4F5AWW@QSL.NET - The Call Sign (QRZ)

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MODULE II - OPERATING PROCEDURES

THE CALL SIGN (QRZ)
A. THE AMATEUR CALL SIGN (QRZ). The Amateur Call Sign is the official identification issued by the National Telecommunications Commission (NTC) to an amateur station, club station or station installed for field trips/DX-peditions or special events.
Amateur call signs are formed by the prefix DU for Classes A, B, and C; DY for Class D; DX or DZ for club station or station installed for field trips or special events, followed by a figure corresponding to the amateur radio district where the station is located, and a suffix of not more than 3 letters. Class A amateurs are given one option to change the prefix of their call sign to 4D, 4E or 4F.

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CLASS OF STATION PREFIX DISTRICT NO. SUFFIX

Class A DU, 4D, 4E or 4F (Districts 1 to 9) (2 or more letters)
Class B & C DU (Districts 1 to 9) (2 or more letters)
Class D DY (Districts 1 to 9) (2 or more letters)
Amateur Radio Clubs DX or DZ (Districts 1 to 9) (2 or more letters)

AMATEUR RADIO DISTRICTS IN THE PHILIPPINES

DISTRICT REGIONS COVERED
District 1 National Capital Region (NCR), Region 4 (Southern Tagalog)
District 2 Region 1 (Ilocos Region), Region 2 (Nothern Luzon)
District 3 Region 3 (Central Luzon).
District 4 Region 5 (Bicol Region).
District 5 Region 8 (Eastern Visayas).
District 6 Region 6 (Western Visayas).
District 7 Region 7 (Central Visayas).
District 8 Region 9 (Western Mindanao), Region 12 (Southern Mindanao).
District 9 Region 10 (Northern Mindanao), Region 11 (Eastern Mindanao), Region 13 (Caraga Region).

B. THE TACTICAL CALL SIGN. The Tactical Call Sign is used usually during emergency operations or monitoring activities to achieve quick communication between the operators involved. A Tactical Call Sign may reflect a function, location or agency. Thus, avoiding confusion during communication. The NTC, however, requires amateur radio operators involved in such operation to use the tactical call sign with the amateur call sign. (See also sub-topic "The Essential Emergency Communication Network", Responding To Emergency Calls)
WHEN TO USE (TRANSMIT) THE CALL SIGN

1. At the start and at the end of each transmission.
2. As frequently as practicable, but not necessarily overdoing it, in the course of a long conversation (QSO), including transmissions made for tests, adjustments or experiments.
3. When using the call sign outside District 5, the additional "PORTABLE" for a portable station, or "MOBILE" for a mobile station, or "STROKE" for a base station, followed by the figure corresponding to the amateur radio district where the station is located at the time of transmission are added to the call sign.
Example: If DY5IBM is in Cebu City which is located in District 7, his complete call sign will be,
DY5IBM PORTABLE 7 (if using a portable station)
DY5IBM MOBILE 7 (if using a mobile station)
DY5IBM STROKE 7 (if using a base station) Written as: DY5IBM/7
4. When using a radio station other than your own, the additional "ON BOARD" followed by the call sign of the station being used are added to your call sign.
Example, If DYSIS is using the radio station of DY5BRO: "DY5SIS ON BOARD DY5BRO."
POSTING OF CALL SIGN. The NTC requires the posting of call sign in all types of amateur radio station:
1. For Fixed Amateur Radio Station - The call sign of a fixed amateur radio station characters at least 10 cm high shall be posted at the entrance to the premises where the fixed station is located;
2. For Mobile Station - The call sign with characters at least 5.08 cm high shall be posted on the windshield of a vehicle or vessel; and,
3. For Portable Station - The call sign with characters at least 0.635 cm high shall be posted on the equipment itself of a portable station.

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