Field Report: FM Services TLM-1 

Here's a microprocessor-based system designed to monitor a tower's beacons, obstruction lamps, flash rate, photo control operation -- even the presence of an ATU heater bulb for winter months.

Transmission Line Pressure Monitoring 

Dehydrators and nitrogen are the common gas sources, but are you absolutely sure of the line pressure and supply pressure?

BW Broadcast Aptus 

FM transmitters

ERI-Electronics Research Inc 1329Line 

Aluminum outer coaxial transmission line

Harris Flexiva 

Air-cooled FM transmitter

Broadcast Electronics Portable Radio Systems 

Emergency radio transmission

Barix Extends Feature Set for Reflector Service 

Hosted by Barix partner StreamGuys, the application serves as an online center to configure and monitor the audio transport bridge while providing a relay of the audio feed.

V-Soft Communications XField 

Relocation software

Phasetek P600-206-WP 

Voltage sampling unit

ERI-Electronics Research 780/783 Series 

FM band pass filters

Method of Moment Proofs 

At the heart of the moment method proof is a computer model using an appropriate software package, however, the moment method proof, is not applicable in all cases or array designs.

Trends in Technology: Higher-power HD Radio 

Looking to add or upgrade IBOC? Here’s what you need to know.

Lightning Basics 

With all the mysticism stripped away, science clearly explains the causes and functioning of lightning. Ron Nott reviews the current best practices to mitigate lightning damage.

LED Obstruction Lighting Systems Give Back 

LED lighting is a cost-effective approach to obstruction lighting.

NAB Fastroad Investigates Transmitter Efficiency Ratings 

The NAB Fastroad project funded the report, which includes a proposal for industry-standard energy efficiency rating for transmitters.

Translators Today 

FM translator service, since its inception in the very early 1970s, has been subjected to several major technical overhauls.

L-com Global Connectivity ALW-CAT5HPJ, ALW-CAT5EJ, ALW-CAT6HPJ 

Lighting surge protectors

Calculating STL Fade Margin 

Understanding the mechanics of your RF program delivery system, and maintaining a keen grasp of the associated fade margin can go a long way to diagnosing the rare, but ultimately problematic impact path failure can have.

Antenna Trouble at the Empire State Building 

The master antenna system mounted on the Empire State Building suffered a major lower bay failure on Oct. 18, 2010.

Smith Chart Basics 

One good working definition of the Smith chart is that it is simply a graphical calculator for normalized impedance and associated RF parameters.

ERI-Electronics Research CS300 Series 

Broadband motorized switch

ERI-Electronics Research Precision Directional Couplers 

Fixed directional couplers

Radio Netherlands Worldwide Radio with Pictures 

Satellite radio images on TV

L-com Global Connectivity AL-D3W-05, AL-D3W-DT 

Lightning protectors

ERI-Electronics Research CD324-8DB 

8dB FM IBOC hybrid injector

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