Elecraft W1 - Manual (Page 3)

3
Reference. Designator Description Qty
Part
Number
R15, R21 100K (brn-blk-yel) 1/4W Resistor 2 E500006
R16 10k (brn-blk-org) 1/4W Resistor 1 E500015
R17 5k (502) Trimmer Potentiometer 1 E520009
R18, R22 22K (red-red-org) 1/4W Resistor 2 E500090
R19 3K (org-blk-red) 1/4W Resistor 1 E500169
RP1, RP2 2K (202P) Resistor pack 2 E510031
Q1, Q2, Q3, Q4, Q5, Q6
2N7000 Transistor
i
ESD Sensitive. Take precautions when
handling (see ESD-Sensitive Parts above.)
6 E580002
Q7 2N3904 Transistor 1 E580017
SW1 Switch 1 E640009
T1 Binocular Core 1 E690011
U1, U2
LMC6482 Integrated Circuit
i
ESD Sensitive. Take precautions when
handling (see ESD-Sensitive Parts above.)
2 E600011
U3 LM78L05 Integrated Circuit 1 E600029
U4
Microcontroller PIC16F876A, Programmed
i
ESD Sensitive. Take precautions when
handling (see ESD-Sensitive Parts above.)
1 E610022
X1 Ceramic Resonator, 4MHz (4.00) 1 E660001
Hardware Screw, Pan Head, Black Machine, 4-40 4 E700008
Hardware Lock Washer, Internal Tooth, #4 4 E700010
Hardware Nut, #4-40 4 E700011
Misc. I.C. Socket, 28 Pin 1 E620011
Misc. #28 Enameled Wire for T1 72” E760003
Misc. #18 Teflon® 1 Insulated Wire for T1 6” E760021
Misc. Rubber Foot 4 E700024
Assembly Options
The W1 is designed to operate as a stand-alone unit without an enclosure. Several options are provided in case you want to
build the unit into an enclosure or existing equipment:
1. Your W1 is provided with BNC connectors that mount parallel to the board. Normally these connectors will be
mounted on the top (silk screened) side of the board so that the board rests flat on the supplied rubber feet attached
to the bottom. However if you are building the unit to place in an enclosure of your choice, you may elect to mount
the BNC connectors on the bottom of the board. Also, you may purchase right-angle BNC connectors that also may
be mounted either on the top or the bottom of the board. Suitable connectors are available from Digi-Key
®
( www.digikey.com , part number A32246-ND) or Mouser Electronics ® ( www.mouser.com , part number 571-
2272226).
2. Mounting holes are provided in the board that you may use with your own #4 hardware and spacers as desired
instead of using the rubber feet.
3. If you are going to power your W1 using an external source only, you may choose not to install the battery holder.
4. Transformer T1 may be obtained pre-wound from an Elecraft-approved source. See www.elecraft.com for details.
1 Teflon is a registered trademark of du Pont de Nemours and Company.