Ramsey Electronics DA25 manual inches Braid Coaxial Cable, Center Insulation

DA25 DISCONE ANTENNA KIT ASSEMBLY

Although we know that you are anxious to complete the assembly of your an- tenna kit, it is necessary to assemble it in a specific order to insure the proper operation of the finished unit. Try to avoid the urge to jump ahead installing components.

Since you may appreciate some warm-up soldering practice as well as a chance to put some landmarks on the PC board, we’ll first install some of the larger mounting components. This will also help us to get acquainted with the up-down, left-right orientation of the circuit board (can you do that with a circu- lar board?). Look carefully at the component layout diagrams in the manual to help with your assembly.

Use the boxes to check off your progress.

Check all received parts against the parts list. The parts list describes the vari- ous markings that may be found on the kit parts. Carefully sort the parts into small piles, (an empty egg tray does nicely for this purpose) to aid in finding the correct part at the required time.

Enough of that… lets get started!

First we will prepare the coaxial cable for its installation to the circuit board. We need to “break out” the two wire components of the cable. Trim about 3” of the outer insulation from the cable, being careful not to cut through the outer braid of wire. Using a fine pointed tool, carefully “un-braid” about 2 1/4” of the outer conductor and fan out the loose strands of wire. Once this is accomplished, trim back about 2” of the center insulation. Be careful not to cut through the center conductor. You will want to trim about 1 1/2” off of the exposed braid to aid with further installation.

3 inches

Braid

Coaxial Cable

Center Conductor

2 inches

Center Insulation

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