Ten-codes, also known as 10-codes or ten signals, are code words used by many police officers to aid with voice communication. The codes were originally developed in 1937 to allow for brevity, clarity, and standardization of messages transmitted over radio channels. On old radio systems, channels were limited so messages needed to be short. Also, the first syllable of speech was often not transmitted, so the syllable 'ten' was prefixed to all numeric codes to ensure that the important information would be received.
Despite their usefulness, the exact meaning of ten-codes often varies between jurisdictions and locations. Free reader rabbit games online. In addition to law enforcement, ten-codes are frequently used on Citizens' Band (CB) radio. One of the most frequently used ten-codes, 10-4, has become popular enough to sometimes be used in every-day language.
| Code | Description |
|---|---|
| 10-00 | Officer down, all patrols respond |
| 10-0 | Use caution |
| 10-1 | You are being received poorly / Cannot copy |
| 10-2 | You are being received clearly / Signal is strong |
| 10-3 | Stop transmitting |
| 10-4 | Affirmative / Understood / Message received |
| 10-5 | Relay message to [person] |
| 10-6 | Busy / Out at call |
| 10-7 | Out of service (completely) |
| 10-7b | Out of service (personal) |
| 10-7c | Out of service (court) |
| 10-7od | Out of service (off duty) |
| 10-8 | In service |
| 10-8ot | In service (over time) |
| 10-9 | Repeat last message |
| 10-10 | Negative / Fight in progress |
| 10-11 | Identify frequency / Dispatching too fast |
| 10-12 | Standby / Visitor(s) present |
| 10-13 | Advise weather and road conditions |
| 10-14 | Convoy or escort detail / Suspicious person |
| 10-15 | Prisoner in custody / Message delivered |
| 10-15m | Prisoner in custody (mental case) |
| 10-16 | Pick up prisoner / Reply to message |
| 10-17 | Pick up papers / En route |
| 10-18 | Urgent / Complete present assignment ASAP |
| 10-19 | Return to station or location |
| 10-20 | Your location |
| 10-21 | Call by telephone |
| 10-21a | Advise home I will return at [ETA] |
| 10-21b | Call your home |
| 10-22 | Disregard / Cancel last message |
| 10-23 | Arrived at scene / Stand by until channel clears |
| 10-24 | Emergency backup / Emergency at station |
| 10-25 | Report to [person] / Do you have contact with [person] |
| 10-26 | Detaining suspect / Check auto registration |
| 10-27 | Request drivers license check |
| 10-28 | Check registration on vehicle |
| 10-29 | Request arrests/warrants check |
| 10-29a | Check wants, subject [PIN] |
| 10-29c | Check complete, subject [NCIC] |
| 10-29f | Subject wanted, felony |
| 10-29h | Hazard potential from subject |
| 10-29m | Subject wanted, misdemeanor |
| 10-29r | Check wants and record, subject [PIN, CJIC] |
| 10-29v | Vehicle wanted |
| 10-30 | Does not conform to rules or regulations |
| 10-31 | Crime in progress / in pursuit |
| 10-32 | Person with gun |
| 10-33 | Emergency, all units stand by |
| 10-34 | Open door or window / Riot |
| 10-35 | Confidential information or open window |
| 10-36 | Provide current time of day |
| 10-37 | Identify yourself / suspicious vehicle |
| 10-38 | Traffic stop |
| 10-39 | Run with lights and siren |
| 10-40 | Run silent (no lights or siren) |
| 10-41 | Begin duty |
| 10-42 | End duty |
| 10-43 | Information |
| 10-44 | Permission to leave patrol |
| 10-45 | Condition of patient |
| 10-45a | Condition of patient - Good |
| 10-45b | Condition of patient - Serious |
| 10-45c | Condition of patient - Critical |
| 10-45d | Condition of patient - Dead |
| 10-46 | Motorist assist |
| 10-47 | Emergency road repair |
| 10-48 | Traffic control |
| 10-49 | Traffic light out |
| 10-50 | Officer welfare check / under influence of drugs |
| 10-51 | Tow truck needed / under influence of alcohol |
| 10-52 | Ambulance needed |
| 10-53 | Road blocked / Man down |
| 10-54 | Possible fatality |
| 10-54d | Possible dead body |
| 10-55 | Intoxicated driver |
| 10-55d | Send coroner |
| 10-56 | Intoxicated pedestrian / Suicide |
| 10-56a | Suicide attempt |
| 10-57 | Hit and run accident / Missing person |
| 10-58 | Direct Traffic |
| 10-59 | Escort or convoy / Security check |
| 10-60 | Squad in vicinity |
| 10-61 | Personnel in vicinity / Not wanted |
| 10-62 | Subject possibly wanted |
| 10-63 | Subject positive / Prepare to copy |
| 10-64 | Subject wanted / Found property |
| 10-65 | Net message assignment |
| 10-66 | Check officer's well-being |
| 10-67 | Clear for next message |
| 10-68 | Dispatch message |
| 10-69 | Clear to copy transmission? |
| 10-70 | Fire alarm / Prowler |
| 10-71 | Advise nature of fire / Shooting |
| 10-72 | Report progress of fire / Gun involved / D.O.A. |
| 10-73 | How do you copy / Smoke report |
| 10-74 | Negative / Theft |
| 10-75 | Severe weather statement |
| 10-76 | En route to location |
| 10-77 | Estimated Time of Arrival |
| 10-78 | Need assistance / Send ambulance |
| 10-79 | Notify coroner / Bomb threat |
| 10-80 | Pursuit in progress |
| 10-80a | Assist radio dispatcher |
| 10-81 | Traffic stop initiated / Breathalyzer request |
| 10-82 | Reserve lodging |
| 10-83 | Work/school crossing detail |
| 10-84 | Advise ETA |
| 10-85 | Arrival delay due to [cause] |
| 10-86 | Officer on-duty |
| 10-87 | Give call letters of your station |
| 10-88 | Advise phone number of officer |
| 10-89 | Bomb threat |
| 10-90 | Alarm going off / Bank alarm |
| 10-91 | Pick up subject / Prepare for inspection / Animal |
| 10-91a | Animal - stray |
| 10-91b | Animal - noisy |
| 10-91c | Animal - injured |
| 10-91d | Animal - dead |
| 10-91e | Animal - bite |
| 10-91g | Animal - pickup |
| 10-91j | Animal - pickup collect |
| 10-91l | Animal - leash law violation |
| 10-91v | Animal - vicious |
| 10-92 | Subject in custody / Parking violation |
| 10-93 | Blockage |
| 10-94 | Street racing |
| 10-95 | Officer's residence |
| 10-96 | Mental patient / Detain suspect |
| 10-97 | Arrived at scene / Record information |
| 10-98 | Assignment complete / Prison break |
| 10-99 | Cardiac arrest / Officer held hostage |
| 10-100 | Misdemeanor warrant / Out using restroom |
| 10-101 | Ending security check |
| 10-102 | Cruelty to animals |
| 10-103 | Disturbance |
| 10-103f | Disturbance by fight |
| 10-103m | Disturbance by mental person |
| 10-106 | Obscenity |
| 10-107 | Suspicious person |
| 10-108 | Officer down / Officer in danger |
| 10-109 | Suicide |
| 10-110 | Juvenile disturbance |
| 10-112 | Impersonating an officer |
| 10-200 | Narcotics, drugs involved |
| 10-1000 | Felony warrant / Dead person |
| 10-2000 | Police required immediately |
In telecommunications, radio silence or Emissions Control (EMCON) is a status in which all fixed or mobile radio stations in an area are asked to stop transmitting for safety or security reasons.
The term 'radio station' may include anything capable of transmitting a radio signal. A single ship, aircraft, spacecraft, or group of them may also maintain radio silence.[1]
Amateur radio Wilderness Protocol[edit]
The Wilderness Protocol recommends that those stations able to do so should monitor the primary (and secondary, if possible) frequency every three hours starting at 7 AM, local time, for 5 minutes starting at the top of every hour, or even continuously.
- Radio Silence was formed in 2011 by Matt Bettinelli-Olpin, Tyler Gillett, Justin Martinez and Chad Villella. The collective had worked together previously as Chad, Matt & Rob and were known for their blend of comedy, adventure, sci-fi and horror. Martinez later left the group. Matt Bettinelli-Olpin is originally from Oakland, CA.He is the founding guitarist of punk band Link 80 and a.
- Last Updated on October 19, 2020. Editor’s Note: Another guest submission from Zac Martin. The subject of Ham communications has been touched upon in the past, once from Pat Henry – Should You Get a HAM Radio License or Hide from the Government? Back in 2013 and once from R. Ann Parris – Radio Silence, Communications Without Electronics in March of this year.
The Wilderness Protocol is now included in both the ARRL ARES Field Resources Manual[2] and the ARES Emergency Resources Manual. Per the manual, the protocol is:
They would not be the first agency to operate on a frequency without a valid license. The RR database shows 152.8100 and 152.0900 both of which they hold no license to use. Also 152.45000 and 152.4200 are listed as 'McD Law.West', and 'McD F/E Tac3' which were both licensed to a Jared Richmond and not the county. Radio Silence and Little Snitch are both great apps, and this is a totally biased comparison. Take it with as many grains of salt as you need. Take it with as many grains of salt as you need. This comparison assumes that you want to block apps from accessing the net. Radio Silence is the fifth episode of Season 6, and the eighty-fifth episode of the series. 1 Synopsis 2 Plot 3 Cast 3.1 Main Cast 3.2 Supporting Cast 3.3 Guest Cast 4 Continuity 5 Trivia 6 Body Count 7 Locations 8 Soundtrack 9 Gallery Trapped inside the Wild Hunt, Stiles reunites with an unexpected ally; Scott, Lydia and Malia learn that Stiles' Jeep may be connected to his disappearance.
The Wilderness protocol (see page 101, August 1995 QST) calls for hams in the wilderness to announce their presence on, and to monitor, the national calling frequencies for five minutes beginning at the top of the hour, every three hours from 7 AM to 7 PM while in the back country. A ham in a remote location may be able to relay emergency information through another wilderness ham who has better access to a repeater. National calling frequencies: 52.525, 146.52, 223.50, 446.00, 1294.50 MHz.
Priority transmissions should begin with the LITZ (Long Interval Tone Zero or Long Time Zero) DTMF signal for at least 5 seconds. CQ like calls (to see who is out there) should not take place until after 4 minutes after the hour.
Maritime mobile service[edit]
Distress calls[edit]
Radio silence can be used in nautical and aeronautical communications to allow faint distress calls to be heard (see Mayday). In the latter case, the controlling station can order other stations to stop transmitting with the proword 'Seelonce Seelonce Seelonce'. (The word uses an approximation of the French pronunciation of the word silence, 'See-LAWNCE.'). Once the need for radio silence is finished, the controlling station lifts radio silence by the prowords 'Seelonce FINI.'[3] Disobeying a Seelonce Mayday order constitutes a serious criminal offence in most countries. The aviation equivalent of Seelonce Mayday is the phrase or command 'Stop Transmitting - Distress (or Mayday)'. 'Distress traffic ended' is the phrase used when the emergency is over. Again, disobeying such an order is extremely dangerous and is therefore a criminal offence in most countries.
Silent periods[edit]
Up until the procedure was replaced by the Global Maritime Distress and Safety System (August 1, 2013 in the U.S.), maritime radio stations were required to observe radio silence on 500 kHz (radiotelegraph) for the three minutes between 15 and 18 minutes past the top of each hour, and for the three minutes between 45 and 48 minutes past the top of the hour; and were also required to observe radio silence on 2182 kHz (upper-sideband radiotelephony) for the first three minutes of each hour (H+00 to H+03) and for the three minutes following the bottom of the hour (H+30 to H+33).
For 2182 kHz, this is still a legal requirement, according to 47 CFR 80.304 - Watch requirement during silence periods.[4]
Military[edit]
Radio Silence License Key
An order for Radio silence is generally issued by the military where any radio transmission may reveal troop positions, either audibly from the sound of talking, or by radio direction finding. In extreme scenarios Electronic Silence ('Emissions Control' or EMCON) may also be put into place as a defence against interception.[5]
In the British Army, the imposition and lifting of radio silence will be given in orders or ordered by control using 'Battle Code' (BATCO). Control is the only authority to impose or lift radio silence either fully or selectively. The lifting of radio silence can only be ordered on the authority of the HQ that imposed it in the first place. During periods of radio silence a station may, with justifiable cause, transmit a message. This is known as Breaking Radio Silence. The necessary replies are permitted but radio silence is automatically re-imposed afterwards. The breaking station transmits its message using BATCO to break radio silence.
The command for imposing radio silence is:
Hello all stations, this is 0. Impose radio silence. Over.
Other countermeasures are also applied to protect secrets against enemy signals intelligence. Usb floppy emulator software mac.
Electronic emissions can be used to plot a line of bearing to an intercepted signal, and if more than one receiver detects it, triangulation can estimate its location. Radio Detection Finding (RDF) was critically important during the Battle of Britain and reached a high state of maturity in early 1943 with the aid of United States institutions aiding British Research and Development under the pressures of the continuing Battle of the Atlantic during World War II when locating U-boats. One key breakthrough was marrying MIT/Raytheon developed CRT technology with pairs of RDF antennas giving a differentially derived instant bearing useful in tactical situations, enabling escorts to run down the bearing to an intercept. The U-boat command of Wolfpacks required a minimum once daily communications check-in, allowing new Hunter-Killer groups to localize U-boats tactically from April on, leading to dramatic swings in the fortunes of war in the battles between March, when the U-boats sank over 300 allied ships and 'Black May' when the allies sank at least 44 U-boats—each without orders to exercise EMCON/radio silence.[citation needed]
Other uses[edit]
Radio silence can be maintained for other purposes, such as for highly sensitive radio astronomy. Radio silence can also occur for spacecraft whose antenna is temporarily pointed away from Earth in order to perform observations,[6] or there is insufficient power to operate the radio transmitter,[7] or during re-entry when the hot plasma surrounding the spacecraft blocks radio signals.[8]
In the USA, CONELRAD and EBS (which are now discontinued), and EAS (which is currently active) are also ways of maintaining radio silence, mainly in broadcasting, in the event of an attack.
Examples of radio silence orders[edit]
- Radio silencing helped hide the Japanese attack on Pearl Harbor in World War II.[9] The attackers had used AM radio station KGU in Honolulu as a homing signal.
- On June 2, 1942, during World War II, a nine-minute air-raid alert, including at 9:22 pm a radio silence order applied to all radio stations from Mexico to Canada.[10]
See also[edit]
References[edit]
Radio Silence Licence Key
- ^Iraqi ships maintaining radio silence The Guardian
- ^'ARES Field Resources Manual'(PDF).
- ^U.S. Coast Guard, Radiotelephone Handbook, COMDTINST M2300.7
- ^'47 CFR 80.304 - Watch requirement during silence periods'.
- ^Emissions Control 3 Mission Airforce Technology
- ^George Musser (July 14, 2015). 'New Horizons Emerges Unscathed from Pluto Flyby'. Scientific American.
- ^Jim Algar (November 15, 2014). 'Philae Lander Historic Comet Mission Cut Short? Probe Goes on Radio Silence as Battery Depletes'. Tech Times.
- ^Charles Q. Choi (June 16, 2015). 'New Spaceship Antenna Prevents Radio Silence During Fiery Re-Entry'. Space.com.
- ^Pearl Harbor National Geographic
- ^'1942 World War II Chronology'. www.sfmuseum.org. Retrieved 2019-04-07.
Radio Silence 2.3 License Key