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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.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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
4.7 ★★★★★
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Product Reviews
★★★★★ 5
The perfect hose?
Size: 50ft, Color: Black
I bought two cheaper hoses prior to this hose, and both of them were unusable. One so stiff it could barely uncoil and the other was soft, but would tangle and kink as soon as turned on.
This hose is perfect and has neither of those problems - it doesn’t kink or get tangled and it is soft and pliable and lightweight. It’s small when not in use and expands when turned on. The fact that it contracts when turned off, makes it easy to get the water out of the hose.
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Reviewed in the United States on May 8, 2026
★★★★★ 5
Best water hose to buy
Size: 150ft, Color: Black
excellent sprayer included and best hose to buy...flexible & expands even further than advertised, Sturdy and allows full stream of water flow without any kinks in hose line. good buy! easy to use..made of strong material to handle outdoor environment over time. I BOUGHT 3 MORE!
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Reviewed in the United States on May 14, 2026
★★★★★ 5
Great hose
Size: 50ft, Color: Black
I love this hose, I have one from years ago wearing out. This is a different quality, so will last longer. It is very lightweight when it detracts and easy to put away in the hose bowl. I also like the fact it came with a nice nozzle.
Will purchase another one that is longer after my green house is built.
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Reviewed in the United States on May 16, 2026
★★★★★ 4
Easy to use for older folks - and FUN.....???
Size: 100ft, Color: Black
Love the light weight. I can turn the spigot just a bit and the hose will grow in length as i walk around to the front of my house. It's just enough to get a good drenching without knocking my plants around. However, the nylon covering snags easily, and I can see that I may need to replace the hose quicker than I had hoped. I'll probably get the same brand of i have to do so. The sprayer is decent quality, and its multi-functions are handy. I kind of like watching it shrink as I empty it and wrap it up. Never thought a garden hose would actually add a little fun to the chore!
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Nice, light hose with nozzle
Size: 25ft, Color: Black
Nice short expandable hose. I had a longer expandable one which got a big leak. So I bought this shorter one since I only use it to water the plants on the patio. So far, it works great; but people have to know that short means short. The nozzle fits this hose; my other nozzle is too big. So having the short hose and the right nozzle in one package works for me.
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Reviewed in the United States on June 7, 2026