2. Methods



2.1 Equipment List


Item no.
Item name
Item Quantity
1
2 Speaker (in FK711 Walky Talky 27 MHz (FB07))
1
2
6 AA Battery Holder
2
3
Batteries
12
4
Resistors (in FK711 Walky Talky 27 MHz (FB07))


Colour resistor value
10


Item no.
Item name
Item Quantity
1
2 Speaker (in FK711 Walky Talky 27 MHz (FB07))
2
2
6 AA Battery Holder
2
3
Batteries
12
4
Resistors (in FK711 Walky Talky 27 MHz (FB07))


Colour resistor value below (4a)
10
4 (a)
Brown, Black, Red, Gold = v
1, 0, *100
1000


Orange, Orange, Yellow, Gold = v
3, 3, *10 000
330 000


Brown Green Brown Gold = v
1, 5, *10
150


Orange, Orange Orange Gold = v
3, 3, *1 000
33 000


Green Blue Red Gold = v
5, 6, *100
5600


Brown Black Orange Gold = v
1, 0, *1 000
10 000


Orange Orange Orange Gold = v
33 000


Yellow Violet Brown Gold = v
4, 7, *10
470


Red, Violet, Black, Gold
2, 7, *1
27


Green, Blue, Red, Gold = v
5, 6, *100
5600

20 (2 SETS OF EACH RESISTOR IN COLUMN 2)
5.
Coil Tank
2
6.
Tactile Switch
2
7.
Output Transformer
2
8.
Transistor
4
9.
Electrolytic Capacitors
4
10.
Ceramic Capacitors16











2.2 Diagrams of experimental setup  


IMG_4840.JPG
FIGURE 1 : EXPERIMENTAL SETUP (2 of these experimental setup)


Screenshot 2016-03-06 15.24.14.png
FIGURE 2 : IMAGE OF CIRCUIT SETUP


2.3 Procedures


The procedures are as follows:


  1. We laid out all the materials and sorted the materials in the pack according to what they were eg, resistors, capacitors etc.
  2. We then borrowed a soldering kit to solder the components of the circuit onto the circuit board as well as a smoke absorber so that smoke from the soldering iron will be absorbed.
  3. We soldered on the coil tank, the tactile switch, the speaker and the output transformer onto the circuit board.
  4. We then soldered both the electrolytic capacitors and the ceramic capacitors as well as the transistors following the circuit manual
  5. We then found out the resistor values of each resistor so as to be able to put these resistors at the correct place.
  6. Since we already knew the values of each resistor, we soldered them on according to their respective values, ensuring that the values are correct as if the resistors are placed wrongly, it may affect the overall result that we get.
  7. We then soldered on the battery holder
  8. We then inserted 6 AA batteries
  9. Repeat steps 1 to 8 again


2.4 Risk Assessment and Management  


Risk
Assessment
Management
Injuring ourselves while soldering
High
While soldering, We should be careful and focused so that there will be less chance to injure ourselves.
While soldering, if we are not careful when doing so, a fire may occur.
Low
We should listen to the instructions of our teacher while we are soldering and do not be fidgety and touch all the items and run around as it may cause chemicals to spill and a chance to cause fire.
The stripped audio cable attached to batteries may cause a slight shock
Medium
We must be aware of the materials that we are using and ensure that we do not touch the ends of wire when connected to a power source/battery.
Lead fumes are poisonous and if it inhaled, may cause lung illnesses.
High
We should use the smoke absorber and carry out the experiment in open air and not enclosed environemnt


2.5 Data Analysis


Experiment
Tries
Success?
Details
1
A

100m (Sunny)

B


2
A

100m (Rainy)

B


3
A

Altitude Test (Sunny)

B


4
A

Altitude Test (Rainy)

B




Table 2.5 (METHOD 1)- shows the method of how we would present our data on a table. This table would be able to tell us whether or not our experiment was able to be a success at the different conditions.


Videos (METHOD 2)- We would also include at least 4 videos when analysing our data. The 4 tests show the results of the testing under 4 different conditions where either the weather or the test becomes the common factor so that we would know the factors if they would have any effect on the result or not. The tests are also very objective as it is very clear what factor we are testing.


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