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Elecraft XV Assembly Manual for XV432 MHz User Manual

Page 29

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Install D5 (1N4007) in the upper right quadrant. Position it against

the PCB with the banded end of the diode aligned with the banded end of
the PCB outline. Save the excess leads when you clip them.

Sort the small glass diodes by type. If necessary use a strong

magnifier to read the tiny numbers printed on the glass body. Tape each
group to a piece of paper marked by the type number.

1 ea. 1N5235

4 ea. 1N5711

10 ea. 1N4148

Install zener diode D3 (1N5235) in the upper left quadrant of the

PCB near R12. Position it against the PCB with the banded end aligned
with the banded end of the PCB outline.

Install the 1N5711 diodes in the lower right quadrant of the PCB.

Place each diode against the PCB with the cathode band oriented as you
did in the previous steps.

__D7

__D8 __D2 __D18

Install the 1N4148 diodes listed below. Start with D1, which is near

resistor R1 in the upper left quadrant of the PCB and work clockwise
around the PCB to D17 in the lower left quadrant.

__D1

 __D12 __D6 __D9 __D13

__D14

 __D15 __D16

__D4

__D17

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In the following steps you will install molded inductors. These

inductors look much like resistors but the color codes read
differently. The color codes on the inductors read from the center to
the end instead of from the end towards the center like resistors.

Install molded inductor L8, 15

H (brn-grn-blk) in the upper right

quadrant of the PCB.

Install molded inductor L9, 0.47

H (yel-vio-silver) near the

circular outline for OV1 between the upper and lower right quadrants.

Install molded inductor L22, 0.1

H (brn-blk-silver) in the lower

right quadrant.

Install molded inductor Z3, 0.1

H (brn-blk-silver)

in the lower

left quadrant.

Install molded inductor L2, 0.1

H (brn-blk-silver) in the upper

left quadrant.

Install transistor Q6 (PN2222) next to R21 at the center of the

PCB. Orient the transistor as shown by the silk-screened outline on the
PCB.

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Check each capacitor's labeling carefully to ensure the

values agree with the numbers shown in parenthesis.

Install the monolithic capacitors listed below near Q6 at the

center of the PCB.

__C68, .047

F(473)

__C67, .01

F (103)

__C64, .01

F (103)

__C65, .22

F (224)

__C10, .01

F (103)

__C9, .01

F (103)

Install the monolithic capacitors listed below. Start with C38 in

the upper left quadrant and work across the top of the PCB into the
upper right quadrant.

__C38, .01

F (103)

__C29, .047

F(473)

__C37, .01

F (103)

__C35, 10 pF (100)

__C36,

F .01 (103)

__C34, .01

F (103)

__C39, .001

F (102)