Elecraft KPA100MODKT - Manual (Page 2)

2
Reinstall the PC board and standoffs. Follow the instructions on page 40 of the KPA100 manual to be certain you
reinstall the hardware correctly. The instructions regarding Q1-Q2 hardware are especially important.
If you've purchased a KPA100 firmware upgrade, install the new IC at U1 now (16F872).
Figure 1
If you've purchased a KPA100 shield kit, assemble and install the new shield now using the supplied instructions.
Otherwise, reinstall the original shield. Note: Your KPA100 shield upgrade kit may have included fabrication of the
solder lug ground strap. In that case, skip the next four steps.
The solder lugs will be used to form a ground strap between the shield and rear panel as shown in Figure 2. Attach
one lug to the shield screw near the SO239 connector. The lug replaces the original lock washer.
Attach the second lug to the upper-right of the four screws holding the SO239 connector to the rear panel. This lug
also replaces the original lock washer.
Using long-nose pliers, fold the second lug down at a 90-degree angle so that it overlays the first as shown below.
Trim the excess length off the end of the first lug. Solder the two lugs together.
Tighten the hardware to ensure good contact at both ends of the ground strap.
Turn the KPA100 assembly over carefully and install it in the K2, re-connecting all internal cables. Make sure the
left and right spring clips are touching the side panels, and that none of the interconnecting cables are pinched.
Turn the K2 on. Follow the Temperature Calibration (CAL tPA) steps on page 45 of the KPA100 manual.
J7
J2
E1
Figure 2