Term
| T4A01 Which of the following is true concerning the microphone connectors on amateur transceivers? |
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Definition
| Some connectors include push-to-talk and voltages for powering the microphone |
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Term
| T4A02 What could be used in place of a regular speaker to help you copy signals in a noisy area? |
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Definition
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Term
| T4A03 Which is a good reason to use a regulated power supply for communications equipment? |
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Definition
| It prevents voltage fluctuations from reaching sensitive circuits |
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Term
| T4A04 Where must a filter be installed to reduce harmonic emissions? |
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Definition
| Between the transmitter and the antenna |
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Term
| T4A05 What type of filter should be connected to a TV receiver as the first step in trying to prevent RF overload from a nearby 2 meter transmitter? |
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Definition
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Term
| T4A06 Which of the following would be connected between a transceiver and computer in a packet radio station? |
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Definition
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Term
| T4A07 How is the computers sound card used when conducting digital communications using a computer? |
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Definition
| The sound card provides audio to the microphone input and converts received audio to digital form |
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Term
| T4A08 Which type of conductor is best to use for RF grounding? |
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Definition
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Term
| T4A09 Which would you use to reduce RF current flowing on the shield of an audio cable? |
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Definition
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Term
| T4A10 What is the source of a high-pitched whine that varies with engine speed in a mobile transceivers receive audio? |
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Definition
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Term
| T4A11 Where should a mobile transceivers power negative connection be made? |
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Definition
| At the battery or engine block ground strap |
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Term
| T4B01 What may happen if a transmitter is operated with the microphone gain set too high? |
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Definition
| The output signal might become distorted |
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Term
| T4B02 Which of the following can be used to enter the operating frequency on a modern transceiver? |
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Definition
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Term
| T4B03 What is the purpose of the squelch control on a transceiver? |
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Definition
| To mute receiver output noise when no signal is being received |
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Term
| T4B04 What is a way to enable quick access to a favorite frequency on your transceiver? |
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Definition
| Store the frequency in a memory channel |
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Term
| T4B05 Which of the following would reduce ignition interference to a receiver? |
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Definition
| Turn on the noise blanker |
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Term
| T4B06 Which of the following controls could be used if the voice pitch of a single-sideband signal seems too high or low? |
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Definition
| The receiver RIT or clarifier |
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Term
| T4B07 What does the term "RIT" mean? |
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Definition
| Receiver Incremental Tuning |
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Term
| T4B08 What is the advantage of having multiple receive bandwidth choices on a multimode transceiver? |
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Definition
| Permits noise or interference reduction by selecting a bandwidth matching the mode |
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Term
| T4B09 Which of the following is an appropriate receive filter to select in order to minimize noise and interference for SSB reception? |
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Definition
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Term
| T4B10 Which of the following is an appropriate receive filter to select in order to minimize noise and interference for CW reception? |
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Definition
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Term
| T4B11 Which of the following describes the common meaning of the term repeater offset? |
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Definition
| The difference between the repeaters transmit and receive frequencies |
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