Connection options

Our next step up the ladder leads to models with more inputs and outputs and connect to a greater variety of transmission modes. Such units are capable of transmitting mono, stereo or dual mono audio over POTS, DSL, cable, Wi-Fi, 3G cellular or satellite IP delivery services. For events of longer duration, internal power sources have improved for longevity of use through the implementation of lithium-ion battery technology. Connectivity and setup, even for the nontechnical person, has become increasingly quick and easy. Onboard LCD menu-driven displays make for straightforward selection of multiple transmission algorithm bit rates.

The proliferation of IP-capable codecs has simplified connecting audio from the field. At the 2010 NAB Show, wireless portable connectivity reached a new level of popularity and cost-effectiveness with devices and software for use with smart phones. Comrex showed ARC for Droid, and Tieline displayed Report-IT Live for the iPhone. Both provide a quality connection from the field for simpler remotes.

Telos VX VoIP phone system

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VoIP has come to the air studio. At the 2010 NAB Show, Telos unveiled the VX VoIP system. Gateway connections can be via T1/E1, ISDN and POTS or to a VoIP-based PBX or SIP-trunking telco service. With this unit, which is scalable for use in a few studios or dozens and capable of managing up to 80 lines, multiple calls can be conferenced and aired simultaneously.

JK Audio BluePack

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In complete contrast to the high-capacity VoIP system, JK Audio's BluePack belt pack unit provides for "man-on-the street" interviews through a cell phone equipped with Bluetooth wireless technology. The unit includes a microphone preamplifier, headphone amp and a stereo line input jack for connection of an external audio source. The BluePack pairs to a Bluetooth-equipped cell phone in the same manner as that of a Bluetooth earpiece.

Telephone-based communications have become a mainstay in broadcasting with their range of applications becoming increasingly varied. Whether using hard copper phone line, a handheld mobile device or satellite-delivered IP audio, the creative broadcast engineer is sure to find a telephone interface that meets the station's technical requirements.

Bartlebaugh is director of broadcast engineering, WKSU-FM/Kent State University.

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