Instruction manual

FHT-1 • 16

 79. Install C25, 12 pf disc capacitor

(marked 12 or 12K).

 80. Install C17, 2 or 2.2 pf disc capacitor

(marked 2 or 2.2).

 81. Install another resistor test point,

TP2. Select a 1K resistor, R2 (brown-

black-red). Trim back one lead wire to a

length of one quarter inch. Bend this

wire into a small loop as shown. Insert

the resistor into the PC board and hold it

carefully while you solder it to the board.

Nine parts need handmade preparation

before installation in the transmitter RF

stages of your transmitter. We recommend

that you get them ready for installation before

assembling the Driver and Final stages. If

you prefer to proceed with those stages,

winding coils as you go, that's fine too, as

long as you realize that all coil making details are provided

in this section. The wire used for L1, 6, 10, and 12 is the

smaller gauge enameled wire supplied with your kit. We give you plenty but if

you mess up, you can get a whole 50' spool of it from Radio Shack (278-

1341).

 82. Winding L1 and L6 RF chokes (two identical units ): Examine the

two cylindrical ferrite cores provided in the kit. Notice that there are six

holes at either end of these cylinder shaped units, arranged in two

groups of three. Cut 6" of enameled wire and following the drawing,

thread the wire, pulling each turn gently tight. Tin each end with solder

by holding your soldering iron and solder on the wire ends until the

enamel insulation melts away and the copper wire underneath coats

nicely with solder. Tin all the way up to the ferrite core body. Your

finished RF chokes should look like the diagram. Do not install either

part yet.

 83. Winding L10 and L12: Locate the two small black ferrite beads

provided in the kit. Cut 2" of enameled wire and following the drawing,

thread 3 turns through the bead hole, pulling each turn "gently tight." Tin

each end with solder. Tin all the way up to the ferrite core body. Your

finished bead chokes should look like the diagram. Do not install either

part yet.

1/4 in.

L2,7

L 3,4