electric antenna

#1. The ideal length for a Marconi aerial for a frequency of 406 MHz is:

• A36.9 cm
• B35.1 cm
• C17.5 cm
• D18.5 cm

#2. A disadvantage of directivity is:

• Areduced range
• Bsidelobes
• Cphase distortion
• Dambiguity

#3. Which of the following is not an advantage of a slotted antenna (phase array)?

• Areduced sidelobes
• Bimproved resolution
• Creduced power
• Ddirectivity