SKU: 62168007802

Blonder Tongue MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder

Sale price$43211.25 Regular price$48012.50
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Description

Blonder Tongue MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and DecoderThe MDDM 860 Micro ATSC QAM to NTSC Audio Video Demodulator and Decoder by Blonder Tongue receives one input signal in ATSC 8VSB (digital off air) or QAM (digital cable) format and delivers one NTSC composite analog video and stereo audio output. The unit allows you to view a digital off air program on an analog TV set. Headends processing analog broadcasts using Blonder Tongue's MIDM demodulators and MICM modulators can be upgraded to process digital

The MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder by Blonder Tongue receives one input signal in ATSC 8VSB (digital off-air) or QAM (digital cable) format and delivers one NTSC composite analog video and stereo audio output. The unit allows you to view a digital off-air program on an analog TV set. Headends processing analog broadcasts using Blonder Tongue's MIDM demodulators and MICM modulators can be upgraded to process digital broadcasts by replacing the MIDM with a MDDM.

The unit features a front panel custom mini USB to RS232 interface connector for program control. The front panel provides up and down control channel selection and a two digit display to identify the program channel as well as a 1 digit RF channel display to indicate the frequency/channel plan.

Compact design allows for deployment of 6 channels (6 MDDM modules + 6 MICM modulators) in 2RU
NTSC composite analog video output is in 480i format and supports closed captioning (EIA-608)
Input standards supported are digital off-air (8VSB) and digital cable (ITU-B QAM 64 and 256)
Scans all 8VSB or QAM channels and stores in memory for quick channel selection
Demodulates HDTV/SDTV digital signals to NTSC video and analog L/R audio
On-site firmware updates/status monitoring available through front-panel
Die-cast chassis offers protection against ingress or egress
Adjustable picture sizes for 16:9 to 4:3 image conversion
Supports mono, stereo, and SAP audio modes
In the Box
Blonder Tongue MDDM-860 Micro ATSC/QAM to NTSC Audio Video Demodulator and Decoder
  • Limited 1-Year Warranty
Input
Connector "F" female
Standards 8VSB: ATSC Digital Television Standard, A/53E
QAM: ITU-T J.83 (64 and 256 QAM)
8VSB Mode Tuning Range: UHF (NTSC channels 14-78), VHF (NTSC channels 2-13)
Symbol Rate: 10.762 Msymbols/sec
Bandwidth: 6 MHz
QAM Mode Tuning Range: CATV (NTSC channels 2-135)
Symbol Rate: 5.3606 Msymbols/sec (QAM 256); 5.057 Msymbols/sec (QAM 64) - auto detect
Bandwidth: 6 MHz
Single Channel Power Level -32 to +45 dBmV
8VSB Power Level -20 to +30 dBmV
QAM Power Level -20 to +20 dBmV
Return Loss 12 dB
Impedance 75 ?
Output
Connector Video: "F" female
Audio: RCA; left & right
NTSC Composite Video Level: 1 V peak-to-peak
Flatness: 1.0 dB p/v (30 Hz - 4.2 MHz)
Video to Noise Ratio: 70 dB
Differential Gain: �0.75%
Differential Phase: �0.50 degree
Format: 480i
Aspect Ratio: AFD, center cut, letterbox, full, zoom 1, zoom 2
Closed Captioning: EIA-608
Analog Audio Level: 1.0 - 1.2 V peak-to-peak (at -20 dBFs input), 10.0 - 10.5 V peak-to-peak (at 0 dBFs input)
Frequency Response: 2.0 dB p/v (30 Hz - 20 kHz)
Audio Signal-to-Noise Ratio: 67 dB (at -20 dBFs input)
Modes Stereo, mono, SAP
Alarms/Monitoring/Control
Front Panel Indicators Major program channel (2 digit LED display)
Minor program channel (1 digit LED display)
Channel scan (2 & 1 digit LED displays)
+100 Channel (red LED)
SNR (2- & 1-digit LED displays)
QAM LED (red LED)
No Lock (flashing QAM LED)
Picture size (2 & 1 digit LED displays)
Audio mode (2 & 1 digit LED displays)
Firmware revision (2 digit LED display)
Software revision (2 & 1 digit LED displays)
Unit reset (2 & 1 digit LED displays)
Front Panel Control CH UP/DN push-buttons (increment major or minor channel up/down)
ENT push-button (enters or confirms selection)
SCAN push & hold-button (initiates channel scan)
PIC SIZE push-button (adjusts picture size/aspect ratio)
AUD MODE push-button (adjusts audio mode and closed captioning)
SNR push-button (measures input signal-to-noise ratio)
QAM/8VSB push & hold-button (toggles between QAM & 8VSB)
ENT & SNR simultaneously (stops scan at anytime)
PIC SIZE & AUD MODE simultaneously (unit reset)
PROG MON (custom mini USB-to-RS232 interface for control & monitoring)
General
Power 110 VAC, 60 Hz or 220 VAC, 50 Hz
Power Dissipation 7 W (per MDDM module)
Operating Temperature 32 to 122�F (0 to 50�C)
Storage Temperature -13 to 158�F (-25 to 70�C)
Operating Humidity 0 to 95% RH @ 35�C max, non-condensation
Storage Humidity 0 to 95% RH @ 35�C max, non-condensation
Dimensions (W x D x H) 1.15 x 7.50 x 3.50" (2.92 x 19.05 x 8.89 cm)
Weight 0.8 lb (0.36 kg)
Packaging Info
Package Weight 0.9 lb
Box Dimensions (LxWxH) 10.472 x 4.252 x 1.339"
All product and company names are trademarks™ or registered® trademarks of their respective holders. Use of them does not imply any affiliation with or endorsement by them.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 62168007802

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4.3 ★★★★★
Based on 17 reviews
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P
Verified Purchase
patricia
Cuba, US
★★★★★ 3
the height is only 16"
Size: coffee table leg
The height is only 16". From the description it appears to be 24" wide and 24" high.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
C
CMC20
Lake Worth, US
★★★★★ 4
Good DIY Pipe Legs but Powder Coat Quality Lacks
Size: side table leg, Size: side table leg
These industrial style pipe legs make building a DIY end table easy and the kit saves a trip to the hardware store. The fittings go together normally and assembly is simple. Comes individually wrapped. My main issue is the powder coating looks and feels cheap and rubs off easily. The pipes already had marks from touching each other from unboxing. If you do not mind some wear on the finish over time this is a decent purchase. The metal at the hardware store will be thicker and more durable but will cost more. I’d recommend based on ease of having a kit and it being delivered saving me a trip.
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Reviewed in the United States on December 30, 2025
M
Mark Weinberg
New York, US
★★★★★ 5
Stable, attractive, and easy to turn into a table with your choice of top
Size: side table leg
The X-shape of the table legs - constructed with solid metal flanges, T-joints, X-joints and 1-inch diameter pipes - provides a strong and sturdy base for a wood top. The legs have adjustable feet pads to prevent scratches and ensure stability. Assembly of the legs is relatively simple (the instructions are clear) but you will need your own tools to attach a top. The industrial design is especially well suited to rec room or finished basement use. I am adding a 28" diameter raw edge slab of wood from a recently felled tree as the top and it is very attractive. (Photo unavailable because after I made certain it would work I sent the slab out for drying and finishing.) If you want a custom table and have a particular piece of wood you want to use, these legs are an excellent choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 18, 2026
G
Grammar Guru
Charlottesville, US
★★★★★ 5
Very nice kit: Beware it is NOT heavy duty plumbing pipe though!
Size: side table leg
I want to give this kit a high rating, but I need to address the "truth in advertising" bit since there may be an important disconnect between what you think you are getting and what actually comes in the box. Black plumbing used for shelving or table legs is part of an important niche in interior design. I like the industrial loft look myself and have a variety of glass, steel, and masonry elements in my home. This kit fits that look and provides plenty of "strength" for most domestic uses, like shelves or coffee tables. But they are NOT "industrial pipe" or "maximum durability pipe." Note the phrase "cast iron finish feet," which together with the other claims might lead you to think these are cast plumbing fittings. They are NOT! The feet and flanges feel like electrical conduit fittings, and the pipe sections are likely aluminum. They might be electrical or they might be multi-use, lightweight pipe. While all this might lead you to think that you're getting a truly retro, heavy-duty pipe kit made of black plumbing pipe, you are not. But, does it matter? Depends. I find the lighter pipe's smooth finish a nice "tone-down" from the rough plumbing look. All together, this kit provides plenty of strength for most furniture and the rustic pipe look, but with a nicer, lighter finish. To me that is a plus--this is a very nice kit and costs less that if you'd pieced it together from real plumbing parts (I priced it out to compare), and looks retro but cleaner. I knew what to expect because while I got this kit free on Vine, I had purchased a nearly identical kit from another seller last year. So, I'm giving it 5 stars for what it actually is and for the price, JUST BE AWARE THE NARRATIVE IS MISLEADING. Which is unfortunate because just like some people might want the heavier pipe, I'm betting more would be attracted to the look with a cleaner, lighter feel.
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Reviewed in the United States on December 31, 2025
E
Verified Purchase
Elisa
Natrona Heights, US
★★★★★ 5
Wonderful additional to our dining room.
Model: Model B with Removable Tray
A great addition in our dining room. Color and style were a perfect match. Solid construction and easy to put together. Casters work great and lots of room for all sorts of beverages. Great value.
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Reviewed in the United States on June 15, 2025

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