Ramsey Electronics PA1 Manuel D’Utilisation
PA-1
• 8
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5b. Tack-solder C1, one of the Mica compression trimmer capacitors,
using enough heat for a solid, good connection.
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6. Install C3, the other compression trimmer, just like C1.
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7a. Bend the leads of C2, the round trimmer capacitor, at right angles so
that it can also sit in a level and flat position. The two leads at one end go
to the ground plane, and the single lead goes to the pad with C1.
to the ground plane, and the single lead goes to the pad with C1.
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7b. Install C2.
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8. Install C4, just like C2. Now that you are accustomed to how easy good
tack-soldering can be, and you can see some finished work on your PC
board, this is a good time to begin making and installing the three coils and
RF Choke.
board, this is a good time to begin making and installing the three coils and
RF Choke.
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9a. Cut a 1" length of #18 tinned bare wire and form it as shown, making a
gentle loop around a tool handle.
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9b. Install L1 using a pair of needle-nose
pliers to hold it as you solder it in place. Let
one end cool before soldering the other.
one end cool before soldering the other.
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10a. Use another length of #18 tinned bare
wire to make a 1-turn 1/4"-diameter coil. Spread the turn itself to 1/4" and
trim the leads to approximately 1/4". Bend the ends as needed so that the
coil sits in position as shown on the board.
trim the leads to approximately 1/4". Bend the ends as needed so that the
coil sits in position as shown on the board.
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10b. Install L2 the same way as you did with L1 in step 9b.
L2 top
L2 side view
L1 from 1"inch of bare wire