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CONSTRUCTION OF THE WEATHER SATELLITE RECEIVER
Sort out all of your parts to begin with, making sure you have all of the parts
required. You can use old egg cartons to hold various parts to make them
easier to find. We will begin building the kit from the back side of the board
where all the jacks will eventually be placed. Make sure to mount parts on the
correct side! You will want to use the parts layout diagram to assist you in
finding where the parts go.
1. Install J4, the power jack. This will be our reference part and will help us
locate where other parts are located on the board.
2. Install C55, a .01uF ceramic capacitor (marked .01, 10n, or 103).
3. We will skip SP1, the speaker buzzer at this time. This will allow us to
mount other parts in this area more easily.
4. Install L6, one of the 10uH inductors (blue-green body with brown-black-
black-silver stripes)
5. Install C42, a .01uF ceramic capacitor (marked .01, 10n, or 103).
6. Install L9, another 10uH inductor like in step 4.
7. Install C46, another .01uF ceramic capacitor (marked .01, 10n, or 103).
8. Install L3, another 10uH inductor.
9. Install C41, another .01uF ceramic capacitor.
10. Install C40, yet another .01uF ceramic capacitor.
11. Install L2, the last of the 10uH inductors.
You have just completed some of the filters that are required to keep the RF
noise generated by computers out of the radio. This helps prevent a noisy
picture and improves reception capability.
12. Install R39, a 10K resistor (brown-black-orange). To
mount as a stand up resistor for best looks, bend the leads so
the resistor stands square to the board before soldering. Keep
it neat!
13. Install Q7, a 2N3904 NPN type transistor. Be sure and mount the flat
side in the same direction as shown on the parts layout.
14. Install Q6, another 2N3904 type transistor (Note previous step).
We have just completed the 'switch' for the tape cassette recorder. Now it is
time to begin working on the actual receiver's PLL and demodulator.
WSR-1A• 11
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