors/Impedance
      • Audio Input: RCA Female (MICM-45C)
      • L/R Audio Inputs: RCA Female
      • Video Input75 O "F" Female
      • RF Output75 O "F" Female
      • ControlsVideo LevelControl
      • Audio LevelControl
      • Aural Carrier Level Control
      • RF Output Leve Control

    Add Accessories for your MICM-45C-18: