FlexDSR04+ Satellite IRD


Flexible professional 4 channel DVB-S/S2 satellite audio receiver/IRD

FlexDSR04+ - professional 1-4 channel DVB-S/S2 satellite audio receiver/IRD - frontFlexDSR04+ - professional 1-4 channel DVB-S/S2 satellite audio receiver/IRD - rear

While being an unsurpassed satellite receiver, it is also a full-blown Audio over IP device, allowing to receive transport streams or elementary audio streams via IP with Pro-MPEG FEC and DualStreaming protection against IP packet losses. This enables you to use the FlexDSR04+ in mixed environments, switching to IP distribution when the necessary IP infrastructure becomes available or as a backup solution.

The FlexDSR04+ does support all widespread audio codecs (MPEG 1 Layer 2, MP3, AAC LC, HE-AACv1 and HE-AACv2), but also Enhanced aptX®, which delivers audio quality indistinguishable from the uncompressed audio  at much reduced bit rates. If bandwidth is not a problem (maybe because you switched to IP), the audio might also be uncompressed PCM at 48kHz/24bit. So depending on the available bandwidth the FlexDSR04+ will offer a wide range of supported audio qualities.

Additionally to its core functionalities the FlexDSR04+ comes with several features that made this product one-of-a-kind.

  • Insertion of local jingles or advertisement with configurable cross fading and relay switching
  • Monitoring of IP, SAT and MPEG parameters via SNMPv2c and relay
  • Adjustable Silence Detection
  • Sophisticated alarm concept including: IP Buffer and Jitter check / PLL
  • 4 seconds until audio is available after the device is powered on thanks to a DSP based 24/7 architecture


Transportstream inputs

  • DVB-S/S2 256 kSym/s…45 MSym/s single and multiple channel per carrier
  • DVB-S/S2 Tuner module 16 APSK (128/64 kSym/s – 45 MSym/S) (optional)
  • ASI (optional)
  • Gigabit IP (optional)

Local Ad(vertisement)/commercials/regionalized audio content

  • Provision of local ads and regionalized radio content network wide
  • Existing 2wcom Systems transport and scheduling system called Satellite In-Band Remote Control (SIRC)
  • Flexible interface to existing automation system
  • Flexible regionalization server and receiver concept
  • Full featured Satellite Receivers with regionalization possibility (integrated memory)


  • Transport stream over IP
  • Transport stream over ASI
  • RTP elementary stream over IP (optional)
  • Optional: IP-audio streaming (Icecast/Shoutcast) input as backup solution
  • Optional: Enhanced integrated memory as additional backup
  • Intelligent, automatic switching between backup sources in case of failure

Audio output

  • 4 balanced analogue or digital AES/EBU (XLR connector) audio outputs

Data output (e.g. RDS, DRM)

  • Serial, Ethernet
  • (on request) X.21 interface
  • 4 or optional 8 serial RS232 outputs
  • 12 or optional 24 relays
  • Optional: High Speed IP Data (MPE)

Transport stream output

  • ASI
  • Gigabit IP


  • Audio decoding (professional MPEG decoder: MPEG 1/2 Layer 1, 2, 3 (optional: MPEG 2/4 AAC LC, HEv1&v2 and aptX)
  • RDS decoding (built in RDS/UECP decoder)


  • prepared for multiple users/customers on one physical device
  • Via web interface
  • Optional: Satellite In-Band Remote Control (SIRC)
    (e.g. relay switching, regional advertising)
  • SNMP v2c


  • RF and MPEG parameters via SNMP v2c and relay
  • Monitoring of up to eight audio programs via IP

Sync FM

  • Prepared for synchronized FM transmission within FM SFN Networks
Datasheet for FlexDSR04+ 4-ch SatReceiver