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+T7C – Antenna and transmission line measurements and troubleshooting: measuring SWR, effects of high SWR, causes of feed line failures; Basic coaxial cable characteristics; Use of dummy loads when testing 
+
+- [[T7C01]] (A)
+What is the primary purpose of a dummy load? #card
+	- A. To prevent transmitting signals over the air when making tests
+	- B. To prevent over-modulation of a transmitter
+	- C. To improve the efficiency of an antenna
+	- D. To improve the signal-to-noise ratio of a receiver
+--
+- [[T7C02]] (B)
+Which of the following is used to determine if an antenna is resonant at the desired operating frequency? #card
+	- A. A VTVM
+	- B. An antenna analyzer
+	- C. A Q meter
+	- D. A frequency counter
+--
+- [[T7C03]] (B)
+What does a dummy load consist of? #card
+	- A. A high-gain amplifier and a TR switch
+	- B. A non-inductive resistor mounted on a heat sink
+	- C. A low-voltage power supply and a DC relay
+	- D. A 50-ohm reactance used to terminate a transmission line 
+--
+- [[T7C04]] (C)
+What reading on an SWR meter indicates a perfect impedance match between the antenna and the feed line? #card
+	- A. 50:50
+	- B. Zero
+	- C. 1:1
+	- D. Full Scale
+--
+- [[T7C05]] (A)
+Why do most solid-state transmitters reduce output power as SWR increases beyond a certain level? #card
+	- A. To protect the output amplifier transistors
+	- B. To comply with FCC rules on spectral purity
+	- C. Because power supplies cannot supply enough current at high SWR
+	- D. To lower the SWR on the transmission line
+--
+- [[T7C06]] (D)
+What does an SWR reading of 4:1 indicate? #card
+	- A. Loss of -4 dB
+	- B. Good impedance match
+	- C. Gain of +4 dB
+	- D. Impedance mismatch
+--
+- [[T7C07]] (C)
+What happens to power lost in a feed line? #card
+	- A. It increases the SWR
+	- B. It is radiated as harmonics
+	- C. It is converted into heat
+	- D. It distorts the signal
+--
+- [[T7C08]] (D)
+Which instrument can be used to determine SWR? 
+	- A. Voltmeter
+	- B. Ohmmeter
+	- C. Iambic pentameter
+	- D. Directional wattmeter
+--
+- [[T7C09]] (A)
+Which of the following causes failure of coaxial cables? #card
+	- A. Moisture contamination
+	- B. Solder flux contamination
+	- C. Rapid fluctuation in transmitter output power
+	- D. Operation at 100% duty cycle for an extended period
+--
+- [[T7C10]] (D)
+Why should the outer jacket of coaxial cable be resistant to ultraviolet light? #card
+	- A. Ultraviolet resistant jackets prevent harmonic radiation
+	- B. Ultraviolet light can increase losses in the cable’s jacket
+	- C. Ultraviolet and RF signals can mix, causing interference
+	- D. Ultraviolet light can damage the jacket and allow water to enter the cable
+--
+- [[T7C11]] (C)
+What is a disadvantage of air core coaxial cable when compared to foam or solid dielectric types? #card
+	- A. It has more loss per foot
+	- B. It cannot be used for VHF or UHF antennas
+	- C. It requires special techniques to prevent moisture in the cable
+	- D. It cannot be used at below freezing temperatures