Elecraft K2 Owner's Manual - Manual (Page 141)

portion of the indicated capacitance range is actually used to cover
each Amateur band segment. VCO frequency can be calculated based on
** Based on an I.F. of 4915 kHz (e.g., 6715 - 4915 = 1800).
Relay pins 5 and 6 are not connected internally.
shown in the RESET position in schematics.
80m K2, K3
= On bottom of PC board.
30m K3, K4
15m K5, K6
12m K6, K7
160m K2
20m K4
17m K5
10m K7
Integrated Circuits
K2 Schematic Key
11915 (subtract)
14915 (subtract)
18915 (subtract)
22915 (subtract)
Special Symbols
Total Cap., pF*
6715 (subtract)
8415 (subtract)
Fixed Cap., pF at band edge**
K13, K14, K15
K13, K14, K15
Transistors
Relay Table
16085 (add)
VCO Freq.
23085 (add)
19975 (add)
W. Burdick
Appendix B
SET Relays
VCO Table
Elecraft
E.Swartz
K14, K15
K13, K15
K13, K15 MPS5179
2SC2166
2SC1969
160m-K1
525-629
325-429
102-131
ZVN4424
PN2222A 2N7000 2N5109
1 of 1
82-111
2N3906
Diodes
Rev. Sht.
55-84
35-64
55-84
35-64
Date
J310
Band
Band
BPF LPF VCO
K11
K11
K13
K15
K12
K10
K10
40m
By
K8
K9
K9
S
G
D E B
C
S
G D
C
B
E
C B E
C
-
1Nxxxx
MV209, 1SV149
CLOCKWISE (8-PIN DIP SHOWN)
PIN 1 AND GOING COUNTER-
COUNT PINS STARTING AT
(DUAL-INLINE PACKAGE)
VOLTAGE REGULATORS
2930T-8, 78XX
PLASTIC DIP
GND
OUT
GND
OUT
GND
IN
IN
1
2
3
4
5
6
7
8
78L05, -06
Jumper
K13, K14 K12
K1
K1, 60m-K1
60m 10165 (subtract) 215-259
5250 kHz used as 60-meter lower band edge (pending U.S. FCC ruling).
K12 K14
K13, K14
NOTE: All relays are single-coil latching type and are
K1 40m
*40m ALT
11915 (subtract)
160m C75 (470)
80m C72 (270)
30m C73+C74 (67)
20m C74 (20)
17m none (0)
15m C73 (47)
12m C74 (20)
10m none (0)
D 10/23/02
C71+C73 (129)
C71+C73 (129)
* This includes capacitance of varactor diodes D23-D26 on all bands, D21-D22
C71 (120)
163-209
154-203
*40m ALT applies if D19-D20 are not installed.
***40m ALT applies if D19-D20 are not installed.
***40m ALT
+60m
+ 60 meters is available only if the K60XV option is installed.
on 80 -160 m, and D19-D20 on 40 and 60 meters (if applicable). Only a
a total inductance of 0.95 µH (T5 in parallel with L30).