Heathkit HW 9 Manual 2

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for the

DELUXE QRP
cw TRANSCEIVER
Model HW-9

HEATH COMPANY ' BENTON HARBOR, MICHIGAN

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____________________--- Heathkit®

TABLE OF CONTENTS

Introduction . .p ............................. 3 Final Assembly ........................... 85
Unpacking ................................ 4 Installation and Operation ................. 86
Rear Panel Connections ................ 86
Assembly Notes ........................... 5 Front Panel Controls ................... 88
Oscillator Circuit Board ..................... 9 In Case of Difficulty ...................... 89
Parts List ............................. 9 Visual Checks ........................ 89
Step-by-Step Assembly ................. 13 Precautions for Troubleshooting ......... 90
Checking Transistors and Diodes ........ 90
T/R Circuit Board ......................... 27 Troubleshooting Charts ................. 91
Parts List ............................ 27
Step-by-Step Assembly ................. 31 Specifications ............................ 95
Chassis .................................. 49 Circuit Description ........................ 98
Parts List ............................ 49
Step-by-Step Assembly ................. 51 Circuit Board X-Ray Views
.............. Illustration Booklet, Page 37
Initial Tests ..... , ......................... 73
Resistance Tests ....................... 73 Semiconductor Identification Charts ........ 102
Alignment ............................... 77 Schematic ........................... Fold-in
Initial Control Settings ................. 77
HFO Alignment --------------------- 78 Warranty .................. Inside front cover
VFO Alignment ....................... 79
BFO Alignment °°°°°°°°°°°°°°°°°°°°°° 79 Customer Service ............ Inside rear cover
Mixer Filter Alignment ................ 80

T/R Board Adjustments .......... g ...... 81

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Heathkit®

( ) P101: 5-pin plug. Start the shorter pins into CIRCUIT BOARD CHECKOUT
the circuit board holes. Then push the plug

dOWD tight against the CiTCUit board and solder Carefully inspect the foil side of the circuit board
the pins to the foil. for the following most-commonly-made errors:
[ ] R173: 500 0 COIIIIO1 [#10-913l- ( ) Unsoldered connections. NOTE: There are

several unused holes in the circuit board.
NOTE: When you install a crystal, match the three

leads with their corresponding holes in the circuit ( ] p001. solder connections.
board. Then push the crystal down tight against the

circuit board, solder the leads to the foil, and cut ( ) Solder bridges between foil patterns (See Page
off the excess lead lengths. ' 15).

( ) Protruding leads which could touch each
other or the chassis when the circuit board is
installed later.

Refer to the illustrations where parts where installed
as you make the following visual checks:

{ ) Transistors for the pr0per type and installa-
tion.

[ ) Diodes for the proper type and installation.

( ) Y101: 13.330 MHz crystal (#404-664).

( ) Y102: 21.830 MHz crystal (#404-665).

[ ) Skip Y103.

[ ) Y104: 23.330 MHz crystal (#404-337).

[ ] Skip Y105.

[ ) Y106: 35.330 MHz crystal (#404-339).

( ) Skip Y107 and Y108.

[ ) Y109:8.8314 MHz crystal [#404-639).