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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" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
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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]
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4.4 ★★★★★
Based on 24 reviews
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Product Reviews
★★★★★ 5
Loving it so far
Format: Paperback, Format: Paperback
I really didn't know what to expect with a book full of names, but I love a murder mystery & needed more post work hobbies, so I thought this would be interesting & was I right. This book has been so engaging and keeps my mind in a good focused place instead of the usual dissociation after a stressful day of work or doom scrolling. It was nice to come up with my own little system as to how I would solve the clues on each page & keep track of everything. If you're interested in puzzles, or just need something interesting to keep busy, I feel this is a great concept to solve a mystery. 100% would recommend.
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Reviewed in the United States on June 1, 2026
★★★★★ 5
Love it
Format: Paperback
Excellent book. Whole I was watching Tik Tok so.eone gave the answer and ruined my chance to finish it. I was within 1 to 2 days of solving it. Fun and challenging.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 23, 2026
★★★★★ 5
So much fun! And typos have been fixed!
Format: Paperback, Format: Paperback
This was so much fun! Some reviews will mention that the solution is spoiled at the end or there is some misspellings but it should be fixed. In the book you get an option to go to her blog. I 100% recommend checking that and it’s where you will check your answer! I got my whole family into this book and everyone is enjoying finding the name. I definitely recommend if you want to work on something that challenges your brain!
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Reviewed in the United States on May 27, 2026
★★★★★ 5
SO MUCH FUN!!
Format: Paperback, Format: Paperback
Just started it but.....This book has been so much fun. Not just for me but my husband and kids keep stealing it from me. So now I have to order more for them.... highly recommend if you are into mystery puzzles. Best one yet... can't wait to see more editions come out!!!
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Frustratingly fun!
Format: Paperback
Delightfully frustrating looking through pages and pages of names but it’s quite fun if you have the patience. I bought it to keep me entertained while waiting for my broken leg to heal. I was determined to find it! Looking forward to doing another one.
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Reviewed in the United States on May 22, 2026