Elecraft K60XV Manual User Manual
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Install trimmer capacitors C1 and C2 on the bottom side, aligning the flat side of each trimmer with the
flat side of its component outline. (These trimmers will be adjusted from the top side of the board via the
provided holes.) Make sure the trimmers are seated flat against the board, then solder.
Sort all of the remaining capacitors by value, using a magnifying glass if necessary to read the values.
Install the capacitors in the order listed below. In one or two cases you may have to form the leads to
fit the provided pad spacing on the PC board. Note: Seat each capacitor as far down against the board as it
will go, but no farther. Some lead length may remain exposed due to bends in the leads or epoxy coating.
This will not affect performance.
__ C6, 4.7 pF (alt.: 5 pF)
__ C5, 2.2 pF (alt.: 2 pF)
__ C3 and __ C4, 47 pF ("47" or "470")
__ C10 and __ C12, .001 µF ("102")
__ C7, __ C8, __ C9, __ C11, __ C13, __ C14, __ C15, and __ C16, .01 µF ("103")
Install ceramic resonator Z1, which looks like a capacitor with three leads.
Install the socket for U1 (18 pins). Orient the notched end of the socket with the notched end of the
PCB outline for U1. To ensure that the socket is seated flush against the PCB, solder just two pins, then
turn the board over and examine the socket closely. If it isn't flat, re-heat each pin and press down on the
socket (it should drop into place). Then solder the remaining pins.
Use a discarded component lead to form a U-shaped jumper, and install it on the top side of the board
at the location near J1 marked with a ground symbol. The installed height of the jumper should be no more
than 1/8" (3 mm).
i
Before handling transistors or ICs in the following steps, put on an anti-static wrist
strap or touch a grounded surface.
Install transistor Q1 (2N3906), orienting the flat side as indicated by its PC board outline. The
transistor must be seated close to the board, with no more than about 1/8" (3 mm) of lead length exposed.
Install Q2 (PN2222A) and Q3 (2N7000) in the same manner as Q1.
Carefully straighten the leads of the 8-pin integrated circuit, U2 (LM358), using the method shown in
Figure 4-9 of the K2 owner's manual.
Install U2. The notched or dimpled end of the IC must be oriented toward the notched end of its
component outline.
Straighten the pins of U1 (PIC16C621A).
Install U1 in its socket, with the notched or dimpled end of the IC oriented toward the notched end of
the socket and the "U1" label on the PC board.
Examine U1's pins carefully, looked for bent pins or pins that are not inserted into the socket.
Note: A new RoHS compliant surface mount version of the PIN diodes used at D1 and D2 is supplied pre-
installed on tiny printed circuit. Install the new part as follows.