SMATV, satellite TV, cable TV
Central Satellite-TV for distribution systems SMATV (DVB-C, DVB-T) Headend, Modulator
BLANKOM DVB-C (QAM) headend units for central satellite TV distribution systems: transmodulators with 4, 8, 16 and 24 tuners. Distribution over coaxial and fiber optic cable; a model with CI slots for encrypted services.
- DVB-S/S2/S2X → DVB-C
- 4 · 8 · 16 · 24 tuners
- QAM
- CI · CAM
- Project quotations
- Selection support
Tell us the number of satellites and transponders, whether any channels are encrypted and the distribution network (coaxial, fiber, number of subscribers); we will suggest the matching headend. We ship worldwide from our warehouses in Germany and Turkey.

Which headend fits your project?
A DVB-C (QAM) headend converts DVB-S/S2 services received from satellite to DVB-C (transmodulation); the services are distributed in the building or estate over coaxial and fiber optic cable and watched with the built-in DVB-C tuner of the television sets.
| Requirement | Matching model |
|---|---|
| 4 satellite transponders | HDC-7004 |
| 8 transponders, encrypted channels with CAM modules | HDC-6008CI |
| 16 transponders, 16 QAM outputs | HDC-7016A |
| 24 transponders, 16 QAM outputs | HDC-7024A |
BLANKOM DVB-C transmodulators with DVB-S2 input
19-inch units with satellite tuner inputs and DVB-C QAM RF and IP outputs. Detailed specifications are on the product page linked from each model.
| Image | Model | Inputs | Outputs | Features | Quote |
|---|---|---|---|---|---|
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BLANKOM HDC-7004 DVB transmodulator with DVB-S2 input, 4 tuners |
4 DVB-S/S2/S2X tuner inputs (L, Ku, C band; DVB-C/T/T2/ISDB-T/ATSC-T optional). Up to 128 IP inputs (SPTS/MPTS) via GbE. TS playback from USB disk. | 4 adjacent DVB-C QAM RF outputs. 4 MPTS IP outputs over UDP/RTP. | Integrated multiplexer and DVB-CSA scrambler. MER ≥ 40 dB. | Request a quote |
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BLANKOM HDC-6008CI DVB transmodulator with DVB-S2 input, 8 tuners, 4 CI modules |
8 DVB-S/S2/S2X tuner inputs (L, Ku, C band; DVB-C/T/T2/ISDB-T/ATSC-T optional). 4 CI for CAM modules. Up to 128 IP inputs (SPTS/MPTS) via GbE. TS playback from USB disk. | 4 adjacent DVB-C QAM RF outputs. 4 MPTS IP outputs over UDP/RTP. | Integrated multiplexer and DVB-CSA scrambler. Built-in CI slots for encrypted channels. | Request a quote |
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BLANKOM HDC-7016A DVB transmodulator with DVB-S2 input, 16 tuners |
16 DVB-S/S2/S2X tuner inputs (L, Ku, C band; DVB-C/T/T2/ISDB-T/ATSC-T optional). 2 ASI inputs. Up to 128 IP inputs (SPTS/MPTS) via GbE. TS playback from USB disk. | 16 non-adjacent DVB-C QAM RF outputs. 16 MPTS IP outputs over UDP/RTP. 2 ASI outputs (2 TS as mirror). | 16 groups of multiplexing, 16 groups of scrambling (optional), 16 groups of QAM modulation. | Request a quote |
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BLANKOM HDC-7024A DVB transmodulator with DVB-S2 input, 24 tuners |
24 DVB-S/S2/S2X tuner inputs (L, Ku, C band; DVB-C/T/T2/ISDB-T/ATSC-T optional). 2 ASI inputs. Up to 128 IP inputs (SPTS/MPTS) via GbE. TS playback from USB disk. | 16 non-adjacent DVB-C QAM RF outputs. 16 MPTS IP outputs over UDP/RTP. 2 ASI outputs (2 TS as mirror). | 16 groups of multiplexing, 16 groups of scrambling (optional), 16 groups of QAM modulation. | Request a quote |
Modulators with HDMI, SDI and IP inputs
Modulators that turn local sources (HDMI, SDI) or IP streams into DVB-C and DVB-T are on a separate page: Modulators
Why BLANKOM?
- No set-top box needed. The services are watched with the built-in DVB-C tuner of the television sets.
- A graded series. From 4 to 24 tuners in a single 19-inch unit.
- Integrated multiplexer. Channels are arranged on the carriers as required.
- IP input and output. IP streams can be added to the system; MPTS IP output is provided.
Why PROTEL?
- Distributor. BLANKOM products and technical support directly from PROTEL.
- Complete system. Headend, encoder, IPTV server, set-top box and cabling come from the same supplier.
- Selection support. We work out the model with you from transponder count, encryption and destination.
- Worldwide supply. Shipped from our warehouses in Germany and Turkey.
Frequently asked questions about DVB-C headends
What does a transmodulator do?
It demodulates the DVB-S/S2 carrier from the satellite and remodulates its channels as a DVB-C (QAM) carrier, so that the services can be distributed on the cable network.
Can encrypted channels be distributed?
The HDC-6008CI has 4 CI slots for CAM modules. Distributing encrypted services requires authorisation from the broadcaster concerned.
What do adjacent and non-adjacent outputs mean?
With adjacent outputs the carriers sit on consecutive channels; with non-adjacent outputs the frequency of each carrier is chosen independently. The HDC-7004 and HDC-6008CI deliver 4 adjacent QAM outputs, the HDC-7016A and HDC-7024A 16 non-adjacent ones.
I do not know the model code. How do I get a quotation?
Send the number of transponders and channels, whether any services are encrypted and the destination of the streams; we will suggest the model.
Request a quote
- If you know the model: model code, quantity and delivery location are enough.
- If you do not: send the number of satellites and transponders, the number of channels, any encrypted services and the destination of the streams (LAN, internet).
- If you have a specification or project drawing: send it and we will work out the matching models.
Product names, images and technical information on this page are © BLANKOM, taken from information published by the manufacturer. Source: irenis-blankom.com


