E2C Contest and DX operating;
spread-spectrum transmissions;
automatic HF forwarding.
E2C01
(A)
What
would be the ideal operating strategy for a worldwide DX contest during a solar
minimum instead of a solar maximum?
A. 160-40 meters would be emphasized
during the evening; 20 meters during daylight hours
B. There would be little to no strategic
difference
C. 80 meters would support worldwide
communication during mid-day hours
D. 10 and 15 meters should be tried one hour
before sunset
E2C02
(A)
When
operating during a contest, which of these standards should you generally
follow?
A. Always listen before
transmitting, be courteous and do not cause harmful interference to other
communications
B. Always reply to other stations calling CQ at
least as many times as you call CQ
C. When initiating a contact, always reply with
the call sign of the station you are calling followed by your own call sign
D. Always include your signal report, name and
transmitter power output in any exchange with another station
E2C03
(B)
What is
one of the main purposes for holding on-the-air operating contests?
A. To test the dollar-to-feature value of
station equipment during difficult operating circumstances
B. To enhance the
communicating and operating skills of amateurs in readiness for an emergency
C. To measure the ionospheric capacity for
refracting RF signals under varying conditions
D. To demonstrate to the FCC that amateur
station operation is possible during difficult operating circumstances
E2C04 (C)
Which
of the following is typical of operations during an international amateur DX
contest?
A. Calling CQ is always done on an odd minute
and listening is always done on an even minute
B. Contacting a DX station is best accomplished
when the WWV K index is above a reading of 8
C. Some DX operators use
split frequency operations (transmitting on a frequency different from the
receiving frequency)
D. DX contacts during the day are never
possible because of known band attenuation from the sun
E2C05 (D)
If a DX
station asks for your grid square locator, what should be your reply?
A. The square of the power fed to the grid of
your final amplifier and your current city, state and country
B. The DX station's call sign followed by your
call sign and your RST signal report
C. The subsection of the IARU region in which
you are located based upon dividing the entire region into a grid of squares 10
km wide
D. Your geographic
"Maidenhead" grid location (e.g., FN31AA) based on your current
latitude and longitude
E2C06
(A)
What
does a "Maidenhead" grid square refer to?
A. A two-degree longitude by
one degree latitude square, as part of a world wide numbering system
B. A one-degree longitude by one degree
latitude square, beginning at the South Pole
C. An antenna made of wire grid used to amplify
low-angle incoming signals while reducing high-angle incoming signals
D. An antenna consisting of a screen or grid
positioned directly beneath the radiating element
E2C07
(C)
During
a VHF/UHF contest, in which band section would you expect to find the highest
level of contest activity?
A. At the top of each band, usually in a
segment reserved for contests
B. In the middle of each band, usually on the
national calling frequency
C. At the bottom of each
band, usually in the weak signal segment
D. In the middle of the band, usually 25 kHz
above the national calling frequency
E2C08
(D)
Which
of the following frequency ranges is reserved by "gentlemen's
agreement" for DX contacts during international 6-meter contests?
A. 50.000 to 50.025 MHz
B. 50.050 to 50.075 MHz
C. 50.075 to 50.100 MHz
D. 50.100 to 50.125 MHz
E2C09
(C)
If you
are in the US calling a station in Texas on a frequency of 1832 kHz and a
station replies that you are "in the window," what does this mean?
A. You are operating out of the band privileges
of your license
B. You are calling at the wrong time of day to
be within the window of frequencies that can be received in Texas at that time
C. You are transmitting in a
frequency segment that is reserved for international DX contacts by
"gentlemen's agreement"
D. Your modulation has reached an undesirable
level and you are interfering with another contact
E2C10
(A)
Why are
received spread-spectrum signals so resistant to interference?
A. Signals not using the
spectrum-spreading algorithm are suppressed in the receiver
B. The high power used by a spread-spectrum
transmitter keeps its signal from being easily overpowered
C. The receiver is always equipped with a
special digital signal processor (DSP) interference filter
D. If interference is detected by the receiver
it will signal the transmitter to change frequencies
E2C11
(D)
How
does the spread-spectrum technique of frequency hopping (FH) work?
A. If interference is detected by the receiver
it will signal the transmitter to change frequencies
B. If interference is detected by the receiver
it will signal the transmitter to wait until the frequency is clear
C. A pseudo-random binary bit stream is used to
shift the phase of an RF carrier very rapidly in a particular sequence
D. The frequency of an RF
carrier is changed very rapidly according to a particular pseudo-random
sequence
E2C12
(C)
What is
the most common data rate used for HF packet communications?
A. 48 bauds
B. 110 bauds
C. 300 bauds
D. 1200 bauds