For aircraft on a Search and Rescue case.
The transponder code set on the aircraft's transponder would be 7700.
An immobilizer with a transponder is a security system used in vehicles to prevent unauthorized starting. When the key is inserted into the ignition, the transponder chip within the key emits a unique code. The car's immobilizer system reads this code; if it matches the stored code in the vehicle's computer, the engine is allowed to start. If the code is incorrect or absent, the immobilizer disables the engine, preventing it from starting.
The country code and area code of Brentwood, United Kingdom is 44, (0)1277.
This isn't a London code. It is the area code for Brentwood in Essex which is about 30 miles northeast of London.
Programmer and PIN code required
transponder/radar
RFID stands for radio frequency identification. Basically it's a small radio that's sitting there listening. When another radio sends out the message"who are you" the transponder responds by sending out an identification code.
The transponder, by sending a signal to the pit wall, is used to identify individual cars on the track, provide accurate lap timing and overall position in the race.
The number 1277 can be written in Roman numerals as MCCLXXVII
The validation code on an E-ZPass NY transponder is typically found on the back of the device. It is a series of numbers printed on a label or sticker. If you are unable to locate it, you can also refer to any documentation or account information provided when you received your transponder.
An aircraft transponder signals position and (usually) altitude too to ground controllers. A nonfunctional transponder can be removed from its mount with an Allen key and sent to an avionics shop for repair - or another used transponder can be purchased to replace the failed item. Repair costs can easily equal replacement cost with a used item, so this choice can be attractive Looking on eBay can be helpful.
Satellite technology uses a transponder to receive sings and then transfer them to satellites in other locations. They are used for purposes of space satellites and GPS.