Ten things you didn't know about RF.

Description

Quiz on Ten things you didn't know about RF., created by Wayne Holmes on 31/07/2014.
Wayne Holmes
Quiz by Wayne Holmes, updated more than 1 year ago
Wayne Holmes
Created by Wayne Holmes over 10 years ago
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Resource summary

Question 1

Question
A portable antenna has a gain of between 0 and -9dBi
Answer
  • True
  • False

Question 2

Question
A repeater installed on top of a building provides coverage to mobile radio users for about 100km. The power on this repeater is set at 25W. Increasing the power to 50W will increase the coverage for these users.
Answer
  • True
  • False

Question 3

Question
Using a duplexer will help filter out inference on a high-site?
Answer
  • True
  • False

Question 4

Question
VHF will always provide better coverage than UHF?
Answer
  • True
  • False

Question 5

Question
A new Motorola two-way radio does not require alignment.
Answer
  • True
  • False

Question 6

Question
An antenna which has 9dBi gain is better than a similar antenna which has 6dBd gain.
Answer
  • True
  • False

Question 7

Question
Installing a repeater on top of a mountain or building does not always provide the best coverage?
Answer
  • True
  • False

Question 8

Question
Adding PL will not solve interference problems on a repeater which uses carrier squelch.
Answer
  • True
  • False

Question 9

Question
It is okay to use nickel-plated nuts and bolts on an Aluminium mast.
Answer
  • True
  • False

Question 10

Question
You have a site with four repeaters in the same frequency band. It is better to use separate antennas and duplexers since the losses will be minimal, and the costs low, when compared to other options.
Answer
  • True
  • False
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