Radiant Comm Dual Encoder and QAM Modulator

The QRF5000 from Radiant Communications Corp is an MPEG-2 encoder with one video input and two audio inputs.  It will encode, and packetize incoming signals and then QAM modulate the MPEG transport stream where it is finally up-converted to RF for insertion into a local cable network.  The unique algorithm of compression and buffer control enables the QRF5000 to compress video and audio signals at user selectable bit-rates from 1.5 Mbps to 15 Mbps with excellent picture and sound quality. The QRF5000 is ideal for adding local video and audio feeds into a digital network. 

Video

• MPEG-2  MP@ML 
• H.263 baseline 
• Adaptive field/frame motion estimation and DCT type 
• Constant or variable bit rates from 1.5Mbps to 15Mbps 
• Horizontal sizes of 352, 480, 528, and 704 pixels 
• Vertical sizes of 240, 480 lines (NTSC) or 288, 576 lines (PAL)
  Studio-grade picture and sound quality 
• PCR re-stamping to minimize PCR jitter 
• Alterable PID numbers 

Audio

• 2- chanel consumer grade AC-3 
• Sampling frequencies: 32, 44.1, and 48 KHz.
• Two analog Audio input channels 

QAM/RF

• Supports 64 QAM and 256 QAM per ITU-J.83 Annex A, B, and C downstream standards
  Low phase noise for demanding 256 QAM transmission 
• High dynamic range with low noise and spurious levels 
• Supports world wide channel frequency plans (177-873 MHz) 
• RF output power > +60 dBmV RMS 

System

• Front panel controls or system adjustment and monitoring with 122x32 graphical display
  Network monitoring and management capability 
• Compact 1RU standard 19” rack mountable 
• Low power consumption