Elecraft KXB3080 User Manual

Page 4

If present, remove the KXB30 module. Remove the KXB30 wires from the KX1 main PCB and clear

the pads on the KX1 main PCB of all solder.

Replace C26 on the KX1 PCB (see Figure 1) as follows:

Remove the existing 120 pF (121) capacitor. It will no longer be used. Clear all the solder from
the pad holes.

Install the 56 pF (56) capacitor supplied with the KXB3080 kit. Form the leads of the new
capacitor as needed to fit. Be sure the capacitor stands no higher than 5/16” (7.9 mm) above the
board. After soldering, trim the leads flush. Save the leads for use as jumpers later.

Replace C1 on the KX1 PCB (see Figure 1) as follows:

Remove the existing 4.7 pF (4.7) capacitor. It will no longer be used. Clear all the solder from the

pad holes.

Install the 15 pF (150) capacitor supplied. Form the leads of the new capacitor as needed to fit. Be

sure the capacitor stands no higher than 5/16” (7.9 mm) above the board. After soldering, trim the
leads flush.

C26

L6 (Partially hidden behind pot)

C27

Figure 1. KX1 PCB Original Component Locations.

Remove molded inductor L7, 4.7 µH (yel-vio-gold) (see Figure 1). It will no longer be used. Clear all

the solder from the pad holes.

Remove capacitor C27, 150 pf (151) (see Figure 1). It will no longer be used. Clear all the solder

from the pad holes.