Ramsey Electronics Treasure finder TF-1 Instruction Manual page 14

43. Install C14, .1uF disc capacitor (marked .1 or 104).
44. Install R10, 120 ohm (brown-red-brown).
45. Install the 9V battery connector to the "RED" and "BLK" holes,
respectively.
46. Install the 9V battery clip using a scrap component lead to hold it on
the PC board. Once the leads are soldered on the solder side of the PC
board, you can solder the component lead to the bottom of the battery
clip for better mechanical stability.
Whew! That's about it for the main circuit board assembly. Take a few
minutes now to double check your work, especially the placement of the
polarized and orientation specific components. The next time we visit this
board we'll be ready to energize the circuit, so this is your last chance to "get
it right the first time" and avoid timely circuit troubleshooting. Remember that
time spent here can save a lot of time (and expense!) when the unit is initially
turned on.
ASSEMBLY INSTRUCTIONS FOR THE SEARCH COIL
It time to get that all important search coil "wound up". Here's some
instructions for getting it done.
1. It is now time to start winding your magnet wire through the shield.
Hang up the "Do Not Disturb " sign, or mark down as you accomplish
each complete turn through the coil. It is extremely important that you do
not scrape the enamel coating off the wire when passing it through the
loop shield. When you complete the first pass through the coil shield,
leave yourself a few inches of wire for interconnection to the coaxial
cable. Taking the other end of
the coax, continue threading
the wire back through the coil
shield for 21 turns (a total of
22 turns). When you finish up
rolling your own coil, leave
yourself a few inches on the
other end, as well. Next up
we'll prepare to connect our
length of coaxial cable to the
search coil and the previously
constructed circuit board. This
is the fun part. We get to
piece together the PVC
sections of pipe to begin
Wire end
22 "turns" through the loop shield
Wire end
TF1 • 14
LOOP SHIELD