Heathkit HWA 9 Manual

Page 1

Instructions

for the

HEATH
| zeal

ACCESSORY BAND PACK

Model HWA-9

Copyright © 1984
Heath Company

All Rights Reserved
Printed in the United States at America

INTRODUCTION

The Heathkit Model HWA-Q Accessory Band Pack
will expand the transmission and reception
capabilities of your Model HW-Q Transceiver from
four to eight amateur bands. Thus, your Transceiver
has 250 kHz CW coverage on all of the amateur
bands from 80 through 10 meters. The following in-
structions will include only the information neces-
sary to install these added parts on your circuit
boards. Complete information on alignment, opera-
tion, a circuit description, and the schematic dia-
gram are provided in your HW-9 Transceiver man-
ual.

HEATH COMPANY
BENTON HARBOR, MICHIGAN 49022

595-3061

Page 2

Page 2

Heathkif

PARTS LIST

Unpack your kit and check each part against the fol-
lowing list. Do not remove components that are sup-
plied on a tape from the tape until you use them
in a step. Return any part that is packed in an indi-
vidual envelope, with the part number on it, back
to the envelope after you identify it until that part
is called for in a step. Do not throw away any pack-
ing material until all of the parts are accounted for.

To order a replacemment part, always include the
PART NUMBER. Refer to Replacement Parts" in-
side the rear cover of this Manual. For prices, refer
to the separate Heath Parts Price List.

TAPED COMPONENTS

NOTE: These parts are taped on a strip
which was checked before shipment.

Since these parts are taped in the order
of assembly, you may not wish to check
these parts against the following list.

HEATH QTY. DESCRIPTION CIRCUIT HEATH QTY. DESCRIPTION CIRCUIT
Part No. Comp. No. Part No. Comp. N0-
RESISTORS DIODES
NOTE: The following resistors are rated at 1/4-watt and have 56-646 16 Bil-244 D105. D106.
a tolerance 015% (gold fourth color band). D109, D111,
D114, D115.

5222-12 4 22000(red-red-red) R111. R115, D116. D117.

R119, R121 D125, D126,
6-103-12 3 10k.Q(bm-bIk-org) R116, R120, D129. 0131.

R122 D134. D135,
6-123-12 1 12m(bm-red-org) R112 0136. 0137
CAPACITORS
21-761 12 .01 p.F (103) glass ceramic C116. C125

C134. C138.

C142, C144,

C146, C147,

C155. C159.

C164, C166

1/ y? 3/4 1 (INCHES) 2 3 4 5 6 7

"|3|°|:.°1;(°'l 1:11. iv.'l 1|. 1'. irirlfinj. 1TL+4II . [Ill IJTIJI 11 lrlrl [Ir 1 IrJT4vl
0 E 1 :3», '2 3 e 5 o 7 a 9 1o 11 12 13 14 15 10 11

Page 6

Page 6

Parts Installation

NOTE: In the following steps, you will be instructed
to install the parts on the oscillator circuit board.
Perform these steps in the same manner as you have
already done on the Transceiver. Use the parts from
the Taped Component Chart first.

Refer to Pictorial 1-3 [Illustration Booklet, Page 1)
for the following steps.

Section 1

NOTE: In the following steps. be sure to position
the banded end of each diode to match the banded
diode end printed on the circuit board.

[ ) D105:BA-244 diode [#56-646).
[ 1 D109:BA-244 diode(#56-646).
( ) D114zBA-244 diode (#56-646).
( ) D116:BA-244 diode (#56-646).
( ) C116: .01 11F [103) glass ceramic.
[ ) C125:.01 11F [103) glassceramic.
( ) 0134: .01 DF (103) glass ceramic.
( ] C138: .01 of [103) glass ceramic.

( ) Solder the leads to the foil and cut off the ex-
cess lead lengths.

Heathkiti
Section 2

[ ) D106: BA-244 diode [#56-646).

( ) C142: .01 11F (103] glass ceramic.

[ ) C144: .01 [LP [103] glass ceramic.

[ ) D111: BA-244 diode (#56-646).

[ ] C146: .01 DF (103} glass ceramic.

[ ) D115: BA-244 diode (#56-646).

[ ) C147: .01 uF (103) glass ceramic.

( ) D117: BA-244 diode (#56-646).

( ] Solder the leads to the foil and cut off the ex-
cess lead lengths.

Section 3

( ) R111: 2200 0 (red-red-red] resistor.
( ) D125: BA-244 diode (#56-646).

( ) R115: 2200 0 (red-red-red) resistor.
( ] D129: BA-244 diode (#56-646).

( ] R119: 2200 Q (red-red-red} resistor.
[ ) D134: BA-244 diode (#56-646).

( ) R121: 2200 .0 (red-red~red) resistor.
( ) D136: BA-244 diode (#56-646).

( ) C155: .01 11F (103) glass ceramic.

( ) 0159: .01 11F (103) glass ceramic.

( ] C164: .01 DF (103) glass ceramic.

[ ] Solder the leads to the foil and cut off the ex~
cess lead lengths.

Page 9

Page 9

Heathkif

T/R CIRCUIT BOARD ( ) Using a small screwdriver, loosen the small
screw that secures the collar on the
Disassembly bandswitch shaft. Then slide the shaft all the

way out of the Transceiver and set it and the

Refer to Pictorial 2-1 for the following steps. collar aSlde temporarily.

[ ) On the rear panel. remove the six screws hold-
ing the panel to the chassis and set them aside
temporarily.

( ) Position the Transceiver on your work area as
shown.

( ) Turn the BAND switch to 20. Do not change

the setting of this switch until you complete
these instructions.

) On the T/R circuit board, remove the five 6-32
nuts holding the board to the chassis.

Mill ll lllllllllllllu. {WI Illlll

REMOVE(5)
6-32 NUTS

T/R
macun

BOARD

LOOSEN
SETSCREW

: REMOVE
é (a)

scaews
PICTORIAL 2-1

Page 11

Heathkiti

Parts Installation.

Refer to Pictorial 2-3 (Illustration Booklet, Page 4)
for the following steps.

( ) Cut and prepare the following small black

wires:
1-5/8" 1-3/8"
1-1/4 1-5/8

NOTE: In the following steps, you will install these
prepared wires as shown in Pictorial 2-3, Section
2. As you install each wire, solder it to the circuit
board foils and cut off the excess wire ends. Perform
these steps carefully and avoid any unnecessary
bending and stress on the preassembled board and
wiring.

( ) 1-5/8" wire at W408.
( ) 1-1/4" wire at W407.

[ ) 1-3/8 wire W405.

[ ) 1-5/8 wire at W403.

Section 1

C567: 90 pF mica.
C566: 185 pF mica.
C565: 90 pF mica.
C557: 270 pF mica.
C556: 430 pF mica.
C555: 270 pF mica.

Solder the leads to the foil and cut off the ex-
cess lead lengths.

% 1/2 :y 1 (memes; 2 3
23131815317180 1. 1. . . . h
"'I f I I I ' I ' I ' I ' T ' I

B

O
levV"
O 5 1 (CM) 2 3 4 5 e 1

Section 2

( ] C423:

I

)

C422:
C420:
C421:
C418:
C419:
C413:
C412:
C414:
C406:
C405:
C407:

Solder the leads to the foil and cut off the ex-

68 pF (680) ceramic.

Small 3.3 pF ceramic.

68 pF (680) ceramic.
180 pF (181) ceramic.
6.8 pF ceramic.

180 pF (181) ceramic.
150 pF (151) ceramic.
6.8 pF ceramic.

150 pF (151) ceramic.
180 pF (181) ceramic.
9 pF ceramic.

180 pF (181) ceramic.

cess lead lengths.

Page 11