2008 NAB Extra! 

New Products at the 2008 NAB Show from APW, Audioarts Engineering, Avlex, Avocent, Axia Audio, Barix Technology, Broadcast Software International, Burk Technology, Dialight, Dielectric, DK Technologies, Enco Systems, Harris, Heil Sound, Hosa, JK Audio, Klotz Digital., LEA International/Transtector, Mayah Communications, Neutrik, Power Module Technology, Propagation Systems, RCS, RTW Radio-Technische Werkstatten, Samson Technologies, Sennheiser Electronic, Sonifex, Soundfield Research, Staco Energy Products, Stream Guys, Switchcraft, Tascam, Telos Systems, Vorsis, Wirecad, Yamaha and Zaxcom.

Convention time 

All attention turns to the NAB Show this time of year. It is the biggest industry event of the year after all. Even if you don't go or have never gone, it still has some relevance, since this is where the latest product developments and technology introductions specific to broadcasting are unveiled.

Forgotten modulation methods 

Early in the 1930s French engineer Henri Chireix devised an ingenious method of modulation that he named most appropriately out phasing. It was based on the result of combining two out-of-phase voltages. This produces a fluctuating signal voltage that varies in amplitude as the audio signals change. This voltage, after amplification, drives a power amplifier stage with properly amplitude-modulated RF.

Sign Off 

Old General Electric FM radio ads, staff photos from WTOA-FM and HD Radio's role in new automobiles.

Kowa PX-10 

Some devices have a front panel that demands attention. Such is the Kowa PX-10 flash memory audio player. This box simply belongs in the studio; but is the PX-10 more than just eye candy for the control room?

Radio broadcasting and 700MHz 

The FCC is auctioning what may be the most important spectrum allocations of our time. This portion of spectrum will be available as a result of the FCC mandate for traditional analog broadcast television to migrate to the new digital HDTV system by Feb. 17, 2009, specifically the portion previously occupied by channels 60-69.

Denon DN-C640 

The Denon DN-C640 is a true professional CD player and the network functionality adds to the experience. The response on playback is tremendous. It took less than a half-hour to have the unit up and running on the network and most configurations were done without using the manual. Intuitive design and user functionality make this CD player a useful tool in any broadcast facility.

Sign Off 

Hurricane Camille, KPO San Francisco and cell phone ownership.

Meet the professionals who write for Radio magazine 

In addition to his responsibilities at WJCU, Krieger is a contract engineer in Cleveland.

LPFM rules and proposals released 

The news is generally good if you are an LPFM licensee, but bad for FM licensees who plan to make facilities changes that threaten displacement of an existing LPFM station.

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Radio Currents Podcast, Jan 8

The SBE launches SBE University; The HD Radio Electronic Program Guide Project moves to phase two; HD Radio makes waves at CES; and Bradley sells to SCMS.

Radio Mag Online Podcast, Jan 2009

The Radio Mag Online podcast for January 2009. Hear from Radio magazine Editor Chriss Scherer with some insight to radio's future, and get the inside scoop on the Sandusky Radio Phoenix rebuild.

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The history of radio broadcasting extends beyond the work of a few famous inventors.

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