Ramsey Electronics FM25A Instruction Manual download pdf (Page 10)

FM25A • 10

RAMSEY "LEARN-AS-YOU-BUILD" ASSEMBLY STRATEGY

As you can see in examining the circuit board and components, there is a bit

more to this kit than just soldering a few parts. So that you don't spend extra

time "troubleshooting" instead of getting on the air, we strongly recommend that

you follow the assembly strategy and step-by-step procedures we provide.

Our strategy in installing parts on our PC board is to install the larger and more

obvious parts such as the connectors and controls. These parts will then act as

"landmarks" so that each additional device installed is seen in relationship to

them, or to others previously installed.

In addition, we'll discuss the purpose of most of the components or groups of

components as we go along. If you are new to the idea of building your own

transmitter, perhaps our explanations will help you understand and learn as we

go along. The assembly sequence will follow the circuit flow from input jacks to

antenna as faithfully as is practical, as part of Ramsey's "Learn-As-You-Build"

kit assembly philosophy.

FM25A ASSEMBLY

Use the boxes to check off your progress.

Check all received parts against the Parts list on page 8 and 9. The parts list

describes the various markings that may be found on the kit parts.

Since you may appreciate some "warm-up" soldering practice as well as a

chance to put some "landmarks" on the FM25A PC board, we'll first install

some "hardware" components, to make the up-down, left-right orientation of the

PC board as clear as possible.

In ALL the following instruction steps, our word "INSTALL" means this:

• Insert the part, oriented correctly, into its correct holes in the PC board.

• If helpful, gently BEND the part's wire leads or tabs to hold it in place, with

the body of the part snugly against the top "component side" of the PC

board.

• SOLDER ALL wires or pins of the part, whether the two wires of a resistor

or all pins of an IC socket.

• Nip or "trim" all excess wires extending beyond each solder connection,

taking care that wire trimmings do not become lodged in PC board solder

connections.

Enough said. . . Let's get building!

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Ramsey Electronics FM25A Instruction Manual Page 10