ELECRAFT K 2 Owner's Manual

ELECRAFT K2160-10 MeterSSB/CWTransceiverOwner’s ManualRevision XC, Jan. 25, 1999Copyright  1999 ElecraftAll Rights ReservedThis revision of the K2 Ow

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

99Power Controlrange of the control is about 0 to 12 watts in 0.1–watt steps. Afteradjusting the POWER control, you can send a few CW characters orne

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

11110.Theory of OperationBefore reading this section you should become familiar with the schematicsSystem OverviewThe K2’s modular design allows flexi

K2 Manual 1/24/99 V.XC ©1999 Elecraft

113Co-Processors and the AuxBusswitching is handled by co-processors. There is only one co-processor in thebasic K2, the I/O Controller (IOC). Some op

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

121appears to be incorrectnot be locked (see Operation as well as RFboard Alignment and Test, Part II) Make sure the supply voltage is above 8.5Vfunct

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

Appendix A K2 Front Panel Board Parts ListPicture Ref. Value Description QtyBumpers; rubber, adhesive 1/4"d x 1/16" For front Panel Mountin

Appendix A K2 Front Panel Board Parts ListPicture Ref. Value Description QtyKeycaprectangular, grayBand up/down; S1, S32Keycapsquare, blackRate / Lock

Appendix A K2 Front Panel Board Parts ListPicture Ref. Value Description QtyRP3 10K SIP SIP Resistor Pack 8pin , 4r, ISO; SSB option 0S1, S2, S3, S4,

Appendix A K2 Control Board Parts ListPicture Designators Value Description QTYC22 var,8-50pF Ceramic trimmer 1C1, C33 2.2µF Electrolytic 2C10, C11 C1

Appendix A K2 Control Board Parts ListPicture Designators Value Description QTYJ2 3p Female Audio Filter OPTION 0

Appendix A K2 Control Board Parts ListPicture Designators Value Description QTYP1 6P male To RF Board, J6 1P2 18x2 male 1P3 10x2 male 1P4 5x2 male 0.1

Appendix A K2 Control Board Parts ListPicture Designators Value Description QTYSocket 40 pin socket Socket for Pic16C77 uP 1U1 SA602AN AGC Mixer 1U2 L

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYC1, C2, C9, C17, C26, C27, C37, C38, C39, C49, C57, C64, C77, C79, C80, C81, C

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYC19827 NPO 100v1C20, C24, C73, C20347NPO4C200, C212, C218150 NPO 100v3C21, C23

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYC59, C65, C67, C86, C124, C130, C131, C135, C139, C151, C176, C178, C1850.1Red

K2 Manual 1/24/99 V.XC ©1999 Elecraft

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYD91N34AGermanium. RF Power Detector; 1N270 Also OK; Glass Body1HeatsinkHeatsi

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYHW#4, washer, nylonwasher, nylon, 0.5" diameter; Mounting for T5 - VCO2HW

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYJ9 3p,Female SSB OPTION0Packed in Tube in Main BoxK1, K2, K3, K4, K5, K6, K7,

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYP52p,maleFor Speaker; 0.1"; Locking Ramp; Brown1Q10, Q12, Q17, Q20, Q232N

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYR501.5 ohmDriver Emitter Resistor 1

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYR53, R544.7 ohm2R581801/2W1R594.7K1R6, R8, R891002R60100, POT - TrimmerPA Bias

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYRFC715uHSoleniodal inductor; Green1

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYRP2, RP6100K SIP; 8A3-104G8 Pin SIP,4R ISO, Yellow2RP310K SIP; 8A3-103G8 Pin S

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYU278L06AWC6v Reg. For relays1U3, U9LT1252VFO Buffer; TX Buffer2U4MC145170P1PLL

Appendix AK2 RF Board Parts ListPicture Designators Value DescriptionQTYZ6 TUF-1 MixerMini-circuits Mixer; 4 Pin metal rectangular can.1

K2 Manual 1/24/99 V.XC ©1999 Elecraft

Appendix AK2 Misc. ItemsPicture Designators Value Description QTYCx 10pf For Freq. Probe 1Cx.01Red Monolithic Ceramic Cap; Bypass for external speaker

Appendix AK2 Misc. ItemsPicture Designators Value Description QTYMiscfemale crimp pins for speaker to RF board connector (larger pins for brown shell)

Appendix AK2 Box ContentsDesignatorsValue Description QTYBag, Front Panel Parts1Bag, Control Parts1Bag, RF Parts1Bag, Misc. Parts Includes H/W for all

©1999 Elecraft(S0 through S23 connected to DS1; only S0 and S23 shown)First switch label corresponds to switch TAP,Second label corresponds to switch

©1999 ElecraftNote: Current sense resistor8V Low-Dropout Reg.K2 Control BoardVolt Meter InputQuad, 8-bit DACTo RF Board, J7To RF Board, J8To RF Boar

©1999 ElecraftF r o n t P a n e l B o a r d position. See relay table (sheet 3).Relays are shown in RESET (Vout = 0 to 4.096V)VFO Range Selec

©1999 ElecraftVariable-Bandwidth Crystal Filter N o i s e B l a n k e rS S B A d a p t e rBFO Buffer/AttenuatorD29-D34: MVAM1082nd Xtal FilterPo

©1999 ElecraftNOTE: All relays are single-coil latching typeand are shown in the RESET position.30m K3, K4 15m K5, K6 12m

Power Amplifier (PA)12:8, FT37-439:3, FT37-43PA Bias SetK2 RF BoardPRE-DRIVERPre-DriverW. BurdickElecraftE.Swartz2SC2166(Sh. 3)(Sh. 3)2SC19692SC1969P

K2 Appendix C © 1999 Elecraft. All rights reserved.LOW-PASSFILTERSPOWERAM P(10W)BAND-PASSFILTERST-RCRYSTALFILTERSELECRAFTK2 BLOCKDIAGRAMW. Burdick

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

K2 Manual 1/24/99 V.XC ©1999 Elecraft

94VFO Linearization (CAL PLL)16and must be used once on each band. nonlinear on bands that are not yet calibrated. You can repeat CAL(One reason you m

K2 Manual 1/24/99 V.XC ©1999 Elecraft

96§ hold RCL (memory recall); see below§ use direct frequency entry; see below

K2 Manual 1/24/99 V.XC ©1999 Elecraft