Elecraft XV Assembly Manual for XV432 MHz User Manual

Page 28

Advertising
background image

- 26 -

Install R24, 68 ohm (68), 2-watts, in the lower left quadrant. Space

it about 1/16” (1.5mm) above the PCB just like you did for the 1-watt
resistors.

Install the following 3-watt resistors above R21 near the center of the

PCB. Space each resistor about 1/16” (1.5 mm) above the PCB just like
you did for the 1-watt resistors.

__R20, 160 ohm (160)

 __R26, 160 ohm (160)

__R27, 160 ohm (160)

Install the 1/4-watt 1% tolerance resistors listed below in the lower

left quadrant of the circuit PCB. Place these and all of the rest of the
resistors directly against the PCB.

__ R35, 5.11k (grn-brn-brn-brn)  __ R31, 15.0k (brn-grn-blk-red)

__ R30, 7.5k (vio-grn-blk-brn)

 __R32, 3.92k (or-wht-red-brn)

Install resistor R41, 100k (brn-blk-yel), 1/4 watt in the lower left

quadrant.

Install the 1/4-watt resistors listed below in the upper left quadrant.

__R1, 10k (brn-blk-org)

 __R11, 1k (brn-blk-red)

Install the 1/4-watt resistors listed below in the upper right quadrant.

__R23, 100k (brn-blk-yel)

 __R6, 240 ohm (red-yel-brn)

Install the 1/4-watt resistors listed below in the lower right

quadrant. Start with R4, which is near the circle for OV1 work
clockwise.

__R4, 5.6k (grn-blu-red)

 __R5, 5.6K (grn-blu-red)

__R34 (on the right edge of the PCB), 100k (brn-blk-yel)
__R25, 56 ohm (grn-blu-blk)

 __R33, 10k (brn-blk-org)

Install the following 1/4-watt resistors at the center of the PCB:

__ R18, 620 ohm (blu-red-brn)  __ R40, 22k (red-red-org)
__ R42, 4.7 ohm (yel-vio-gld)

Install the following 1/4-watt resistors in the lower left quadrant

near the cutout:

__R28, 1k (brn-blk-red)

 __R29, 56 ohm (grn-blu-blk)

Locate the silk-screened space for D5 in the upper right quadrant

of the PCB.

i

Diodes must be oriented correctly. A black band around the

diode indicates the cathode end. Install each diode so the cathode end
goes to the square solder pad and the band is oriented to match the
silk-screened outline (see Figure 16 below). If a diode has more than
one band, the widest band indicates the cathode end.

Figure 16. PCB Diode Orientation Guides. The cathode always

goes to the square solder pad on the PCB.

Advertising