The JFS Advantage - and why we are by far the BEST choice!!

Some of our biggest vendors at JFS!!

Choice of Vendor, Technology, Price Point, ...............

We offer the widest variety of Broadcast Fiber Vendors and Equipment of any distributor or reseller in the USA! This unique position gives us the ability to offer you multiple solutions and to work with you to find the best solution for your specific need and budget.


Because we deal with so many vendors we are always on the cutting edge of technology, more often than not knowing what's being developed or released before anyone else. We also share in the actual fiels experience of our customers, giving us the knowledge and experience needed to back our recomendations no matter what!

We do carry in stock some of the best selling items, ensuring quick delivery if you need it fast. In addition if a customer comes and buys new technology from us, we typically order an extra unit for stock - just in case backup is required.

From the simplest point to point module to more complex Camera or MADI solutions, we have a wide variety of inventory on hand. We also have exceptional relationships with our vendors, so if you need it quick chances are we can help! We can also expedite anything door to door inclusive of all duties, taxes and customs issues.

Need it Expedited, together with S.O.S. Global we will get it where you need it and when you need it!

FEATURED: The new Live-Link Junior!

The Live-Link Jr. Camera End by Studio Technologies

Live-Link Jr. is a highly-integrated camera extender system optimized for electronic news gathering (ENG), uplink truck, and specialized broadcast applications. The portable camera end unit and rack-mounted truck end unit provide all the resources needed for a single-camera live event. Linked using just two single-mode optical fibers, the same excellent performance will be supplied whether the units are hundreds of feet or miles apart. Notable features of the Live-Link Jr. system include performance flexibility, support for high-quality on-air (program), talent cue (IFB) and intercom audio, and ease of use.

Live-Link Jr. Key Features

  • SD/HD/3G-SDI support
  • All audio transported embedded into SDI paths
  • Integrated party-line and 4-wire intercom support
  • Excellent audio quality throughout
  • Full SMPTE®-standards compatibility
  • Standard optical, video, and audio connectors
  • Hybrid fiber/copper powering of camera end unit
  • AC and DC powering of truck end unit
Rear View of the Live-Link Junior Base Station End

What we like: Intercom

A major strength of Live-Link Jr. is its integrated 2-channel intercom system. With its extensive resources and capabilities the typical hassles and limitations associated with intercom system implementation should be a thing of the past. A 2-channel party-line intercom interface is provided on both the camera end and truck end units. This allows user beltpacks, such as the ubiquitous RTS® BP325, to be directly connected and powered. A fully functional camera-end-to-truck-end "comms" system can be up and running in just minutes. The advanced 2-wire-to-4-wire converter circuitry provides simply excellent audio performance. Adjustment of the converter’s "nulling" is user activated by pushbutton switches on both the camera end and truck end units. The pushbuttons allow both the local and alternate-end nulling process to be started.


The Live-Link Jr. truck end also provides a 4-wire interface that is associated with intercom channel 2. An audio input and audio output allows direct interfacing with local and remotely-located matrix intercom systems. In this manner intercom users at the camera end unit, truck end unit, and remote locations can be part of the same intercom circuit. The party-line interface on the camera end unit provides a power source and the required signal terminations. This allows direct connection of user beltpacks; a typical application could use up to three BP325 units. With its selectable operating mode the truck end party-line interface offers additional resources. Most applications will have the truck end configured for stand-alone operation where power and signal terminations are required. In this mode up to three BP325 beltpacks could be connected. Alternately, the truck end’s power source and signal terminations can be disabled allowing interfacing with an existing party-line intercom system. This will allow the truck end’s party-line interface to become just another "user" on an already installed system.

The Live-Link Junior Base Station

And what really impressed us - Signal Embedding and Continuous Operation

All Live-Link Jr. audio and support signals are transported between units as embedded SDI data. This data is combined with the data already present on the connected SDI input signals. The support signals, such as serial data and GPI/GPO, are embedded as ancillary data. Four Live-Link Jr.-associated audio signals are transported in each direction, each as one group of standard embedded SDI audio data. The two mic/line inputs and two intercom audio channels are sent from the camera end unit to the truck end unit. The two line/IFB inputs and two intercom audio channels are sent from the truck end unit to the camera end unit. By default the Live-Link Jr. audio is embedded on group 2, with any audio on groups 1, 3, and 4 being passed through from the SDI input on either end to the SDI output on the other. A configuration setting allows this group to be changed from 2 to 3. This audio transport design was carefully implemented so that audio embedded by an external device, such as a camera, will be passed through Live-Link Jr. Audio associated with Live-Link Jr. is embedded into the SDI signal along with the externally-embedded audio. The resulting SDI signal can be a valuable resource, for example when connected to the input of a video router.

Should an external source of SDI not be provided to the camera end or truck end units' SDI input, internal SDI clock and video signal generators will become active. This ensures that an SDI signal will always be present, and audio and support signal transport will be maintained. The internally-generated SDI video signal can be selected from among two choices. The default provides a unique solid color that slowly changes over the SDI video data palette. This ensures that connected equipment, and associated users, will be able to recognize that the signal is active. An alternate setting allows color bars to be generated.

Optical Transport

The camera end and truck end units interconnect using two strands of single-mode optical fiber. Only a single optical wavelength per fiber is required since all video, audio, serial data, GPI/GPO, and support signals are transported as part of the SDI data stream. Two ST optical connectors are provided on the back panel of the truck end unit. The camera end unit can be ordered from either of two optical connectors. The standard configuration uses a Neutrik® opticalCON DUO® which provides two fiber and four copper connections. This advanced connector offers a number of advantages for Live-Link Jr. users including fast, reliable mating and un-mating, fiber protection, and the option of providing power to the camera end unit. The camera end unit can also be ordered with two ST optical connectors. This can prove beneficial for applications that need to utilize an existing inventory of fiber optic cable that is terminated with low-cost, more-generic ST connectors. This typically would be available at facilities such as sports stadiums or convention centers where "house fiber" is offered. It's also common for mobile broadcast and field-production applications to bring tactical-grade TAC-4 or TAC-12 multi-strand fiber assemblies where ST connectors are present.

The Live-Link Junior
More details on this great value from Studio Technologies!
JFS ds_lljr_p1.pdf
Adobe Acrobat document [793.9 KB]