question: Why do NFL coaches and personnel have headsets with cords?
comment: There is a lot of electrical noise in a stadium. A large stadium has 80,000 seats. That’s a lot of users who are competing for the 2.4GHz band that Bluetooth uses. Even if they use the UHF and VHF band they are still limited on channels. The support crew, television crew, security, vendors etc using wireless products are still competing for the available frequencies. It becomes a very congested electrical magnetic environment.
passages: Shortly before his death, Chase wrote to sports legend Don Cherry asking for help in highlighting the need for this lifesaving equipment. Soon after his death Don Cherry dedicated time to Chase's plight on Coach's Corner.
  
  Section::::The Chase McEachern Act.
   Portable devices have also become usable when worn. For example, most walkie talkies come with a voice operated transmit capability so that they will work hands-free, when used with a wearable microphone. Many telephones such as the Motorola Star Tac also feature an earpiece that allows the phone to be worn and used hands-free. The Star Tac was the first wearable cellular telephone, in the sense that it was the first that could be used while being worn.
   Headsets can have ergonomic benefits over traditional telephone handsets. They allow call center agents to maintain better posture without needing to hand-hold a handset or tilt their head sideways to cradle it.
  
  Section::::Health and safety.
  
  Section::::Health and safety.:Dangers and risks.
   NFL rules state that all helmets with a headset in them must have a visible green dot on the back. Since only the quarterback can have a wired helmet, it stops other players using the quarterback's helmet. A few times in 2006 the holder on the field goal attempt was told to pull up and throw or run at the last second because of a change the coaches saw on the field. This gave teams an "unfair advantage" in the eyes of the NFL. The new rules let each team know who is wearing a headset and who is hearing the plays being called.
   The NFL allowed dummy communication in regular-season games in 1994. Rather than coaches calling a time-out in order to give a play to a quarterback, many of today's teams are opting for radios inside their quarterback's helmet. The helmets are set up with a small speaker in each ear hole. Quarterback coaches or offensive coordinators on the sidelines talk to the quarterback with a radio, giving him specific plays and options. Players from the "old school" might argue that this creates an unfair advantage, but proponents say that the radio helmets make for clear coach-to-player communication, even in large, noisy games like the Super Bowl.
   Setcom began making portable radio headsets for firefighters in the 1970s just as it had created the police motorcycle communications kit. Though they started making the headsets early on, they didn’t fully step onto the fire communications scene until the late 80’s and early 90’s when they introduced their first intercom system built for fire apparatus, the System 900. Throughout the 90’s, Setcom released new versions of their intercom system, with upgrades for ease of use for the multitasking firefighters. 
   Two Ohio inventors devised a headset for Cleveland Browns coach Paul Brown so he could radio plays to his quarterback. It was banned shortly after its first use in 1956. The NFL approved use of headsets for all NFL teams in 1994.
   According to a press interview held with the Tampa Bay Buccaneers, the quality of the sound is good, but crowd noise factors in. “It’s about like what you’d hear over a loudspeaker,” said Bucs QB Shaun King. “It can be hard to hear when there’s a lot of noise on the outside, but it’s pretty cool."
  
  Section::::Shoulder pads.
   Electro-Mech manufactures a variety of accessories for use with their scoreboards. Control consoles, wireless RF modems sets, and customizable ID panels are all common accessories manufactured by Electro-Mech. Other accessories, such as horns and data cable, are outsourced.
  
  Section::::Technology.
   The role of an equipment manager has become an important one for football teams. The equipment manager has two main areas of responsibility: first, fitting each player on the team with a customized array of equipment that will provide maximum protection against injury, and, secondly, being responsible for the logistics of handling many pieces of equipment on a daily basis—keeping it repaired and in stock, and moving the equipment for road games.
   Section::::Coaching career.:Atlanta Falcons.
  
  Cable entered the professional ranks in 2006 as the offensive line coach for the NFL's Atlanta Falcons, under head coach Jim L. Mora. Mora was dismissed at the end of the season and Cable moved on.
  
  Section::::Coaching career.:Oakland Raiders.
   In addition, it does not record sounds or images, what was called "the privacy puzzle that stumped Google.
  
  One 2018 technology reviewer wrote that he wished it had a headphone jack "so it would be less disruptive in places where others are working." An attempt was made to use bone conduction.
  
  Section::::USA introduction.
  
  In 2018 a team headed by New York (State) Assemblyman Dov Hikind introduced use of OrCam devices to ten individuals screened for what he termed "new Israeli technology that really makes a difference to the blind."
   There have been different models of helmets designed to hold the drivers head in place. A helmet restraint is equipped in some five-point harness seats to prevent brain and neck injury. For example, in NASCAR, it protects the driver in case of a car crash or an immediate change of velocity where the driver has limited control of his momentum. The apparatus consists of a strap that runs from both of the sides of the helmet to the vehicle; or a strap connected to the vehicle from both sides of the driver that runs across the front of the helmet, instead of two independent straps on each side attached to the helmet.
   At the IWBF 1998 World Congress, two proposals were made. One was to allow everyone to use strapping. Another was to specifically ban strapping by 4.5 point players. The practice of strapping had begun by lower point players earlier in the sports history to give them better trunk control. Eventually, it was taken up by higher point players and included leg strapping.
   The new millennium brought the next big development for Setcom, the creation of the SuperMic. Not only did this development introduce a sleeker version of the typical police shoulder-microphone, it was a safer alternative, designed to auto-sync and move with the officer as multiple duties were performed. After its introduction in 2002 the SuperMic became one of the most popular communication devices used by motor officers throughout the US. 
   Section::::Applications.:Sports.
  
  A HMD system has been developed for Formula One drivers by Kopin Corp. and the BMW Group. The HMD displays critical race data while allowing the driver to continue focusing on the track as pit crews control the data and messages sent to their drivers through two-way radio. Recon Instruments released on two head-mounted displays for ski goggles, MOD and MOD Live, the latter based on an Android operating system.
  
  Section::::Applications.:Training and simulation.
   Another feature of "The Continuous Call Team" is a plethora of phone calls from people wishing to seek some counselling, to which they are none the wiser with no help whatsoever from the team who are only qualified in football related matters. For their troubles, they receive a "Continuous Call Team" Showbag that consists of novelty items. Although they are of no worth at all, they serve as a reminder and a great souvenir of when they have been counselled by "The Gibberers".
   The Raiders rushing attack ranked in the top 10 in the NFL in 2007 (sixth) and 2008 (10th) behind Cable's offensive lines.
  
  Section::::Coaching career.:Seattle Seahawks.
  
  Two weeks later on January 18, 2011, Cable was hired by the Seattle Seahawks as offensive line coach and assistant head coach, under head coach Pete Carroll.
   Cable joined the Oakland Raiders as offensive line coach for the 2007 season, under first-year head coach Lane Kiffin. Four games into the 2008 season with the team's record at 1-3, Kiffin was fired by owner Al Davis and Cable was named the interim head coach. The Raiders finished the 2008 season with a 4-8 record under Cable, but improved statistically in many categories.
   A recent addition to the football helmet is a visor or eye shield, traditionally used to protect players from eye injuries or glare. Former Chicago Bears quarterback Jim McMahon was the first to wear a visor/shield. The visors started out as clear or smoked, but now come in colors ranging from blue, gold, black, rainbow, silver, or amber. The visor/shield is used at the player's discretion.
   Gordon Kelly of "Forbes" noted that wireless audio technology was immature at the moment, with Bluetooth audio quality being inferior while Lightning audio reliability was still in question. The removal of the headphone jack meant "you’re being pushed into an era where you will have to pay more for decent headphones due to their need for an integrated DAC and/or Lightning licensing", and pointed out that "the only company to profit from this situation is Apple, who will now be charging licensing fees to millions of headphone companies".
   Thomas Lee Cable Jr. (born November 26, 1964) is an American football offensive line coach for the Oakland Raiders. Cable was most recently the Seattle Seahawks assistant head coach and offensive line coach. The Seahawks would win Super Bowl XLVIII over the Denver Broncos. He played college football at the University of Idaho and was on the replacement team for the Indianapolis Colts during the 1987 NFL players' strike. After being an assistant coach for several college football teams, as well as head coach at Idaho, Cable became an offensive line coach for the Atlanta Falcons and Oakland Raiders of the NFL before serving as head coach for the Raiders from 2008 to 2010.
   BULLET::::- Class 3: High Performance Electronic Products, for products that require continued and consistent performance and where periods of inoperativeness cannot be tolerated. The environment in which these cable harnesses are used may be "uncommonly harsh." This category encompasses devices involved in life support systems or that are used in military.
   List of Los Angeles Chargers broadcasters
  
  Section::::Radio.
   Christianson had a couple stops with both Avid Sports and XOS Digital where he worked to develop, implement and train coaches on the use and benefits of technology as it relates to the sport of football. Christianson is considered an expert when it comes to technology and how it relates to the game of football. He coordinated and helped develop large football technology projects at the Oakland Raiders, the University of Nebraska and the San Francisco 49ers to name just a few.
  
raw_presuppositions: NFL coaches should use wireless headsets.
raw_corrections: Wireless headsets have a chance of failing that wired headsets dont have. 