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ViaLite RF over fiber links are commonly used in Broadcast-Satcom for the backhauling of outside broadcast content (such as news, live event and sporting coverage) to the studio. This content is typically sent from production trucks in Satcom on the Move (SOTM) operations, or from regional news studios via satellite. It is then received at the main broadcast studio for editing and production before being distributed, by uplink, to the viewers and other stations.
RF over fiber links can be used to connect studios to antenna farms, or on the roofs of tall broadcast buildings (e.g. in metropolitan areas). They are also commonly used for remoting to other locations, such as outside of metropolitan areas, for a better satellite view or low-rental roof costs. Long distance links can be used to connect facilities hundreds of kilometers apart.
ViaLite‘s links can be operated in both the transmit or receive paths, and are typically intermediate frequency (IF) L-Band HTS, 70-140 MHz and 10 MHz reference links. We offer 75 and 50 ohm products. 1:1 redundancy ensures links are always available.
The link process converts the RF electrical signal to laser light which then travels down the fiber to the receiver. It is then converted back to an RF electrical signal; connecting the satellite dish to the Master Control Room (MCR).
The receive chain (downlink)
This typically has an LNB or an LNA coupled to a down convertor to take the satellite signal from C, Ku or Ka-band down to the IF frequency (either 70/140MHz or L-Band HTS). The signal can be in DVB-S or DVBS2 (for HD) format as the links are protocol transparent. It is then transported across the fiber to the control room where it is changed back to RF signal and sent to a traditional RF switch matrix or straight to a demodulator.
The uplink chain
Typically the signal comes from the modulator in an IF (L-Band HTS or 70/140MHz) and is then converted to light to go across the site to an Up-convertor or a BUC which takes the L-band signal and converts, or converts and amplifies the signal before transmission to the satellite at C, Ku or Ka-Band.
Typical applications
- Broadcast facilities
- Mobile SNG and flyaways
- Television receive-only (TVRO)
- VSAT hubs (IP gateways)
Products
L-Band HTS 700-2450 MHz
The L-Band HTS link (700-2450 MHz) covers distances of 1m to 50 km and is the most commonly used RF over fiber link in Satellite Communications…
Blue2 Link 2 kHz-4.2 GHz
ViaLite‘s RF over fiber Blue2 Link is a dual-solution OEM which can be setup as 2x transmitters, 2x receivers or a transceiver, as required.
6 GHz Link
The ViaLiteHD 6 GHz Link covers 10 MHz to 6 GHz, providing tri-band coverage of L-Band (700-2450 MHz), S-Band (2200-2400 MHz) and C-Band (3.4 – 7.1 GHz).
Connection Kits
ViaLite offers four different Connection Kits for Blue OEM Links and Blue2 Links. These kits can be used to easily integrate ViaLite links with customer equipment.
Rack Chassis
The ViaLiteHD 3U Chassis can hold up to 13 RF dual cards (up to 26 links) plus a Monitoring & Control Module and two power supplies. The chassis design…
ViaLite Quad LNB Package
The Quad LNB Package is typically used by the Government (for receive-only applications), by the Satcom and Telemetry markets, or...
Outdoor Enclosures: ODE-D range and DIN Rail Mounting Kit
The ODE-D and ODE-D+ outdoor enclosures are large, free standing outdoor enclosures with 25U of rack space. The units can…
Outdoor Enclosures: ODE-B3U
The new ViaLiteHD ODE-B3U houses and supports a 3U chassis that can tilt forwards for easy installation and maintenance. Also…
Outdoor Enclosures: ODE-A4 range
ViaLite has launched a new ODE-A4 range of outdoor enclosures: ODE-A4 GPS, ODE-A4 VSAT, ODE-A4 Quad LNB, ODE-A4 configurable. The…
Outdoor Enclosures: ODE-MINI
The ODE-MINI is a compact and versatile outdoor enclosure with a good deal of features for its size. It can house one or two Blue OEM Links, which can be…
Satellite IF 70/140 MHz
ViaLite’s Satellite Intermediary Frequency (IF) RF over fiber links cover the 20-200 MHz bandwidth range; providing cross-site connectivity…
Long Distance DWDM Link System
The ViaLiteHD Long Distance DWDM Link System (L-Band HTS 700-2450 MHz) is designed to connect distances up to and over 100km.
Rain Fade Diversity Link System
Many of the new High Throughput Satellites (HTS) operate at Ka-Band which is very susceptible to weather conditions. ViaLite‘s Rain Fade…
Erbium-Doped Fiber Amplifiers (EDFA)
The ViaLiteHD Eribium Doped Fiber Amplifier (EDFA) is available in a single or multi-channel format depending on where it is utilized in the system.
Optical Switch
The Optical Switch has been designed for fast switching between local and remote locations in Ka-Band satcom diverse antenna applications.
19” Rack Optical Delay Line
The Optical Delay Line is offered as part of a DWDM L-Band diversity antenna system and is utilized when time-balancing between sites is required.
Dispersion Compensation Module (DCM)
A DCM/Dispersion Compensation Fiber (DCF) provides fixed chromatic dispersion compensation for diverse and disaster recovery DWDM networks.
L-Band HTS & Reference
The L-Band HTS and Reference link is designed for applications where remote equipment shares a common frequency reference (typically 10 MHz) however…
Satcom Timing & Reference
The Satcom Timing and Reference link is designed to be used when a central timing or modem-produced reference signal of 1 to 50 MHz (typically 10 MHz)…
Unbeatable signal strength connecting your live remote broadcast content via satellite with the studio, even from hundreds of km away.
L-Band 10 MHz Diplexer
The new ViaLiteHD L-Band 10 MHz RF Diplexer has been designed to distribute a single 10 MHz reference frequency to all L-Band paths on the unit. With low…
Passive RF & Optical Cards
A range of carrier cards for passive RF and/or optical devices. Offering expanded capabilities and simple, streamlined integration in rack-mounted applications.
Wideband 10 MHz-3 GHz
The Wideband link has a 10 MHz-3 GHz bandwidth. It can be used to connect satellite antennas with control rooms, network operation centers or broadcast…
Ultra Wideband 2 kHz-4.2 GHz
ViaLite‘s Ultra Wideband link provides 2 kHz-4.2 GHz bandwidth, which is ideal for C-band downlink and S-band for Telemetry, Tracking and Command…
GPS Link
The GPS fiber optic link allows for timing distribution and accurate synchronization using GPS-derived timing signals. The links are a reliable method…
ViaLite GPS Packages
The GPS Package is designed for bringing GPS/GNSS signals into buildings for time servers, base stations, test equipment or rebroadcasting.
Local Integrated GPS Splitter
The ViaLiteHD GPS Splitter is designed to minimize rack space. The chassis is available with 1-4 RF over fiber receivers with 8-32 outputs, depending…
Multizone Lossless Splitter
The Multizone Distribution Lossless Splitter allows for multiple receive points to be supplied by one transmitter with zero optical loss.
Monitoring & Control Modules
The ViaLite ‘Horizons’ Monitoring and Control (M&C) modules can be used to fully manage ViaLiteHD RF over fiber systems. The HRC-3 Horizons option…
1:1 Redundancy
ViaLite fiber optic links can be configured into dual redundancy (1:1) systems to ensure maximum up-time. 1:1 is achieved by configuring the system …
WDM, CWDM & DWDM Multiplexers
The ViaLite range of WDM, CWDM and DWDM products allow multiple channels – travelling in either direction – to…