The radio frequency / Brady's helmet mic came from the following articles:
http://nypost.com/2014/10/12/they-are-cheaters-spygate-the-nfl-scandal-that-started-it-all/
http://sports.espn.go.com/nfl/columns/story?columnist=sando_mike&id=3035449
[em]Quarterbacks communicate with the sidelines via microphones in their helmets that pick up an NFL-monitored radio frequency. An NFL sideline official cuts off communications on this frequency 15 seconds before the play clock runs out.
Offensive plays would be called based on stolen signals and the information relayed straight to Brady’s helmet, O’Leary theorizes.
In this scenario, the extra frequency is critical, as it allows the team to do something in real time with the stolen signals, out of earshot of the NFL monitor, and change its plays accordingly.
If there’s an open channel during the play itself, you can also alert the quarterback to open receivers he may not see.
O’Leary repeats a rumor that Pats backup quarterback Doug Flutie once said he accidentally picked up Brady’s helmet during the 2005 season.
“He was amazed that the coaches kept right on speaking to Brady past the 15-second cutoff, right up until the snap,” according to O’Leary.
“The voice in Tom Brady’s helmet was explaining the exact defense he was about to face.”
[/em]
The radio frequency / Brady's helmet mic came from the following articles:
http://nypost.com/2014/10/12/they-are-cheaters-spygate-the-nfl-scandal-that-started-it-all/
http://sports.espn.go.com/nfl/columns/story?columnist=sando_mike&id=3035449
[em]Quarterbacks communicate with the sidelines via microphones in their helmets that pick up an NFL-monitored radio frequency. An NFL sideline official cuts off communications on this frequency 15 seconds before the play clock runs out.
Offensive plays would be called based on stolen signals and the information relayed straight to Brady’s helmet, O’Leary theorizes.
In this scenario, the extra frequency is critical, as it allows the team to do something in real time with the stolen signals, out of earshot of the NFL monitor, and change its plays accordingly.
If there’s an open channel during the play itself, you can also alert the quarterback to open receivers he may not see.
O’Leary repeats a rumor that Pats backup quarterback Doug Flutie once said he accidentally picked up Brady’s helmet during the 2005 season.
“He was amazed that the coaches kept right on speaking to Brady past the 15-second cutoff, right up until the snap,” according to O’Leary.
“The voice in Tom Brady’s helmet was explaining the exact defense he was about to face.”
[/em]

The radio frequency / Brady's helmet mic came from the following articles:
http://nypost.com/2014/10/12/they-are-cheaters-spygate-the-nfl-scandal-that-started-it-all/
http://sports.espn.go.com/nfl/columns/story?columnist=sando_mike&id=3035449
[em]Quarterbacks communicate with the sidelines via microphones in their helmets that pick up an NFL-monitored radio frequency. An NFL sideline official cuts off communications on this frequency 15 seconds before the play clock runs out.
Offensive plays would be called based on stolen signals and the information relayed straight to Brady’s helmet, O’Leary theorizes.
In this scenario, the extra frequency is critical, as it allows the team to do something in real time with the stolen signals, out of earshot of the NFL monitor, and change its plays accordingly.
If there’s an open channel during the play itself, you can also alert the quarterback to open receivers he may not see.
O’Leary repeats a rumor that Pats backup quarterback Doug Flutie once said he accidentally picked up Brady’s helmet during the 2005 season.
“He was amazed that the coaches kept right on speaking to Brady past the 15-second cutoff, right up until the snap,” according to O’Leary.
“The voice in Tom Brady’s helmet was explaining the exact defense he was about to face.”
[/em]