Radio Free Asia's D.C. Digs

IP-Audio, VoIP and International broadcasting

Radio Free Asia (RFA) was an early adopter of Axia technology. Starting in 2005 with its Asia bureau facility located in Bangkok, and then later in Seoul and Hong Kong, RFA has essentially become an All-Axia house, eventually completing the upgrade with its Washington, DC headquarters, which has 35 studios.

Railroading and Audio Processing

Think these two topics don't have anything in common? It's amazing how many broadcast engineers are model railroaders, too!

IP Radio for STL: Saves Hassles, Saves Money

The Joy FM puts 22 Z/IP ONE codecs in STL service

For The Joy FM, a contemporary christian radio station in Florida, with satellite stations throughout the state, things had reached the breaking point. They had been using C-band satellite feeds to distribute the signal, leading to a number of bottlenecks and inefficiencies. "All of our automation computers were at the transmitter sites, which are inhospitable environments," according to contract engineer Dave Anderson. "When the computers inevitably failed, our IT guy had to drive out to the sites." Clearly, it was time for a change. "We started looking for a replacement," adds Anderson. "but nothing had a price point that made sense for us." Enter the Telos Z/IP One.

Multipath? SSBSC technology may be your solution

Recently, we were privileged to receive some interesting on-air results about our proposed alternative method of using SSBSC (Single Sideband Suppressed Carrier) as the transmission method for FM-Stereo broadcasting. The intention here is to see if SSBSC will reduce the effects of multipath within the coverage area of the broadcast signal. Our proposed method is fully compatible with existing radio receivers.

Have a Blast in Vegas

Those of us who make the annual trek to Sin City for the NAB show every April have likely done all the tourist-y stuff. We've already shaken off the Gulch's glitter, experienced the World's Most Constant Traffic Jam (a/k/a The Strip) and seen enough white tigers to fill a small zoo.

Line Ringing tallies for Telos Hybrids

Greg Walker of Bristol Broadasting's WKYQ-FM in Paducah, Kentucky, writes: "I just purchased an Hx1 and was wondering if you could suggest a circuit for ringing and on air indicators."

Configuring GPIO events with the Axia iQ

Rod Simon, Studio Engineer at Moody Radio in Chicago e-mails us asking, "Is there a way to turn on a light when any of the faders or audio output of the IQ is active? Since we currently are not using the recording function I thought I may use that, but it is still not automatic. I basically want a virtual GPIO mixer controlling one GPIO port."

Behind the Doors of an EM Testing lab

Inside the EM Testing Laboratory at Riga Technical University

As everyone knows, broadcast equipment is subject to stringent electrical immunity and electromagnetic compatibility regulations. After all, you can't have EM flying willy-nilly around a radio or TV studio without causing adverse effects - either to the broadcast material, or to its human producers! International standards for EM (or RF, if you prefer) emissions are set by the IEC, and must be strictly adhered to. And although it goes without saying that manufacturers must test all equipment they produce to ensure that its EM emissions are within those standards, most folks have no idea of how this is done.

AM Low-Pass Filtering with Omnia-5AM

Lewis Downey of KUER, University of Utah, writes: "I take care of an AM that uses the Omnia 5. I want to roll off the audio to be processed to about 6 KHz. It is silly to try forcing anything above that through AM radios these days. I don't see an LPF filter option in the processor. Does one exist? At another AM site I built my own filter with op-amps and it hasn't hurt the perceived fidelity one bit and I think it makes the perceived modulation a bit louder because I'm not modulating with audio that isn't going to make it through the radios anyway."

Topics: broadcast audio processor

The Beauty of Uncommon Things

Those of you who might have studied film-making have likely heard of Ralph Steiner, an influential photographer and documentarian from the 1930s through the 1960s. His work was characterized by use of unusual angles and odd, but beautiful, subjects, some of which were mechanical devices and their workings. One of these is the subject of this month's Discrepancy Sheet: a 1930 short film titled "Mechanical Principles." In 10 minutes, Steiner captures the intelligence and beauty in the design of reciprocating parts, intermeshing gears, eccentric cams and other mechanisms designed to perform their tasks elegantly and repetitively. This short film is a fascinating look at the mechanical world in a pre-solid-state age - view it by clicking here. Some of Steiner's photographs are also on display at New York's Museum of Modern Art.

Telos Alliance has led the audio industry’s innovation in Broadcast Audio, Digital Mixing & Mastering, Audio Processors & Compression, Broadcast Mixing Consoles, Audio Interfaces, AoIP & VoIP for over three decades. The Telos Alliance family of products include Telos® Systems, Omnia® Audio, Axia® Audio, Linear Acoustic®, 25-Seven® Systems, Minnetonka™ Audio and Jünger Audio. Covering all ranges of Audio Applications for Radio & Television from Telos Infinity IP Intercom Systems, Jünger Audio AIXpressor Audio Processor, Omnia 11 Radio Processors, Axia Networked Quasar Broadcast Mixing Consoles and Linear Acoustic AMS Audio Quality Loudness Monitoring and 25-Seven TVC-15 Watermark Analyzer & Monitor. Telos Alliance offers audio solutions for any and every Radio, Television, Live Events, Podcast & Live Streaming Studio With Telos Alliance “Broadcast Without Limits.”