Section B · CHAPTER 23 OF 24

Key facts for quick revision

DXR ASOC Exam Practice Portal · Free study material

Question area	Key point
Purpose of amateur service	Self-training, intercommunication and technical investigations.
Financial interest	Amateur service is for a personal aim and without pecuniary interest.
Indian current rule set	Telecommunications (Amateur Services) Rules, 2024.
Older syllabus references	Indian Wireless Telegraph Rules, 1973 and Amateur Service Rules, 1978.
Current ASOC categories	General and Restricted.
Minimum age in the 2024 Rules	12 years for an eligible Indian citizen.
Examination language	English.
Morse requirement	Specified for ASOC (General), at the level notified by Government.
Pass requirement	At least 40% of total marks for the relevant ASOC category.
Who assigns call signs?	Central Government / competent DoT authority.
Call sign identification	At start and end of each transmission period; repeat if it exceeds 10 minutes.
Log time standard	Indian Standard Time.
Log format	Chronological bound book; no gaps; entries made at the time.
Log retention	One year from the date of the last entry, unless further retention is directed.
Equipment register	Required details of apparatus, source, date, make/model/type and serial number.
Frequency measurement	Reliable measuring equipment at the authorised station; verify after frequency changes.
Interference	Stop or restrict transmissions as required when interference is reported/requested.
Test signal duration	Not more than 30 seconds under the Indian Annexure.
End of Morse message	AR.
End of Morse contact	VA / SK as operating prosign; Indian Annexure refers to VA.
End of voice message	Over.
End of voice contact	Out.
International frequency allocations	ITU Radio Regulations Article 5.
Amateur service international rules	ITU Radio Regulations Article 25.
Emission designator	Necessary bandwidth plus three symbols.
Third-party international traffic	Only in emergencies or disaster relief, subject to national administration.
Special event call sign application	At least 90 days before the event under Rule 13.
Special event call sign validity	90 days from commencement of the event, subject to the Rules.