Which of the following must be programmed into a D-STAR digital transceiver before transmitting?
The correct answer is A: Your call sign. Before transmitting on a D-STAR digital transceiver, you must program your call sign into the radio. D-STAR systems use your call sign for identification and routing, so it's essential for proper operation.
D-STAR (Digital Smart Technologies for Amateur Radio) requires your call sign to be programmed into the radio's configuration. The call sign is used for station identification and for the D-STAR routing system (which can route calls based on call signs). Without your call sign programmed, the D-STAR system won't work properly. Other settings like output power and codec type may be adjustable, but your call sign is the essential requirement that must be programmed.
Exam Tip
D-STAR transmit = Program call sign. Remember: Before transmitting on a D-STAR transceiver, you must program your call sign. This is essential for D-STAR identification and routing.
Memory Aid
"**D**-STAR **T**ransmit = **D**emand **C**all sign (think 'DT = DC' = Demand Call sign)"
Real-World Application
You're setting up a D-STAR radio for the first time. You use the programming software to enter your call sign (KA1BC) into the radio's configuration. This call sign is stored in the radio and is used for all D-STAR transmissions - it identifies your station and is used by the D-STAR routing system. Without your call sign programmed, D-STAR won't work properly.
FCC Part 97.119Key Concepts
Why Other Options Are Wrong
Option B: Incorrect. While output power can be set, it's not a requirement before transmitting. You can transmit with default power settings.
Option C: Incorrect. The codec type is typically fixed in D-STAR (it uses a standard codec), not something you program before each transmission.
Option D: Incorrect. Not all options are required. Only your call sign must be programmed before transmitting on D-STAR.
题目解析
The correct answer is A: Your call sign. Before transmitting on a D-STAR digital transceiver, you must program your call sign into the radio. D-STAR systems use your call sign for identification and routing, so it's essential for proper operation. D-STAR (Digital Smart Technologies for Amateur Radio) requires your call sign to be programmed into the radio's configuration. The call sign is used for station identification and for the D-STAR routing system (which can route calls based on call signs). Without your call sign programmed, the D-STAR system won't work properly. Other settings like output power and codec type may be adjustable, but your call sign is the essential requirement that must be programmed.
考试技巧
D-STAR transmit = Program call sign. Remember: Before transmitting on a D-STAR transceiver, you must program your call sign. This is essential for D-STAR identification and routing.
记忆口诀
**D**-STAR **T**ransmit = **D**emand **C**all sign (think 'DT = DC' = Demand Call sign)
实际应用示例
You're setting up a D-STAR radio for the first time. You use the programming software to enter your call sign (KA1BC) into the radio's configuration. This call sign is stored in the radio and is used for all D-STAR transmissions - it identifies your station and is used by the D-STAR routing system. Without your call sign programmed, D-STAR won't work properly.
错误选项分析
Option B: Incorrect. While output power can be set, it's not a requirement before transmitting. You can transmit with default power settings. Option C: Incorrect. The codec type is typically fixed in D-STAR (it uses a standard codec), not something you program before each transmission. Option D: Incorrect. Not all options are required. Only your call sign must be programmed before transmitting on D-STAR.
知识点
D-STAR, Call sign, Digital radio, Programming
Verified Content
Question from official FCC Technician Class question pool. Explanation reviewed by licensed amateur radio operators.