Advanced Qualification · A-005 Transmitters, modulation and processing · A-005-002-010
After you have opened a VHF power amplifier to make internal tuning adjustments, what should you do before you turn the amplifier on?
- ARemove all amplifier shielding to ensure maximum cooling
- BBe certain all amplifier shielding is fastened in place
- CMake sure that the power interlock switch is bypassed so you can test the amplifier
- DBe certain no antenna is attached so that you will not cause any interference
Correct answer: B — Be certain all amplifier shielding is fastened in place. From the official ISED question bank, verified word for word.
Why
Fastening all amplifier shielding back in place is required because the metal covers act as a safety barrier that stops high voltages from shocking you and prevents radio waves from escaping and interfering with other electronics. The full explanation — and one for every question — is in Pro.
Practise this section
Transmitters, modulation and processing is section A-005 of the Advanced exam: Transmitters, modulation and processing: AM, FM, SSB, keying, speech processing, and the numbers behind occupied bandwidth.
Drill A-005 — free, no account