3

PP3

Battery

Connection plate made of scrap

piece of plain copper clad PCB

under each dipole/screw

Pin or screw to help hold PCB in

place

ENLARGED VIEW

Bend dipole element wire into 3/4 loop and clamp under head of

screw or nut and bolt with washer to cover (with optional spring)

Switch up = DF mode

Switch down = monitor mode

Metal tin

(eg tobacco,

mustard etc)

These two coax

feeders must be

the same length

BNC plug to

receiver

Single wire to link

case to PCB ground

NARC DF100 Casing and final construction

All 3 coax connections:

Core to top hole

Braid to bottom hole

Distance between Dipoles 710mm (approx 29”)

Case Finishing:

• Drill 3 holes for RG58 coax

RG58 is typically 5mm ø

diameter - ideally add grommets.

• Drill 6mmø hole for Toggle

switch (which also holds PCB)