B-006-03: Popular antenna feed line and coaxial connector types
B-006-03-01:
Why does coaxial cable make a good antenna feed line?
It is weatherproof, and its impedance matches most amateur antennas
It is weatherproof, and its impedance is higher than that of most amateur antennas
It can be used near metal objects, and its impedance is higher than that of most amateur antennas
You can make it at home, and its impedance matches most amateur antennas
B-006-03-02:
What is the best antenna feed line to use, if it must be put near grounded metal objects?
Coaxial cable
Ladder-line
Twisted pair
Twin lead
B-006-03-03:
What are some reasons not to use parallel-conductor feed line?
It does not work well when tied down to metal objects, and you must use an impedance-matching device with your transceiver
You must use an impedance-matching device with your transceiver, and it does not work very well with a high SWR
It does not work well when tied down to metal objects, and it cannot operate under high power
It is difficult to make at home, and it does not work very well with a high SWR
B-006-03-04:
What common connector usually joins RG-213 coaxial cable to an HF transceiver?
A PL-259 connector
An F-type cable connector
A banana plug connector
A binding post connector
B-006-03-05:
What common connector usually joins a hand-held transceiver to its antenna?
A BNC connector
A PL-259 connector
An F-type cable connector
A binding post connector
B-006-03-06:
Which of these common connectors has the lowest loss at UHF?
A type-N connector
An F-type cable connector
A BNC connector
A PL-259 connector
B-006-03-07:
If you install a 6 metre Yagi antenna on a tower 50 metres from your transmitter, which of the following feed lines is best?
RG-213
RG-174
RG-59
RG-58
B-006-03-08:
Why should you regularly clean, tighten and re-solder all antenna connectors?
To help keep their resistance at a minimum
To keep them looking nice
To keep them from getting stuck in place
To increase their capacitance
B-006-03-09:
What commonly available antenna feed line can be buried directly in the ground for some distance without adverse effects?
Coaxial cable
75 ohm twin-lead
600 ohm open-wire
300 ohm twin-lead
B-006-03-10:
When antenna feed lines must be placed near grounded metal objects, which of the following feed lines should be used?
Coaxial cable
300 ohm twin-lead
600 ohm open-wire
75 ohm twin-lead
B-006-03-11:
TV twin-lead feed line can be used for a feed line in an amateur station. The impedance of this line is approximately:
300 ohms
600 ohms
50 ohms
70 ohms
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