Elecraft KRC2 Manual - Manual (Page 7)

7
Install the two 33pF ceramic disk capacitors on the top side of the PCB. Note that the lead
spacing for C1 and C2 may be too wide for the holes in the PC board. If so, use a pair of needle-
nose pliers to crush the ceramic ‘flash’ which covers the leads up close to the body of the capacitor
and then re-bend the leads so they fit the available holes and scrape away the crushed flash debris.
__C1, __C2
Install the following 0.1µF (104) capacitors with 0.2” (5.0mm) lead spacing on the top side
of the PCB:
__C13, __C14, __C20, __C26, __C27
Install the following 0.001µF (102) capacitors with 0.2” (5.0mm) lead spacing on the top
side of the PCB:
__C3, __C4, __C5, __C6
Install the following miniature inductors on the bottom side of the circuit board. The
components should be mounted vertically, with one end resting on the pc board and the lead of the
other end bent down into the corresponding solder pad. You should also alternate the orientation
of the RF chokes, with L1 and L3 mounted towards the left and L2 mounted to the right. Then
solder and trim the leads.
__L1 100µH Inductor, (brn-blk-brn)
__L2 100µH Inductor, (brn-blk-brn)
__L3 100µH Inductor, (brn-blk-brn)
Install L4, a 15µH miniature inductor (brn-grn-blk) on the top side of the PCB.
Install C18, a 120pF (121) capacitor, with 0.1” (2.5mm) lead-spacing on the top side of the
PCB.
Install C19, a 56pF (560) capacitor, with 0.1” (2.5mm) lead-spacing on the top side of the
PCB.
Install the following 0.001µF (102) capacitors with 0.2” (5.0mm) lead spacing on the top
side of the PCB:
__C8, __C9, __C10, __C11