E2C: Contest and DX operating; spread-spectrum transmissions; automatic HF forwarding; selecting an operating frequency
E2C01:
Which of the following is true about contest operating?
Operators are permitted to make contacts even if they do not submit a log
Interference to other amateurs is unavoidable and therefore acceptable
It is mandatory to transmit the call sign of the station being worked as part of every transmission to that station
Every contest requires a signal report in the exchange
E2C02:
Which of the following best describes “self spotting” in regards to contest operating?
The generally prohibited practice of posting one’s own call sign and frequency on a call sign spotting network
The acceptable practice of manually posting the call signs of stations on a call sign spotting network
A manual technique for rapidly zero beating or tuning to a station’s frequency before calling that station
An automatic method for rapidly zero beating or tuning to a station’s frequency before calling that station
E2C03:
From which of the following bands is amateur radio contesting generally excluded?
30 meters
6 meters
2 meters
33 cm
E2C04:
On which of the following frequencies is an amateur radio contest contact generally discouraged?
146.52 MHz
3.525 MHz
14.020 MHz
28.330 MHz
E2C05:
Which of the following frequencies would generally be acceptable for U.S. stations to work other U.S. stations in a phone contest?
14.310 MHz
5405 kHz
50.050 MHz
146.52 MHz
E2C06:
During a VHF/UHF contest, in which band segment would you expect to find the highest level of activity?
In the weak signal segment of the band, with most of the activity near the calling frequency
At the top of each band, usually in a segment reserved for contests
In the middle of each band, usually on the national calling frequency
In the middle of the band, usually 25 kHz above the national calling frequency
E2C07:
What is the Cabrillo format?
A standard for organizing information in contest log files
A method of exchanging information during a contest QSO
The most common set of contest rules
The rules of order for meetings between contest sponsors
E2C08:
Why are received spread-spectrum signals resistant to interference?
Signals not using the spectrum-spreading algorithm are suppressed in the receiver
The high power used by a spread-spectrum transmitter keeps its signal from being easily overpowered
The receiver is always equipped with a digital blanker circuit
If interference is detected by the receiver it will signal the transmitter to change frequencies
E2C09:
How does the spread-spectrum technique of frequency hopping (FH) work?
The frequency of the transmitted signal is changed very rapidly according to a particular sequence also used by the receiving station
If interference is detected by the receiver it will signal the transmitter to change frequencies
If interference is detected by the receiver it will signal the transmitter to wait until the frequency is clear
A pseudo-random binary bit stream is used to shift the phase of an RF carrier very rapidly in a particular sequence
E2C10:
Why might a phone DX station state that he is listening on another frequency?
All of these choices are correct
Because the DX station may be transmitting on a frequency that is prohibited to some responding stations
To separate the calling stations from the DX station
To reduce interference, thereby improving operating efficiency
E2C11:
How should you generally sign your call when attempting to contact a DX station working a “pileup” or in a contest?
Send your full call sign once or twice
Send only the last two letters of your call sign until you make contact
Send your full call sign and grid square
Send the call sign of the DX station three times, the words "this is", then your call sign three times
E2C12:
In North America during low sunspot activity, when signals from Europe become weak and fluttery across an entire HF band two to three hours after sunset, what might help to contact other European DX stations?
Switch to a lower frequency HF band
Switch to a higher frequency HF band
Wait 90 minutes or so for the signal degradation to pass
Wait 24 hours before attempting another communication on the band
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Color key:
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● = Unseen
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● = Weak
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● = Review
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● = Learned
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● = Incorrect answer
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