Radio Amateur Quiz Canadian License

Questions in this category:

• B-008-001-001: What is meant by receiver overload?
• B-008-001-002: What is one way to tell if radio frequency interference to a receiver is caused by front-end overload?
• B-008-001-003: If a neighbour reports television interference whenever you transmit, no matter what band you use, what is probably the cause of the interference?
• B-008-001-004: What type of filter should be connected to a TV receiver as the first step in trying to prevent RF overload from an amateur HF station transmission?
• B-008-001-005: During a club ARRL Field Day outing, reception on the 20 m SSB station is compromised every time the 20 m CW station is on the air. What might cause such interference?
• B-008-001-006: Inter-modulation in a broadcast receiver by a nearby transmitter would be noticed in the receiver as:
• B-008-001-007: You have connected your hand-held VHF transceiver to an outside gain antenna. You now hear a mixture of signals together with different modulation on your desired frequency. What is the nature of this interference?
• B-008-001-008: Two or more strong out-of-band signals mix in your receiver to produce interference on a desired frequency. What is this called?
• B-008-001-009: Two mobile stations are traveling along the same road in close proximity to each other and having trouble communicating through a local repeater. Why may it be necessary to use simplex operation to communicate between these cars?
• B-008-001-010: A television receiver suffers interference on channel 5 (76 - 82 MHz) only when you transmit on 14 MHz. From your home you see the tower of a commercial FM station known to broadcast on 92.5 MHz. Which of these solutions would you try first?
• B-008-001-011: How can intermodulation be reduced?
• B-008-002-001: What devices would you install to reduce or eliminate audio-frequency interference to home entertainment systems?
• B-008-002-002: What should be done if a properly operating amateur station is the cause of interference to a nearby telephone?
• B-008-002-003: What sound is heard from a public-address system if audio rectification of a nearby single-sideband phone transmission occurs?
• B-008-002-004: What sound is heard from a public-address system if audio rectification of a nearby CW transmission occurs?
• B-008-002-005: How can you minimize the possibility of audio rectification of your transmitter's signals?
• B-008-002-006: An amateur transmitter is being heard across the entire dial of a broadcast receiver. The receiver is most probably suffering from:
• B-008-002-007: Your SSB HF transmissions are heard muffled on a sound system in the living room regardless of its volume setting. What causes this?
• B-008-002-008: What device can be used to minimize the effect of RF pickup by audio wires connected to stereo speakers, intercom amplifiers, telephones, etc.?
• B-008-002-009: Stereo speaker leads often act as antennas to pick up RF signals. What is one method you can use to minimize this effect?
• B-008-002-010: One method of preventing RF from entering a stereo set through the speaker leads is to wrap each of the speaker leads:
• B-008-002-011: Stereo amplifiers often have long leads which pick up transmitted signals because they act as:
• B-008-003-001: How can you prevent key-clicks?
• B-008-003-002: If someone tells you that signals from your hand-held transceiver are interfering with other signals on a frequency near yours, what could be the cause?
• B-008-003-003: If your transmitter sends signals outside the band where it is transmitting, what is this called?
• B-008-003-004: What problem may occur if your transmitter is operated without the cover and other shielding in place?
• B-008-003-005: In Morse code transmission, local RF interference (key-clicks) is produced by:
• B-008-003-006: Key-clicks, heard from a Morse code transmitter at a distant receiver, are the result of:
• B-008-003-007: In a Morse code transmission, broad bandwidth RF interference (key-clicks) heard at a distance is produced by:
• B-008-003-008: What should you do if you learn your transmitter is producing key clicks?
• B-008-003-009: A parasitic oscillation:
• B-008-003-010: Parasitic oscillations in the RF power amplifier stage of a transmitter may be found:
• B-008-003-011: Transmitter RF amplifiers can generate parasitic oscillations:
• B-008-004-001: If a neighbour reports television interference on one or two channels only when you transmit on 15 metres, what is probably the cause of the interference?
• B-008-004-002: What is meant by harmonic radiation?
• B-008-004-003: Why is harmonic radiation from an amateur station not wanted?
• B-008-004-004: What type of interference may come from a multi-band antenna connected to a poorly tuned transmitter?
• B-008-004-005: If you are told your station was heard on 21 375 kHz, but at the time you were operating on 7125 kHz, what is one reason this could happen?
• B-008-004-006: What causes splatter interference?
• B-008-004-007: Your amateur radio transmitter appears to be creating interference to the television on channel 3 (60-66 MHz) when you are transmitting on the 15 metre band. Other channels are not affected. The most likely cause is:
• B-008-004-008: One possible cause of TV interference by harmonics from an SSB transmitter is from ""flat topping"" - driving the power amplifier into non-linear operation. The most appropriate remedy for this is:
• B-008-004-009: In a transmitter, excessive harmonics are produced by:
• B-008-004-010: An interfering signal from a transmitter is found to have a frequency of 57 MHz (TV Channel 2 is 54 - 60 MHz). This signal could be the:
• B-008-004-011: Harmonics may be produced in the RF power amplifier of a transmitter if:
• B-008-005-001: What type of filter might be connected to an amateur HF transmitter to cut down on harmonic radiation?
• B-008-005-002: Why do modern HF transmitters have a built-in low pass filter in their RF output circuits?
• B-008-005-003: What circuit blocks RF energy above and below a certain limit?
• B-008-005-004: What should be the impedance of a low pass filter as compared to the impedance of the transmission line into which it is inserted?
• B-008-005-005: In order to reduce the harmonic output of a high frequency (HF) transmitter, which of the following filters should be installed at the transmitter?
• B-008-005-006: To reduce harmonic output from a high frequency transmitter, you would put a ____________ in the transmission line as close to the transmitter as possible.
• B-008-005-007: To reduce energy from an HF transmitter getting into a television set, you would place a ____________ as close to the TV as possible.
• B-008-005-008: A band pass filter will:
• B-008-005-009: A band reject filter will:
• B-008-005-010: A high pass filter would normally be fitted:
• B-008-005-011: A low pass filter suitable for a high frequency transmitter would: