***** NOVICE CLASS STUDY GUIDE [ ANTENNAS & FEED LINES PART 1 ] *****
QUESTION NUMBER 1
WHAT IS THE APPROXIMATE LENGTH (IN FEET) OF A HALF-WAVELENGTH DIPOLE ANTENNA FOR 3725 KHZ ?
QUESTION NUMBER 2
WHAT IS THE APPROXIMATE LENGTH (IN FEET) OF A HALF-WAVELENGTH DIPOLE ANTENNA FOR 7125 KHZ ?
QUESTION NUMBER 3
WHAT IS THE APPROXIMATE LENGTH (IN FEET) OF A HALF-WAVELENGTH DIPOLE ANTENNA FOR 21,125 KHZ ?
QUESTION NUMBER 4
WHAT IS THE APPROXIMATE LENGTH (IN FEET) OF A HALF-WAVELENGTH DIPOLE ANTENNA FOR 28,150 KHZ ?
QUESTION NUMBER 5
HOW IS THE APPROXIMATE LENGTH (IN FEET) OF A HALF-WAVELENGTH DIPOLE ANTENNA CALCULATED ?
QUESTION NUMBER 6
WHAT IS THE APPROXIMATE LENGTH (IN FEET) OF A QUARTER-WAVELENGTH VERTICAL ANTENNA FOR 3725 KHZ ?
QUESTION NUMBER 7
WHAT IS THE APPROXIMATE LENGTH (IN FEET) OF A QUARTER-WAVELENGTH VERTICAL ANTENNA FOR 7125 KHZ ?
QUESTION NUMBER 8
WHAT IS THE APPROXIMATE LENGTH (IN FEET) OF A QUARTER-WAVELENGTH VERTICAL ANTENNA FOR 21,125 KHZ ?
QUESTION NUMBER 9
WHAT IS THE APPROXIMATE LENGTH (IN FEET) OF A QUARTER-WAVELENGTH VERTICAL ANTENNA FOR 28,150 KHZ ?
QUESTION NUMBER 10
WHEN A VERTICAL ANTENNA IS LENGTHENED, WHAT HAPPENS TO ITS RESONANT FREQUENCY ?
QUESTION NUMBER 11
WHY DO MANY AMATEURS USE A 5/8 WAVELENGTH VERTICAL ANTENNA RATHER THAN A 1/4 WAVELENGTH VERTICAL ANTENNA FOR THEIR (VHF) OR (UHF) MOBILE STATIONS ?
QUESTION NUMBER 12
WHAT TYPE OF RADIATION PATTERN IS PRODUCED BY A 5/8 WAVELENGTH VERTICAL ANTENNA ?
QUESTION NUMBER 13
WHAT TYPE OF ANTENNA PRODUCES A RADIATION PATTERN WITH MORE OF THE TRANSMITTED SIGNAL CONCENTRATED IN A PARTICULAR DIRECTION THAN IN OTHER DIRECTIONS ?
QUESTION NUMBER 14
WHAT TYPE OF RADIATION PATTERN IS PRODUCED BY A YAGI ANTENNA ?
QUESTION NUMBER 15
APPROXIMATELY HOW LONG (IN WAVELENGTHS) IS THE DRIVEN ELEMENT OF A YAGI ANTENNA ?
QUESTION NUMBER 16
WHAT ARE THE NAMES OF THE ELEMENTS IN A 3-ELEMENT YAGI ANTENNA ?
QUESTION NUMBER 17
HOW SHOULD THE ANTENNA ON A HAND-HELD TRANSCEIVER BE POSITIONED WHILE YOU ARE TRANSMITTING ?
QUESTION NUMBER 18
WHY SHOULD YOU ALWAYS LOCATE YOUR ANTENNAS SO THAT NO ONE CAN COME IN CONTACT WITH THEM WHILE YOU ARE TRANSMITTING ?
QUESTION NUMBER 19
YOU ARE GOING TO PURCHASE A NEW ANTENNA FOR YOUR (VHF) OR (UHF) HAND-HELD RADIO. WHICH TYPE OF ANTENNA IS THE BEST CHOICE TO PRODUCE A RADIATION PATTERN THAT WILL BE LEAST HAZARDOUS TO YOUR FACE AND EYES ?
QUESTION NUMBER 20
WHAT IS A COAXIAL CABLE ?
QUESTION NUMBER 21
WHAT KIND OF ANTENNA FEED LINE IS CONSTRUCTED OF A CENTER CONDUCTOR ENCASED IN INSULATION WHICH IS THEN COVERED BY AN OUTER CONDUCTING SHIELD AND WEATHERPROOF JACKET ?
QUESTION NUMBER 22
WHAT ARE SOME ADVANTAGES OF USING COAXIAL CABLE AS AN ANTENNA FEED LINE ?
QUESTION NUMBER 23
WHAT COMMONLY-AVAILABLE ANTENNA FEED LINE CAN BE BURIED DIRECTLY IN THE GROUND FOR SOME DISTANCE WITHOUT ADVERSE EFFECTS ?
QUESTION NUMBER 24
WHEN AN ANTENNA FEED LINE MUST BE LOCATED NEAR GROUNDED METAL OBJECTS, WHICH COMMONLY-AVAILABLE FEED LINE SHOULD BE USED ?
QUESTION NUMBER 25
WHAT IS PARALLEL-CONDUCTOR FEED LINE ?
QUESTION NUMBER 26
HOW CAN (TV)-TYPE TWIN LEAD BE USED AS A FEED LINE ?
QUESTION NUMBER 27
WHAT ARE SOME ADVANTAGES OF USING PARALLEL-CONDUCTOR FEED LINE ?
QUESTION NUMBER 28
WHAT ARE SOME DISADVANTAGES OF USING PARALLEL-CONDUCTOR FEED LINE ?
QUESTION NUMBER 29
WHAT KIND OF ANTENNA FEED LINE IS CONSTRUCTED OF TWO CONDUCTORS MAINTAINED A UNIFORM DISTANCE APART BY INSULATED SPREADERS ?
QUESTION NUMBER 30
A CERTAIN ANTENNA HAS A FEED-POINT IMPEDANCE OF 35 OHMS. YOU WANT TO USE A 50-OHM-IMPEDANCE COAXIAL CABLE TO FEED THIS ANTENNA. WHAT TYPE OF DEVICE WILL YOU NEED TO CONNECT BETWEEN THE ANTENNA AND THE FEED LINE ?
QUESTION NUMBER 31
A CERTAIN ANTENNA SYSTEM HAS AN IMPEDANCE OF 1000 OHMS ON ONE BAND. WHAT MUST YOU USE TO CONNECT THIS ANTENNA SYSTEM TO THE 50-OHM OUTPUT ON YOUR TRANSMITTER ?
QUESTION NUMBER 32
THE WORD BALUN IS A CONTRACTION FOR WHAT PHRASE ?
QUESTION NUMBER 33
WHERE WOULD YOU INSTALL A BALUN IF YOU WANTED TO FEED YOUR DIPOLE ANTENNA WITH 450-OHM PARALLEL-CONDUCTOR FEED LINE ?
QUESTION NUMBER 34
WHERE MIGHT YOU INSTALL A BALUN IF YOU WANTED TO FEED YOUR DIPOLE ANTENNA WITH 50-OHM COAXIAL CABLE ?
QUESTION NUMBER 35
A FOUR-ELEMENT YAGI ANTENNA IS MOUNTED WITH ITS ELEMENTS PARALLEL TO THE GROUND. A SIGNAL PRODUCED BY THIS ANTENNA WILL HAVE WHAT TYPE OF POLARIZATION ?
QUESTION NUMBER 36
A FOUR-ELEMENT YAGI ANTENNA IS MOUNTED WITH ITS ELEMENTS PERPENDICULAR TO THE GROUND. A SIGNAL PRODUCED BY THIS ANTENNA WILL HAVE WHAT TYPE OF POLARIZATION ?