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8. Insert the tinned center conductor wire through the P1 hole in the circuit
board. This wire will connect the circuit board assembly to the amplifier sec-
tion of the antenna; it will also connect to the center conductor of the coax-
ial cable. Push until the center insulation of the cable is flush to the circuit
board. Solder from the top side into place. Trim off any excess lead.
9. Gently spread the
trimmed braid to the area
immediately around the
P1 hole. Be sure that the
braid ONLY contacts the
tinned copper ground
plane area. Trim off any
stray wires that may
short-circuit to the adja-
cent mounting rings.
That wasn't so bad, now was it! You've completed the installation of all the
components required for the preamplifier.
10. Identify the small piece of buss wire
supplied with your kit. This wire will con-
nect the circuit board assembly to the
disk section of the antenna. It is part of
the circuit path that connects the disk
element to the center conductor of the
coaxial cable through the pre-amplifier
stage. Insert through the bottom side of
the circuit board through the P2 hole. Ap-
ply a small amount of solder to the top
side of the circuit board, as shown.
11. Using the 3 #6-32 nylon
screws provided, insert them
through the circuit board assem-
bly as shown. Fasten the screws
into place using the #6-32 stand-
offs provided. Be careful no to
over-tighten the nylon parts or
they may shear off.
Now we are getting to what is proba-
bly the most difficult solder connec-
tion of the entire antenna kit! We will
solder the circuit board assembly to
the funnel cone.
Coaxial Cable
Coaxial Cable
DAP25 • 15
Solder Here
Solder Here
Bottom (Copper Plated) side
Solder Point
Bottom (Copper Plated) side
Coaxial Cable
Solder Point
Bottom (Copper Plated) side
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