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DSW-II-80 Transceiver kit -Instructions                                 

D. Benson, K1SWL

   02/12/04           p. 

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The 

DSW-II-80

Transceiver Kit

Welcome! The DSW-II manual departs from the traditional Small Wonder Labs instructions. These pages contain the

information necessary for a reasonably-experienced builder to complete this kit successfully. If you're new to kit-

building, please go on-line and check out:

http://smallwonderlabs.com/DSWhelps.pdf

That URL contains a Supplement document (in .pdf  format) with component identification tips, technical description,

basic soldering instruction and troubleshooting information.  Why this approach? You've seen most of this information

in my earlier manuals-  print only the portion you need and save a tree!

This document itself is kept current at  

http://smallwonderlabs.com/DSW80_Manual.pdf

Table of Contents:

Description

Page

Parts list

2-3

Schematic- Transmitter/Local Oscillator

4

Schematic- Receiver

5

Pictorial Drawing

6

Assembly Instructions

7-9

Alignment

11

Operating the DSW-II

12

Addendum

13

Summary of Contents for DSW-II-80

Page 1: ...heck out http smallwonderlabs com DSWhelps pdf That URL contains a Supplement document in pdf format with component identification tips technical description basic soldering instruction and troublesho...

Page 2: ...C3 C15 C28 30 C101 102 C108 111 C118 121 122 01 uF disk cap 103 ceramic 2 2 C114 C115 01 uF 0805 SMT cap Pre installed 2 C14 C18 033 uF poly cap 333 or 333K 7 1 C13 C31 C103 C106 C107 116 C120 1 uF mo...

Page 3: ...Audio Amplifier 8 pin DIP IC 1 1 U4 78L05A pre installed 1 1 U5 25 000 Mhz Oscillator pre installed 1 1 U6 AD9835BRU DDS IC pre installed 1 1 U7 PIC16C622A microcontroller preprogrammed pre installed...

Page 4: ...4 01 100 30V A 500 01 10K 10K LT1252 78 L04 01 51 470 6 5 4 8 9 p o J5 RIT INDICATOR 7 10 GND DAUGHTERBOARD 10 uF 1 01 R1 RIT Ph A TUNE Ph B TUNE 4 8 9 10 S2 S3 GRN R2 C1 C2 1 2 3 R1 R3 1 5K ohm 01 2...

Page 5: ...rnal cap left intact D1 D2 D3 D4 C101 C3 C4 C5 L2 C6 C7 C8 C9 L3 Y1 Y2 Y3 R1 C102 01 C103 R2 C10 C11 Y4 C12 C13 C14 C15 C104 C105 C16 D5 D6 R3 R4 R6 R7 R5 C17 C18 C19 C20 C106 R8 R9 R10 R11 R12 R14 C2...

Page 6: ...L3 22 uH 1 01 033 C15 C13 C14 L1 L2 C4 C3 01 C109 C108 01 01 10 150 C7 PIC16C622A 04 P C107 1 R17 240 25 000M U4 C114 01 R16 3 9K 01 C115 C113 1 1 C112 C24 47 C27 47 15 C26 U6 C28 01 R21 10K D7 R24 22...

Page 7: ...ases to any top side traces Diode Installation Some of the diodes are bent for upright installation on the board Installation polarity is as shown below Be sure to note the orientation of the silkscre...

Page 8: ...the socket matching that of the board silkscreen 27 C17 27 pF disk cap 28 Y1 4 00 MHz crystal Install this component slightly above the board 0 5 to 1 mm to prevent the case from shorting to board tr...

Page 9: ...84 C18 033 uF poly cap 85 Q2 2N7000 This part is static sensitive 86 R11 510K resistor grn brn yellow 87 R10 22K resistor red red orange 88 Q1 2N5485 6 Orient the flat side of this device to match tha...

Page 10: ...nstall the subminiature pushbutton switch at S1 Do not solder this part in place yet 6 Install the subminiature toggle switch at S2 This part may be installed without regard to up down orientation eit...

Page 11: ...e may be adjusted to 800 Hz using Spectragram or DigiPan software and your computer sound card DigiPan select Configure Band and click on Tone Spectrogram www visualizationsoftware com DigiPan see htt...

Page 12: ...the switch upward again turns off RIT and extinguishes the LED When RIT is ON the tuning control affects frequency in 50 Hz steps The transmit frequency does not change when RIT is ON and frequency re...

Page 13: ...ther keying source such as a computer To revert to the internal keyer after Straight Key mode has been selected repeat the Keyer control sequence via the front panel switch and respond to the SK promp...

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