The Random Letter Group exam is based on the conventions stated in PUB. 102 International Code of Signals.
1. A signal made by flashing light is divided into the following parts:
(a) The call.—It consists of the general call or the identity signal of the station to be called. It is answered by the answering signal.
(b) The identity.—The transmitting station makes “DE” followed by its identity signal or name. This will be repeated back by the receiving station which then signals its own identity signal or name. This will also be repeated back by the transmitting station.
(c) The text.—This consists of plain language or Code groups. When Code groups are to be used they should be preceded by the signal “YU”. Words of plain language may also be in the text, when the signal includes names, places, etc. Receipt of each word or group is acknowledged by “T”.
(d) The ending.—It consists of the ending signal “AR” which is answered by “R”.
Based on the above rules the exam starts with the signal identity "DE' followed by a four letter identity signal or name. Both "DE" and the identity signal or name are sent once.
This is followed by five random, three letter groups, each transmitted twice. The ending signal "AR" indicates the end of the three letter groups. In the example below the random letter groups are in red. Only the five random 3 letter groups are entered on the answer sheet.
If at any time during the exam you loose your place, use the Stop button at the bottom of the screen. The Restart Exam button starts the exam from the beginning.
Use a piece of scrap paper to write down the letters as they are received. If needed copy the dot and dash characters and decipher after transmission is complete, but before opening Pub 102.
Only the five, three letter groups are entered on the answer sheet. Five points are given for each correct letter in a group for a possible maximum total score of 75 points. (15 letters x 5 points each = 75 points)
Any group where the letters are misarranged will cause that group to be found in error.
Your answer sheet for the above example would look like this:
Enter three letter groups
1. SDF
2. GHJ
3. QWE
4. RTY
5. IOP