Turn on thread page Beta
    • Thread Starter
    Offline

    0
    ReputationRep:
    Two ariels are 2.50m apart, and both are receiving the same radio signal with a frequency of 125 MHz. The phase difference between themis measured at 114 degrees. Calculate the path difference between the two ariels.
    The ariel in the previous question which recieves the signal first is directly North of one which recieves the signal slightly later. What are the possible bearings of the transmitter from the recieving ariels? You may assume that the transmitter is many kilometers from the recieving ariels, and therefore that the path of the waves travelling to tue teo recievers are effectively in parrallel when measured in the bicinity of the recieving airiels.
    Online

    20
    ReputationRep:
    A phase difference of 360 deg corresponds to a path difference of 1 wavelength... 180 deg is λ/2 etc. etc.
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Joinedup)
    A phase difference of 360 deg corresponds to a path difference of 1 wavelength... 180 deg is λ/2 etc. etc.
    IM oblivious as to what to do for the second part, i got 0.76 for the path difference but i dont know what to do about the bearing
    Online

    20
    ReputationRep:
    (Original post by WhatTheFluke)
    IM oblivious as to what to do for the second part, i got 0.76 for the path difference but i dont know what to do about the bearing
    the aerials are located with one due north of the other... If the transmitter was to their east or west the path difference would be zero, right?
    so what angle would give the required path difference? Probably it'll help if you sketch a diagram
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Joinedup)
    the aerials are located with one due north of the other... If the transmitter was to their east or west the path difference would be zero, right?
    so what angle would give the required path difference? Probably it'll help if you sketch a diagram
    I did draw a diagram, i still dont know how to work out the actual angle
    Online

    20
    ReputationRep:
    Name:  aerials.jpg
Views: 232
Size:  83.0 KB
    Here's what I did...
    • Thread Starter
    Offline

    0
    ReputationRep:
    (Original post by Joinedup)
    Name:  aerials.jpg
Views: 232
Size:  83.0 KB
    Here's what I did...
    Thank you so much
 
 
 
The home of Results and Clearing

2,263

people online now

1,567,000

students helped last year

University open days

  1. Sheffield Hallam University
    City Campus Undergraduate
    Tue, 21 Aug '18
  2. Bournemouth University
    Clearing Open Day Undergraduate
    Wed, 22 Aug '18
  3. University of Buckingham
    Postgraduate Open Evening Postgraduate
    Thu, 23 Aug '18
Poll
A-level students - how do you feel about your results?
Help with your A-levels

All the essentials

The adventure begins mug

Student life: what to expect

What it's really like going to uni

Rosette

Essay expert

Learn to write like a pro with our ultimate essay guide.

Uni match

Uni match

Our tool will help you find the perfect course for you

Study planner

Create a study plan

Get your head around what you need to do and when with the study planner tool.

Study planner

Resources by subject

Everything from mind maps to class notes.

Hands typing

Degrees without fees

Discover more about degree-level apprenticeships.

A student doing homework

Study tips from A* students

Students who got top grades in their A-levels share their secrets

Study help links and info

Can you help? Study help unanswered threadsRules and posting guidelines

Groups associated with this forum:

View associated groups

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.