Weekly Tech Reminders: Time Change, Digital Audio Interface and Repack

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An excerpt from this week’s Monday Morning Coffee and Technical Notes

The following is from the Alabama Broadcasters Association’s weekly e-newsletter, Monday Morning Coffee and Technical Notes. Thanks to ABA’s Larry Wilkins. To subscribe to the newsletter, email lwilkins@al-ba.com.

 

TIME CHANGE

Engineers should highlight Nov. 5 on their calendars. No it is not another national EAS test, rather that date is when clocks will change from Daylight Saving Time to Local Standard Time.

Sunrise and sunset will be about one hour earlier on Nov 5 than the day before. Remote control units, especially those used to change power levels or patterns for AM stations should be checked to verify correct switching time. The FCC is not very fond of stations operating with daytime levels at night.

 

DIGITAL AUDIO INTERFACE UNITS

As more stations move from analog to digital audio, especially in the production room, engineers are reminded that most important device is the audio interface. A typical audio interface converts analog signals into the digital audio information that your computer can process. It sends that digital audio to your computer via some kind of connection (e.g. Thunderbolt, USB, FireWire, or a special PCI/PCIe card).

Any deficiencies here will create problems that cannot be corrected downstream. A digital interface should have a high quality microphone preamp, stable Analog to Digital converter and use a sample rate of at least 48 kHz with 24 bit depth.

 

FM STATIONS AFFECTED BY TELEVISION REPACK

FM radio stations should be aware that your stations can be effected by the television repack. If you have a antenna located on a television tower, more than likely your station will have to reduce power or shut down while construction work is being performed on the transmission system for the television station.

We urge you, if not already, contact the engineering department of the television station to work out schedules and other details.

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