Weekly Tech Reminders: Repack, SFN & More

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

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.


Did you know that the FCC website has a neat page with a number of conversion charts? It has technical conversions, ARSN search, HTML color generator plus links to other often needed information.

Check it out here.


Television stations around the country are busy preparing for the repack.� This includes specifying equipment needs, budgets, placing orders and working on work schedules.

Alabama has over 20 stations that will be involved over the next few years.� We have put together a database including the channel changes and FCC Phase schedule.� If you see any errors or additions please let us know so we can keep the database up to date.


As a broadcast engineer whether in radio or television you are (or should be) very much involved in creating quality audio.

Let's be honest, we all want our production to attract the ears of our listeners in a positive way, and a big part of that is making the playback exciting and proud.� The most common mistake we see is people overloading either their individual tracks, or their master channel in their digital audio workstation.

In the digital world we have a level ceiling, and once a sound exceeds that volume level it distorts. While we get the signal louder by turning it up, up, and up, we also lose punch and create a tonal quality that is usually worse than what we started with.

Also professional sound engineers stress the most important item is to "train your ears".

This is accomplished by listening to a lot of quality music of different genres. Pay attention to how the composer and mix engineer created a place for all the sounds to sit without interfering with each other.� This same philology applies in the production room of your broadcast operation.� Before transferring the completed file to the playout server, listen intently to the entire file, making sure that all the elements have a place to sit without covering up the other elements... especially the voice.

Let's make an effort to bring quality (not quantity) back to our broadcast product!


A single-frequency network or SFN is a broadcast network where several transmitters simultaneously send the same signal over the same frequency channel. A Single Frequency Network is a means to extend the coverage area without the use of additional frequencies.

This is particularly interesting for broadcasting. Both T-DAB (digital radio via terrestrial transmitters) and DVB-T (digital television via terrestrial transmitters) have the possibility for a single frequency network.�

Read more here.