[NWSA ANTENNA & LINE (A&L) SPECIALTY COMPREHENSIVE] –
QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED
ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST
EXAM UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE TEST
1. During a rooftop antenna installation, a technician notices that the mounting structure is
slightly out of plumb. What should be the technician’s FIRST course of action?
A. Continue installation and adjust the antenna alignment later
B. Install additional coaxial supports to compensate
C. Verify structural tolerances against engineering specifications
D. Ignore the issue if signal levels remain acceptable
════════════════════
Correct Answer: C. Verify structural tolerances against engineering specifications
Rationale:
A mounting structure that is out of plumb can compromise antenna alignment, wind loading,
and long-term structural integrity. The technician must first confirm whether the deviation
exceeds engineering tolerances before proceeding. Continuing installation without verification
creates safety and performance risks.
════════════════════
2. A line crew is preparing to hoist a waveguide section to the top of a communications tower.
Which safety practice is MOST critical before the lift begins?
A. Applying weatherproof tape to all connectors
B. Conducting a pre-lift inspection of rigging equipment
C. Measuring signal attenuation of the waveguide
D. Tightening all grounding clamps
════════════════════
Correct Answer: B. Conducting a pre-lift inspection of rigging equipment
Rationale:
Rigging failures present severe safety hazards during tower work. A pre-lift inspection ensures
slings, pulleys, hooks, and hoists are rated and undamaged before lifting operations begin.
The other tasks are important but do not directly address immediate lifting safety risks.
,════════════════════
3. While troubleshooting excessive VSWR on a newly installed antenna system, which issue is
MOST likely responsible?
A. Improper connector installation
B. Tower grounding resistance below specifications
C. Over-tightened mounting brackets
D. Excessive tower lighting
════════════════════
Correct Answer: A. Improper connector installation
Rationale:
High VSWR commonly results from impedance mismatches caused by faulty connectors,
damaged transmission lines, or poor terminations. Incorrect connector installation can create
reflections within the system. Grounding and lighting issues generally do not directly increase
VSWR.
════════════════════
4. A customer reports intermittent signal loss during periods of high wind. Which component
should be inspected FIRST?
A. Indoor equipment racks
B. Antenna mounting hardware
C. Tower obstruction lighting
D. Power distribution units
════════════════════
Correct Answer: B. Antenna mounting hardware
Rationale:
Wind-related signal interruptions often indicate movement in antenna mounts, loose
hardware, or structural instability. Inspecting mounting hardware first helps identify
alignment shifts or mechanical looseness affecting signal performance.
════════════════════
5. What is the PRIMARY purpose of grounding an antenna system?
A. Improve RF amplification
B. Reduce transmission latency
,C. Prevent harmonic distortion
D. Protect personnel and equipment from electrical faults
════════════════════
Correct Answer: D. Protect personnel and equipment from electrical faults
Rationale:
Grounding protects against lightning strikes, static discharge, and electrical faults that could
injure workers or damage equipment. It is a critical safety and equipment protection measure
in all antenna and line installations.
════════════════════
6. Before climbing a tower, a technician discovers a minor fray on a fall-arrest lanyard. What
should the technician do?
A. Continue climbing if a secondary lanyard is available
B. Tape the damaged section temporarily
C. Remove the lanyard from service immediately
D. Use the lanyard only below 50 feet
════════════════════
Correct Answer: C. Remove the lanyard from service immediately
Rationale:
Any damage to fall protection equipment compromises worker safety and requires immediate
removal from service. OSHA and industry best practices prohibit use of defective fall-arrest
gear regardless of climb height.
════════════════════
7. Which tool is MOST commonly used to verify proper antenna alignment on a microwave
path?
A. Spectrum analyzer
B. Torque wrench
C. Compression tool
D. Fiber cleaver
════════════════════
Correct Answer: A. Spectrum analyzer
Rationale:
, A spectrum analyzer allows technicians to monitor received signal strength and optimize
antenna alignment for microwave systems. Torque wrenches and compression tools are
installation tools, while fiber cleavers are unrelated to RF alignment.
════════════════════
8. A tower owner requires all climbers to maintain 100% tie-off while ascending. What does
this requirement mean?
A. Climbers must remain connected to the structure at all times
B. Climbers must use two independent power sources
C. Climbers may disconnect briefly while repositioning
D. Climbers should tie off only above 100 feet
════════════════════
Correct Answer: A. Climbers must remain connected to the structure at all times
Rationale:
100% tie-off means the worker is continuously attached to an approved anchorage point
during climbing and positioning activities. This minimizes fall exposure throughout the climb.
════════════════════
9. During coaxial cable installation, why is maintaining the manufacturer’s minimum bend
radius important?
A. To reduce tower loading
B. To preserve cable electrical performance and prevent damage
C. To improve grounding conductivity
D. To simplify weatherproofing procedures
════════════════════
Correct Answer: B. To preserve cable electrical performance and prevent damage
Rationale:
Exceeding minimum bend radius can deform the cable geometry, increasing signal loss and
potentially causing permanent damage. Proper bending preserves impedance characteristics
and cable integrity.
════════════════════
10. A technician discovers corrosion inside an RF connector during preventive maintenance.
What is the BEST corrective action?
QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED
ANSWERS | PLUS RATIONALES | GUARANTEED PASS | LATEST
EXAM UPDATE | EXAM PREP | STUDY GUIDE | PRACTICE TEST
1. During a rooftop antenna installation, a technician notices that the mounting structure is
slightly out of plumb. What should be the technician’s FIRST course of action?
A. Continue installation and adjust the antenna alignment later
B. Install additional coaxial supports to compensate
C. Verify structural tolerances against engineering specifications
D. Ignore the issue if signal levels remain acceptable
════════════════════
Correct Answer: C. Verify structural tolerances against engineering specifications
Rationale:
A mounting structure that is out of plumb can compromise antenna alignment, wind loading,
and long-term structural integrity. The technician must first confirm whether the deviation
exceeds engineering tolerances before proceeding. Continuing installation without verification
creates safety and performance risks.
════════════════════
2. A line crew is preparing to hoist a waveguide section to the top of a communications tower.
Which safety practice is MOST critical before the lift begins?
A. Applying weatherproof tape to all connectors
B. Conducting a pre-lift inspection of rigging equipment
C. Measuring signal attenuation of the waveguide
D. Tightening all grounding clamps
════════════════════
Correct Answer: B. Conducting a pre-lift inspection of rigging equipment
Rationale:
Rigging failures present severe safety hazards during tower work. A pre-lift inspection ensures
slings, pulleys, hooks, and hoists are rated and undamaged before lifting operations begin.
The other tasks are important but do not directly address immediate lifting safety risks.
,════════════════════
3. While troubleshooting excessive VSWR on a newly installed antenna system, which issue is
MOST likely responsible?
A. Improper connector installation
B. Tower grounding resistance below specifications
C. Over-tightened mounting brackets
D. Excessive tower lighting
════════════════════
Correct Answer: A. Improper connector installation
Rationale:
High VSWR commonly results from impedance mismatches caused by faulty connectors,
damaged transmission lines, or poor terminations. Incorrect connector installation can create
reflections within the system. Grounding and lighting issues generally do not directly increase
VSWR.
════════════════════
4. A customer reports intermittent signal loss during periods of high wind. Which component
should be inspected FIRST?
A. Indoor equipment racks
B. Antenna mounting hardware
C. Tower obstruction lighting
D. Power distribution units
════════════════════
Correct Answer: B. Antenna mounting hardware
Rationale:
Wind-related signal interruptions often indicate movement in antenna mounts, loose
hardware, or structural instability. Inspecting mounting hardware first helps identify
alignment shifts or mechanical looseness affecting signal performance.
════════════════════
5. What is the PRIMARY purpose of grounding an antenna system?
A. Improve RF amplification
B. Reduce transmission latency
,C. Prevent harmonic distortion
D. Protect personnel and equipment from electrical faults
════════════════════
Correct Answer: D. Protect personnel and equipment from electrical faults
Rationale:
Grounding protects against lightning strikes, static discharge, and electrical faults that could
injure workers or damage equipment. It is a critical safety and equipment protection measure
in all antenna and line installations.
════════════════════
6. Before climbing a tower, a technician discovers a minor fray on a fall-arrest lanyard. What
should the technician do?
A. Continue climbing if a secondary lanyard is available
B. Tape the damaged section temporarily
C. Remove the lanyard from service immediately
D. Use the lanyard only below 50 feet
════════════════════
Correct Answer: C. Remove the lanyard from service immediately
Rationale:
Any damage to fall protection equipment compromises worker safety and requires immediate
removal from service. OSHA and industry best practices prohibit use of defective fall-arrest
gear regardless of climb height.
════════════════════
7. Which tool is MOST commonly used to verify proper antenna alignment on a microwave
path?
A. Spectrum analyzer
B. Torque wrench
C. Compression tool
D. Fiber cleaver
════════════════════
Correct Answer: A. Spectrum analyzer
Rationale:
, A spectrum analyzer allows technicians to monitor received signal strength and optimize
antenna alignment for microwave systems. Torque wrenches and compression tools are
installation tools, while fiber cleavers are unrelated to RF alignment.
════════════════════
8. A tower owner requires all climbers to maintain 100% tie-off while ascending. What does
this requirement mean?
A. Climbers must remain connected to the structure at all times
B. Climbers must use two independent power sources
C. Climbers may disconnect briefly while repositioning
D. Climbers should tie off only above 100 feet
════════════════════
Correct Answer: A. Climbers must remain connected to the structure at all times
Rationale:
100% tie-off means the worker is continuously attached to an approved anchorage point
during climbing and positioning activities. This minimizes fall exposure throughout the climb.
════════════════════
9. During coaxial cable installation, why is maintaining the manufacturer’s minimum bend
radius important?
A. To reduce tower loading
B. To preserve cable electrical performance and prevent damage
C. To improve grounding conductivity
D. To simplify weatherproofing procedures
════════════════════
Correct Answer: B. To preserve cable electrical performance and prevent damage
Rationale:
Exceeding minimum bend radius can deform the cable geometry, increasing signal loss and
potentially causing permanent damage. Proper bending preserves impedance characteristics
and cable integrity.
════════════════════
10. A technician discovers corrosion inside an RF connector during preventive maintenance.
What is the BEST corrective action?
