Maintenance Shift

Measuring AM Modulation

Written by Alan Alsobrook Posted in Maintenance Shift, Monitoring.

The modulation depth of an AM station is more than a measurement of loudness. As has been known for many years, …

A Road Test of the Inovonics 531N for FM

Written by Richard Rudman Posted in Monitoring, Test Gear & Tools.

Given the expense of a mod monitor that is read infrequently, some stations have opted to use only the meter in …

Inovonics 525N AM Modulation Monitor

Written by Alan Alsobrook Posted in Monitoring, Test Gear & Tools.

The most basic, simple to use diagnostic tool for AM stations is the Modulation Monitor. Inovonics Model 525N displays the most …

Troubleshooting for Non-Techs – What to Do Before You Call the Engineer

Written by Barry Mishkind Posted in Monitoring, Studio Issues.

It is quite common for several stations to share one engineer, perhaps only on a contract basis. Even in some larger …

Modulation Monitors Aid Diversity Delay

Written by Mark Grant Posted in Monitoring.

This is the third in a series of articles that help show what we can learn from modulation monitors and how …

Modulation Monitoring and the RF Chain

Written by Mark Grant Posted in Monitoring.

At one time, modulation monitors displayed just enough to determine if a station met FCC Rules regarding modulation and signal to …

Analog FM Signal Measurements in an HD Radio Universe

Written by Mark Grant Posted in Monitoring.

Digital technology has brought about many changes in the broadcast industry, including how we monitor a station’s signal with our test …

An FM Mod Monitor is Not an Option!

Written by Jim Wood Posted in Monitoring.

Listening to a station on the car radio is not enough to know exactly what is happening. Proper test gear should …

Inovonics’ 610 Internet Radio Monitor

Written by Grace Gonzales Posted in Monitoring.

At first, stations just put their audio stream on the Internet to see if anyone would listen. Quality and levels were …

Know What Your Stream is Doing Inovonics’ 610 Internet Radio Monitor

Written by Grace Gonzales Posted in Monitoring.

At first, stations just put their audio stream on the Internet to see if anyone would listen. Quality and levels were …

Regular Frequency Measurements Can Save the Day

Written by Burt Weiner Posted in Monitoring.

A lot of what a broadcaster engineer does is often not spelled out specifically in the Rules. Many times it comes …

Fanfare Receivers Work Where Others Do Not

Written by Barry Mishkind Posted in Monitoring.

Just like a chef will taste food as it leaves the kitchen, most broadcasters are keenly interested in knowing how their …

Determining FMeXtra Injection

Written by Lyle Henry Posted in Monitoring, Transmitters.

Modern modulation, especially digital modulation, has in some ways outrun the capabilities of the traditional modulation monitors. This is especially true …

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Maintenance Shift