HAM RADIO FLASH CARDS FOR FCC
TEST QUESTIONS AND ANSWERS
30 watts,
Power is the rate of of electrical energy generation or consumption.
P=V×I (watts = volts × amperes)
Where P is power (W), V is voltage (V), and I is current (A).
P=I×V
V=12V
I=2.5A
P=12V×2.5A=30W - ANS-How much power is being used in a circuit when the applied
voltage is 12 volts DC and the current is 2.5 amperes?
At no time.
Explanation: To quote FCC rules Part 97 section 101,
(d) No amateur operator shall willfully or maliciously interfere with or cause interference
to any radio communication or signal.
This FCC statement applies to radio communications, regardless of content, frequency,
event, or time boundaries; therefore, the answer is At no time. - ANS-When is willful
interference to other amateur radio stations permitted?
It divides between them dependent on the value of the components.
In the animation below, the amount of voltage is indicated by the darkness of the green,
and the current is represented by the "walking ant" animation. In the animation the
green is on top and the walking ant is on the bottom. The change occurs at the
junctions. - ANS-What happens to current at the junction of two components in parallel?
UHF signals are usually not reflected by the ionosphere.
Explanation: Any time you hear stations directly (not using a repeater system) from far
away, you can assume some sort of atmospheric condition is helping the signal to
travel. Most long-distance radio waves bounce off the ionosphere. However, signals in
the UHF spectrum have such a narrow wavelength that they don't bounce off the
ionosphere at all -- they pass right through it into outer space. (This is why higher
frequencies are ideal for communicating with satellites). Thus, if you hear a signal in the
UHF band, it's safe to assume the source of that signal is nearby. - ANS-Why are direct
(not via a repeater) UHF signals rarely heard from stations outside your local coverage
area?
Phase Shift Keying.
, Explanation: Phase Shift Keying is a method for digitally transmitting data (with a
computer of some sort) by varying (keying) the phase of the signal. Phase refers to
where you are in the cycle (the peaks and valleys of the sine wave) - ANS-What does
the abbreviation "PSK" mean?
A device that assists in manual sending of Morse code.
Explanation: An electronic keyer is the modern fancy replacement for the traditional
telegraph key, or in other words a device that assists in manual sending of Morse code.
Electronic keyers can have a variety of functions including:
Separate keys for sending dots and dashes at a specified rate.
The ability to set a limited transmission rate (in WPM) while allowing the operator to "get
ahead" of the current transmission by buffering up additional code or word spaces to be
sent in sequence after previously entered code is sent.
The ability to continually send dots or dashes by holding down a key so that fewer hand
movements are required to transmit a series of dots or dashes.
The ability to combine some functions with the use of a tradtional key that is plugged
into the electronic keyer.
Often they are hardware devices but they can also be computer or smartphone s - ANS-
What is an electronic keyer?
A directional antenna.
Explanation: A hidden transmitter hunt, also known as a "Fox Hunt", involves having a
hidden transmitter (the "fox") that transmits periodically while other operators attempt to
find it. The simplest way to do this is to watch the signal strength meter on your radio
while rotating a directional antenna to find out from which direction the signal is
strongest.
A calibrated SWR meter might be helpful for tuning your antenna, but for a fox hunt you
may actually want an out of tune antenna -- since it wouldn't receive as well, it would be
easier to see where the signal is coming from - ANS-Which of these items would be
useful for a hidden transmitter hunt?
Fog and light rain will have little effect on these bands
Explanation: The main thing to remember is that the higher the frequency, the more RF
energy is absorbed (and converted into heat) by water and solids.
For 10m and 6m wavelengths, the frequency isn't high enough to be affected by fog and
light rain so fog and light rain will have little effect on those bands.
The easiest way to remember this is your microwave oven. The microwave oven is a
microwave oven because the oven microwave frequency used is optimized for getting
absorbed by and thus heating the water in your food.
If your microwave oven were a 10m or 6m wave oven instead, it wouldn't be much of an
oven because your leftovers wouldn't be getting very warm at the same power usage.
10m and 6m are rather far from "micro" when it comes to wavelength. - ANS-How might
fog and light rain affect radio range on 10 meter and 6 meter bands?
Field Effect Transistor.
TEST QUESTIONS AND ANSWERS
30 watts,
Power is the rate of of electrical energy generation or consumption.
P=V×I (watts = volts × amperes)
Where P is power (W), V is voltage (V), and I is current (A).
P=I×V
V=12V
I=2.5A
P=12V×2.5A=30W - ANS-How much power is being used in a circuit when the applied
voltage is 12 volts DC and the current is 2.5 amperes?
At no time.
Explanation: To quote FCC rules Part 97 section 101,
(d) No amateur operator shall willfully or maliciously interfere with or cause interference
to any radio communication or signal.
This FCC statement applies to radio communications, regardless of content, frequency,
event, or time boundaries; therefore, the answer is At no time. - ANS-When is willful
interference to other amateur radio stations permitted?
It divides between them dependent on the value of the components.
In the animation below, the amount of voltage is indicated by the darkness of the green,
and the current is represented by the "walking ant" animation. In the animation the
green is on top and the walking ant is on the bottom. The change occurs at the
junctions. - ANS-What happens to current at the junction of two components in parallel?
UHF signals are usually not reflected by the ionosphere.
Explanation: Any time you hear stations directly (not using a repeater system) from far
away, you can assume some sort of atmospheric condition is helping the signal to
travel. Most long-distance radio waves bounce off the ionosphere. However, signals in
the UHF spectrum have such a narrow wavelength that they don't bounce off the
ionosphere at all -- they pass right through it into outer space. (This is why higher
frequencies are ideal for communicating with satellites). Thus, if you hear a signal in the
UHF band, it's safe to assume the source of that signal is nearby. - ANS-Why are direct
(not via a repeater) UHF signals rarely heard from stations outside your local coverage
area?
Phase Shift Keying.
, Explanation: Phase Shift Keying is a method for digitally transmitting data (with a
computer of some sort) by varying (keying) the phase of the signal. Phase refers to
where you are in the cycle (the peaks and valleys of the sine wave) - ANS-What does
the abbreviation "PSK" mean?
A device that assists in manual sending of Morse code.
Explanation: An electronic keyer is the modern fancy replacement for the traditional
telegraph key, or in other words a device that assists in manual sending of Morse code.
Electronic keyers can have a variety of functions including:
Separate keys for sending dots and dashes at a specified rate.
The ability to set a limited transmission rate (in WPM) while allowing the operator to "get
ahead" of the current transmission by buffering up additional code or word spaces to be
sent in sequence after previously entered code is sent.
The ability to continually send dots or dashes by holding down a key so that fewer hand
movements are required to transmit a series of dots or dashes.
The ability to combine some functions with the use of a tradtional key that is plugged
into the electronic keyer.
Often they are hardware devices but they can also be computer or smartphone s - ANS-
What is an electronic keyer?
A directional antenna.
Explanation: A hidden transmitter hunt, also known as a "Fox Hunt", involves having a
hidden transmitter (the "fox") that transmits periodically while other operators attempt to
find it. The simplest way to do this is to watch the signal strength meter on your radio
while rotating a directional antenna to find out from which direction the signal is
strongest.
A calibrated SWR meter might be helpful for tuning your antenna, but for a fox hunt you
may actually want an out of tune antenna -- since it wouldn't receive as well, it would be
easier to see where the signal is coming from - ANS-Which of these items would be
useful for a hidden transmitter hunt?
Fog and light rain will have little effect on these bands
Explanation: The main thing to remember is that the higher the frequency, the more RF
energy is absorbed (and converted into heat) by water and solids.
For 10m and 6m wavelengths, the frequency isn't high enough to be affected by fog and
light rain so fog and light rain will have little effect on those bands.
The easiest way to remember this is your microwave oven. The microwave oven is a
microwave oven because the oven microwave frequency used is optimized for getting
absorbed by and thus heating the water in your food.
If your microwave oven were a 10m or 6m wave oven instead, it wouldn't be much of an
oven because your leftovers wouldn't be getting very warm at the same power usage.
10m and 6m are rather far from "micro" when it comes to wavelength. - ANS-How might
fog and light rain affect radio range on 10 meter and 6 meter bands?
Field Effect Transistor.
