Knowledge Base

Found 642 results for: gcw script

02 How to calculate and draw the Waveform?

Online calculator: Audio file waveform (planetcalc.com) PCM audio data is stored as a sequence of signal amplitude samples recorded at regular intervals. E.g. one second of the low-quality 8kHz audio consists of 8000 amplitude samples. To display every point of this fragment as is, you need at...
Waveform
57 May 10, 2022
01 What is Pulse-Code-Modulation – PCM?

Pulse-code modulation - Wikipedia Pulse code modulation, or PCM for short, is a process that converts a time- and value-continuous analog signal into a time- and value-discrete digital signal. Sampling of the analog signal with a constant sampling rate over time. The sampling rate must be...
Waveform
25 May 10, 2022
00 What is a Waveform?

Waveform - Wikipedia The waveform is the pictorial representation of the time course of an oscillation. For example, volume and frequency are represented on the time axis. For the display, it is necessary to sample and digitize the continuous-time and continuous-value analog...
Waveform
30 May 10, 2022
05 How does GC Wizard authenticate with the Bundeswehr Talking Board

Check Authentification After entering the callsign/alias, letter to authentificate to and the three pairs of the authenification code these three pairs will be checked according to the given tables. The tables are hidden by default. If the authentification is correct you will...
Bundeswehr
117 May 10, 2022
04 How does GC Wizard obfuscate with the Bundeswehr Talking Board

Obfuscate Just switch to Encrypt and start typing your text. The text will be obfusctated immediately according to the given Numeral code. The Numeral code will be created randomly or custom as you choose. deObfuscate Just switch to Dencrypt and start entering the pairs of...
Bundeswehr
27 May 10, 2022
02 What is Obfuscation?

Obfuscate is another name for encrypt or encode. How does the Bundeswehr obfuscate? Obfuscation is done with the aliases/words/lettersNumeral Code Procedure The individual letters and numbers are searched for in the Numeral Code table and the corresponding letter in the header and...
Bundeswehr
55 May 10, 2022
01 What is authentication?

Authentication is the process of proving that you are authorized to participate in operations/information etc. Example: The radio station KEULE wants to check whether the radio station EREMIT is authorized for the radio circuit: EREMIT, KEULE here, what is the authentication for YANKEE,...
Bundeswehr
50 May 10, 2022
00 What is a Talking Board?

A Talking Board is used to either simplify or encode the communication, i.e. to disguise the actualto disguise the actually transmitted content for unintended listeners and readers. Essential components of a Talking Board are Directory of aliasesDirectory of cover wordsDirectory of cover...
Bundeswehr
135 May 10, 2022
01 How does GC Wizard interpret and generate Befunge programs?

Interpreting Befunge programs Just switch to Interpreter and enter the program. The Input field is used when input is necessary. All input has to be seperated by spaces. Debug The Debug Section provides further stepwise informtaion how the program was executed. For every step of...
Befunge
32 April 15, 2022
08 What is CCIR 476?

https://en.wikipedia.org/wiki/CCIR_476 CCIR 476 is a character encoding used in radio data protocols such as SITOR, AMTOR and Navtex. It is a rewrite of the ITA2 character encoding, expanded from a five-bit code to a seven-bit code. In each character, exactly four of the seven bits are...
CCITT
1188 April 15, 2022
07 What is the International Reference Alphabet?

The IRA is the further development of the IA No. 5. T.50 : International Reference Alphabet (IRA) (Formerly International Alphabet No. 5 or IA5) - Information technology - 7-bit coded character set for information interchange (itu.int). This recommendation specifies a 7-bit encoded character...
CCITT
953 April 15, 2022
06 What is the International Alphabet No. 5?

ITA-5 is a 7-bit code in addition to ITA-2. T.50 : International Alphabet No. 5 (itu.int) This recommendation specifies a set of 128 characters (control characters and graphic characters likeletters, numerals and symbols) with their coded representation. Most of these characters...
CCITT
390 April 15, 2022
05 What is the International Telegraph Alphabet No. 4?

With the progressive development, introduction and use of telex, there was a need to further develop the telegraph alphabet as well. The International Telegraph Alphabet No. 4 was developed for transmission with a 6-bit synchronous time-division 2-3-channel multiplex system for connection to...
CCITT
84 April 15, 2022
04 What is the International Telegraph Alphabet No. 3?

When transmitting telexes with 5-bit codes, e.g. ITA-2, over radio links, considerable error rates may occur. For this case the ITU recommendation p.13 recommends the use of a 7-bit ARQ system with the International Telegraph Alphabet No. 3. S.13 : Use on radio circuits of 7-unit synchronous...
CCITT
61 April 15, 2022
03 What is the CCITT ITA-2 Code?

Baudot code - Wikipedia To facilitate character entry, Donald Murray around 1901 developed a keyboard similar to that of a typewriter, which punched the associated string of five bits into a punched tape by pressing a single key. Murray retained Baudot's level switching, but rearranged...
CCITT
263 April 15, 2022
02 What is the CCITT ITA-1 Code?

Baudot code - Wikipedia The original Baudot code (later International Telegraph Alphabet No. 1 (ITA1), CCITT-1) was designed by Émile Baudot in 1870 for a telegraph apparatus he developed. Baudot applied for a patent for his invention in France: January 06, 1882, No. 146,716in Belgium:...
CCITT
350 April 15, 2022
02 Polyalphabetic encryption – ENIGMA

The Enigma (from the Greek word "ainigma" = riddle) is the undisputed star among the encryption machines of the Second World War. Not because it is the best, but because it is by far the best known. Whereby it was really good and almost impossible to crack. Purely technically, Enigma is a rotor...
Encryptions
139 April 07, 2022
00 What is Predator?

Predator is the character set used in the movie of the same name.
Predator
63 March 24, 2022
01 What is the Edelcrantz Telegraph?

https://en.wikipedia.org/wiki/Optical_telegraph#Edelcrantz_system_technical_operation The Swedish poet and inventor Abraham Niclas Edelcrantz developed a telegraph system based on 10 keys in 1794. His book "Afhandling om telegrapher och försök til en ny inrättning däraf" can be found in...
Edelcrantz Telegraph
429 March 24, 2022
01 How does the GC Wizard decrypt/encrypt with the Popham Telegraph?

Encrypt The entered text is immediately encoded and output graphically. Functions are available for the output: SaveZoom inZoom out Decrypt The character is entered by clicking on the segments. The following functions are available for entering characters: New...
Popham Telegraph
52 March 24, 2022