Elecraft KPA100UPKT Errata - Manual

Page 1
E L E C R A F T K P A 1 0 0 U P G R A D E I N S T R U C T I O N S
E R R A T A
R e v . A - 6 , N o v e m b e r 9 , 2 0 0 7
T H E S E M A N U A L C O R R E C T I O N S M U S T B E M A D E
B E F O R E Y O U B E G I N A S S E M B L Y O R Y O U R K P A 1 0 0
M A Y N O T F U N C T I O N C O R R E C T L Y
1. Page 2, Parts List: Change the description of resistors R4 and R33 to 1/4 watt.
2. Page 2, Parts List: Change the part number of R19, R20, Resistor, 1.6 ohm 2W, to E500177.
3. Page 2, Parts List: Add the following parts to the table:
Reference Designator Description Qty Part No.
C31 Cap., .22µF (“µ22J63”) 63V 1 E530295
C71 Cap., .0018 µF ("182"), 5%, 200V mono, 0.2" LS 1 E530104
C72 Cap., .01 µF ("103"), 5%, 50V mono, 0.1" LS 1 E530019
C80, C81 Cap., .0047 µF ("472"), 10%, 100V disc, 0.25" LS 2 E530102
X1 Crystal, 18.432 MHz, low profile ("S184ECSL") 1 E660019
4. Page 4, Note at top of page: Delete “Proceed directly to Part III if these changes have been made.
Otherwise follow the procedure below to make the changes”.
5. Page 4, Figure 2: Cut out the new figure 2 below and paste it over figure 2 in the manual.
R39 - 22 Ω
C81 - 4700 pF
C80 - 4700 pF
R23 - Jumper
R22 - 300 Ω
L18 - Jumper
R38 - 22 Ω
C82 - Removed
R20 - 1.6
See Note Above Ω
R19 - 1.6
See Note Above Ω
NOTE: Replace R19 and R20 even if you
already have the correct value resistors
installed. The resistors supplied have
low-inductance properties required
for your KPA100 to operate correctly.
Figure 2. Input and Feedback Circuit Component Changes.
6. Page 4: Add the following step at the bottom of the page: (Do not cover up the existing steps on the page.
Cut out this step and attach it by one edge so you can lift it to read the existing steps under it. )
Verify that C80 and C81 are 4700 pF. Normally the capacitor values will be shown as (472). If not or
you can’t see the values, replace them with the capacitors supplied.