Large-diaphragm stereo condenser microphone
MC48: The MC48 is a large, dual-diaphragm stereo condenser microphone with transformer-less class A electronics. It is well suited for applications in radio broadcasting as well as for live concerts and studio sound production. The microphone has low self-noise of less than 12dBA, and sound pressure level of 135dB. The two large 25mm diaphragms, placed one above the other, can be simultaneously rotated to provide variable stereo width from 50 degrees up to a maximum of 140 degrees and are capable of advanced, adjustable cardioids functions in mono mode. The ultra-thin and gold-coated diaphragms are made of 3-micron polyethylene-terephtalate film. All capsule components have passed a special artificial aging process to guarantee long-term stability. The internal construction is elastically mounted to attenuate vibrations and reduce handling noise. Additionally, the capsules are fixed on special dampers. A small LED indicates the presence of 48V phantom power and confirms front position. All input transistors pass a special selection process to guarantee minimal self-noise.
EAS watch on-site monitor
Cascade Technology Corporation
OSM: This on-site station monitor, is a 2RU device designed to monitor on-site received and broadcast EAS alerts. When the unit detects an EAS alert, the full FSK text are captured along with any voice audio and sent to the server for analysis via an Ethernet connection to the Internet. The base unit accepts the digital output from a standard EAS encoder/decoder. The OSM is also intended to monitor the on-air audio in order to confirm the actual broadcast of an EAS alert. The modular design allows for monitoring up to five signal sources per unit. Expansion cards allow monitoring of on-air signals from an external antenna or via direct audio input from existing monitor receivers. Because the OSM continuously monitors preset stations, it can detect spurious alerts and determine on/off air status, relaying this information to the server.
70000 Series: Dielectric's 70000 Series coaxial switch is a compact unit that provides fast and reliable switching of power between runs of transmission line. The unit is motor-driven with a manual override and LED position indicator. The switch may be operated locally or via remote control. It is available in both 115 Vac and 230Vac with 12-24Vdc control inputs. This enhanced version of the 60000 Series coaxial switch features return position accuracy of +/-1 degree angular rotor accuracy using more accurate proximity switches versus conventional micro-switches. The 70000 Series switches offer segregated power and control input connectors.
MR Series: The MR Series features a baffle molded to minimize diffraction and a precision waveguide to ensure broad, even dispersion and a smooth transition between highs and lows for a clear image of your mix and an ultra-wide, even sweet spot. The amplifiers feature a Class A/B architecture that delivers a flat frequency response, plus the addition of acoustic controls to adjust high frequency and low frequency settings to compensate for room placement. The MR5 features a 5.25-inch low distortion LF woofer and a 1-inch high-resolution HF tweeter coupled with a high-headroom 55/30W Class A/B bi-amp. The MR8 has an 8-inch steel frame low distortion LF woofer and a 1-inch high-resolution HF tweeter coupled with a high-headroom 100/50W Class A/B bi-amp
Bird Technologies Group
Signal Hawk VNA: The Signal Hawk VNA Spectrum Analyzer handles installation, troubleshooting and maintenance of wireless communications systems. It provides precise measurements of a variety of RF readings in a field-friendly package. To get communication systems up and running quickly or to perform preventative maintenance, the instrument allows even novices to easily carry out spectral monitoring and interference analysis, as well as make one-port cable insertion loss measurements and the highest resolution determination of distance-to-fault. In addition, it's been drop/splash tested to military specifications and has a large color in/outdoor display with an intuitive user interface.
Acceptable Use Policy blog comments powered by Disqus
[an error occurred while processing this directive]
Today in Radio History
The history of radio broadcasting extends beyond the work of a few famous inventors.
EAS Information More on EAS
The feed provides feeds for all US states and territories.
Need a calendar for your computer desktop? Use one of ours.
Information from manufacturers and associations about industry news, products, technology and business announcements.
This high-visibility and high-traffic area got the full acoustic treatment.
Browse Back Issues[an error occurred while processing this directive]
Also in the May Issue
- Remote Access and Site Connectivity: Wireless
- Standards of FM Allocation and Interference
- Side by Side: Mic Processors
- Field Report: Deva Broadcast DB4004
- Field Report: APT WorldCast Systems Horizon NextGen
- New Products
- 20 Years of Radio magazine: May 1994