Heathkit HM-2140 User manual

Brand: Heathkit

Model: HM-2140

Type: User manual

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YOUR HEATHKIT gO-DAY LIMITED WARRANTY

Consumer Protection Plan for Heathkit Consumer Products

Welcome to the Heath family. We believe you will enjoy assembling your kit and will

be pleased with its performance. Please read this Consumer Protection Plan care·

fully. It is a "LIMITED WARRANTY" as defined in the U.S. Consumer Product

Warranty and Federal Trade Commission Improvement Act. This warranty gives

you specific legal rights, and you may also have other rights which vary from state to

state.

Heath's Responsibility

PARTS - Replacements for factory defective parts will be supplied free for 90 days from date of

purchase. Replacement parts are warranted for the remaining portion of the original warranty

period. You can obtain warranty parts direct from Heath Company by writing or telephoning us at

(616) 982~3571. And we will pay shipping charges to get those parts to you anywhere in the

world.

SERVICE LABOR - For a period of 90 days from the date of purchase, any maifunction caused

by defective parts or error in design will be corrected at no charge to you. You must deliv"'~ the unit

at your expense to the Heath factory, any Heathkit Electronic Center (units of Ver' '...'?LQ9Y

Electronics Corporation), or any of our authorized overseas distributors.

TECHNiCAL CONSULTATION - You will receive free consultation on any problem you might

encounter in the assembly or use of your Heathkit product. Just drop us a Une or give us a cail.

Sorry, we cannot accept collect calls.

NOT COVERED - The correction of assembly errors, adjustments, calibration, and damage due

to misuse, abuse, or negligence are not covered by the warranty. Use of corrosive solder and or

the unauthorized modification of the product or of any furnished component will void this warrai.ty

in its entirety. This warranty does not include reimbursement for inconvenience, loss of use,

customer assembly, set~up time, or unauthorized s~rvice.

This warranty covers only Heath products and is not extended to other equipment or components ~

that a customer uses in conjunction with our products.

SUCH REPAIR AND REPLACEMENT SHALL BE THE SOLE REMEDY OF THE CUSTOMER

AND THERE SHALL BE NO LIABILITY ON THE PART OF HEATH FOR ANY SPECIAL,

INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, INCLUDING BUT NOT LIMITED

TO ANY LOSS OF BUSINESS OR PROFITS, WHETHER OR NOT FORSEEABLE.

Some states do not allow the exclusion or limitation of incidental or consequential damages, sathe

above limitation or exclusion may not apply to you.

Owner's Responsibility

EFFECTIVE WARRANTY DATE - Warranty begins on the date of first consumer purchase You

must supply a copy of your proof of purchase when you request warranty service or parts.

ASSEMBLY _ Before seeking warranty service, you should complete the assembly by carefully

following the manual instructions. Heathkit service agencies cannot complete assembly and

adjustments that are customer's responsibility.

ACCESSORY EQUIPMENT - Performance malfunctions involving other non-Heath accessory

equipment, (antennas, audio components, computer peripherals and software, etc.) are not

covered by this warranty and are the owner's responsibility.

SHIPPING UNITS - Follow the packing instructions published in the assembly manuals. Dam~

age due to inadequate packing cannot be repaired under warranty.

If you are not satisfied with our service (warranty or otherwise) or our products, write

directly to our Director of Customer Service, Heath Company, Benton Harbor MI

49022. He will make certain your problems receive immedi~te, personal attention.

HEATH COMPANY PHONE DIRECTORY

The following telephone numbers are direct lines to the departments listed:

Kit orders and delivery Information. . .. (616) 982-3411

Credit .. . (616) 982-3561

Replacement Parts.. . . (616) 982-3571

Technical Assistance Phone Numbers

8:00 A.M. 10 12 P.M. and 1:00 P.M. to 4:30 P.M., EST, Weekdays Only

RiC, Audio, and Electronic Organs (616) 982-3310

Amateur Radio .... ., (616) 982-3298

Test Equipment,Weather Instruments and

Home Clocks ..

Television ..

Aircraft, Marine, Security, Scanners, Automotive,

Appliances and General Products

Computers.

.... " (616) 982-3315

. ... , (616) 982-3307

Heathkit® Manual

HF DUAL WATTMETER

HEATH COMPANY

BENTON HARBOR, MICHIGAN 49022

Heath Company

Printed in the United States of America

_pa_

_e_2 ._

In Case of Difficulty 32

Troubleshooting Chart 32

Step-by-Step Assembly 12

Circuit Board Assembly " 12

Page 3

~H£i------------------------------------------------------

The HF Dual Wattmeter Model HM-2140 measures forward and reflected

power in transmission lines for frequencies between 1.8 and 30 MHz.

This Wattmeter was designed primarily for the Amateur Radio bands

within the high-frequency ranges on the 160, 80,40, 20, 15, and 10 meter

bands, and for other services which may lie in between the amateur bands.

The Wattmeter will measure transmissions: up to 200 and 2000 watts peak-

envelope-power in the forward direction and up to 500 watts reflected.

You can power the Wattmeter with a battery for complete portability, or

with the optional Heathkit Converter Model GRA-43-1where AC power is

available. No additional plug-in modules are required to cover the power or

frequency ranges. The Wattmeter is housed in a small, attractive, readily

portable cabinet.

A special switching circuit permits you to observe the battery condition at

any time. The remote sensor can be mounted into the cabinet or up to four

feet away from the metering cabinet and nearer to the transmitter's output

cables.

If you use only the 9-volt battery to power the Wattmeter, you must pur-

chase it separately. See Page 11 for additional details.

_pa_g_e_4 ~

IMPORTANT: Before you begin to assemble this kit, be sure to read the

information in the "Kit Builder's Guide."

When you perform the steps in the circuit board Pictorials, position

each part as shown. Follow the instructions carefully and read the

entire step before you perform each operation.

Capacitors will be called out by their capacitance value in pl

(picofarads) or

f-LF

(microfarads) and type.

Each circuit part in an electronic kit has its own component numbe

(R2,C4,etc.). Use these numbers when you want to identify the saffil

part in the various sections ofthe Manual. These numbers, which arl

especially useful if a part has to be replaced, appear:

Due to the small foil area around some ofthe circuit board holes and

the small area between the foils, use the utmost care to prevent solder

bridges between adjacent foils. Use only a minimum amount of

solder and small tip soldering iron of not over 40 watts. Allow the

iron to reach operating temperature; then apply it only long enough

to make a good solder connection. If you think a solder bridge may

exist, but you are not sure, compare the foil on the circuit board with

the "Circuit Board X-Ray View" in the "Illustration Booklet."

Most kits use a separate "Illustration Booklet" that contains illustration

(Pictorials, Details, etc.) that are too large for the Assembly Manual. Kee

the "Illustration Booklet" with the Assembly Manual. The illustrations in

are arranged in Pictorial number sequence.

SAFETY WARNING: Avoid eye injury when you clip off excess lea

lengths. Hold the leads so they cannot fly toward your eyes.

~lIIIIIiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii-_-------- _

To eliminate a solder bridge; hold the circuit board above the solder-

ing iron and reheat the solder. As the solder melts; it will flow down

the iron.

If your work surface is smooth, place the circuit board on a cloth to

prevent it from sliding around when you solder component leads to

the foil.

Resistors will be called out by their resistance value inn (ohms) or in

ill

(1000 ohms).

Page 5

---------------------

Unpack the kit and check each part against the following list. Any part that

is packed in an individual envelope with the part number on it should be

placed back in the envelope after you identify it until all parts are accounted

for.

The key numbers correspond to the numbers on the "Parts Pictorial" in the

separate "Illustration Booklet" on Page 1.

Each circuit part in this kit has its own "Circuit Component Number" (R1,

CZ,D101, etc.J..This is a specific number for only that one part. The purpose

ofthese numbers is to help you identify the same part in each section ofthe

Manual.

To order a replacement part: Always include the PART NUMBER. Use the

Parts Order Form furnished with the kit. If one is not available, see "Re-

placement Parts" inside the rear cover of the Manual. Your Warranty is

located inside the front cover. For prices, refer to the s~parate "Heath Parts

Price List."

KEY

HEATH

No. Part No. CIRCUIT

Compo No.

NOTE: The following resistors are 1/4-watt, 5% tolerance unless otherwise

noted.

KEY

HEATH

No. Part No. CIRCUIT

Compo No.

4 560

(green-blue-brown)

2 1000

(brown-black-red)

6-561-12

6-102-12 R2, R4, R8,R9

R18, R22

_p_ag_e_6

KEY HEATH QTY. DESCRIPTION

No. Part No. CIRCUIT

Camp. No. KEY HEATH QTY. DESCRIPTION

No. Part No.

A1 6-103-12 210 kG (brown-black-orange) R7, R11

A1 6-153-12 215 kG (brown-green-orange) R19, R21

A1 6-473-12 2 47 kG (yellow-violet-orange) R12, R16

A1 6-563-12 156 kG (green-blue-orange) R6

A1 6-334-12 2330 kG (orange-orange- R15, R17

yellow)

Precision Resistors, 1% Tolerance

A2 6-1652-12 16.5 kG (brown-blue- R24

green-red)

A2 6-4022-12 40.2 kG (yellow-black- R23

red-red)

82 25-885

83 27-136

83 27-137

2 100 fLF electrolytic

1 .015 fLF Mylar*

1 .02 fLF Mylar*

CIRCUIT

Camp. No.

C5, C6

C17

C18

NOTE: Integrated circuits may be marked for identification in any of the

following four ways:

2. Type number. (This refers only to the numbers; the letters may be

different or missing.)

C1, C2, C3,

C4,C7, C8

C9, C11, C12,

C13, C14, C15,

C16

_,--------------------------p-a-g

e-7

KEY HEATH QTY. DESCRIPTION

No. Part No. KEY HEATH QTY. DESCRIPTION

No. Part No.

01 90-1223-1

02 90-1224-1

03 203-1919-1

04 205-1588

05 261-34

1 Cabinet top

1 Cabinet bottom

1 Front panel

2 Side trim

4 Foot

E4 250-432 46-32 x 5/16" truss head screw

E5 250-89 1 6-32 x 3/8" screw

E6 250-347 2#6 x 1" sheet-metal screws

E7 252-3 96-32 nut

E8 253-21 4#6 flat washer

E9 253-89 1 #60-washer

E10 254-1 9 #610ckwasher

NOTE: Hardware packets may be marked to show the size of the hardware

they contain (HOW #6, for example). You may have to open more than one

packet to locate all the hardware. The hardware is shown actual size in the

Parts Pictorial.

E1 250-56

E2 250-365

E3 250-1157

4 6-32 x 1/4" screw

2 #6 x 1/4" hex head screw

4 1/4" circuit board spacer

F1 250-49

F2 252-1

F3 252-7

F4 253-10

F5 254-4

F6 254-7

2 3-48 x 1/4" screw

2 3-48 nut

1 Control nut

1 Control flat washer

1 Control lockwasher

2 #3 lockwasher

_pa_g

e_8 _

KEY HEATH QTY. DESCRIPTION

No. Part No. CIRCUIT

Compo No. KEY HEATH QTY. DESCRIPTION

No. Part No. CIRCUIT

Compo No.

G1 10-390 4 20 k11control R3, R5, R13, R14 H5 436-49 Power jack J1

G2 19-739 1250 k11control with switch R1/SW5 H6 455-633 Knob bushing

G3 64-62 12-section switch SW3, SW4 H7 462-932 Knob

G4 64-870 12-section switch SW1, SW2 H8 490-5 Nut starter

85-2039-1 1 Switch circuit board Solder

G5 407-741 1 Forward power meter M2

G5 407-742 1Reflected power meter M1 Printed Material

MISCELLANEOUS Blue and white label

390-1524 "Operation" label

H1 205-778 Alignment tool blade 597-260 Parts Order Form

H2 207-5 Cable clamp 597-308 Kit Builders Guide

H3 208-42 Battery holder Assembly Manual

H4 432-798 Battery clip (See title page for

part number.)

Page 9

~--------------------

Remote Sensor Assembly

(#100- 1749)

The Remote Sensor Assembly is a sealed unit which contains the following

parts. This Assembly has been factory tested and aligned. CAUTION: Do

KEY HEATH QTY. DESCRIPTION

No. Part No. CIRCUIT

Compo No.

6-470-12

6-332-12

6-223-12

6-104-12

10-312

10-390

10-941

47 il (yellow-violet-brown)

3300 il (orange-orange-red)

22 kil (red-red-orange)

100 kil (brown-black-yellow)

R101, R102

R103

X102

X103

not break the seal on the Remote Sensor Assembly; to do so may void the

warranty.

KEY HEATH QTY. DESCRIPTION

No. Part No. CIRCUIT

Compo No.

1 10 kil

1 20 kil

2 100 kil

R104

R107

R105, R106

CAPACITORS

20-103 2150 pF mica C101, C102

20-172 2 .001 f.LF(1000 pF) mica C103, C104

27-212 2 .0082 f.LFMylar C106, C107

31-8 1 1-8 pF trimmer C105

HARDWARE

250-324 26-32 x 3/16" screw

250-475 6 #6 x 3/8" hex head screw

_pa_g_e_10 ,~

KEY HEATH QTY. DESCRIPTION

No. Part No.

253-1 1 #6 fiber flat washer

254-1 12 #6 lockwasher

257-12 1 #6 brass eyelet

259-6 2#6 solder lug

256-5 8Long rivet

256-8 2 Short rivet

40-1970

56-20 1 Toroid coil

2 1N295 diode

OY.y,%1

i8I 3(8

5i8I 7(8

iiiilii"1

1 (eM) 2

I II'

3 4

CIRCUIT

Compo No.

L101

D101, D102

I "

I ,

I '

, I

KEY HEATH QTY. DESCRIPTION

No. Part No.

75-30 1 Strain relief

85-2038-1 1 Printed circuit board

204-9 2 Angle bracket

214-215 1 Cover

214-216 1 Chassis

340-3 6" Bare wire

346-21 6" Sleeving

347-39 60" 5-wire cable

390-1505. 1Label seal

436-5 2 Coaxial jack

475-10 2 Ferrite bead

I ,

"I I

I ,

I ' I

11 12

CIRCUIT

Compo No.

J101, J102

X101, X104

Page 11

~--------------------

Eveready #216 or # 1222

Mallory #M1604

Mallory #TR-146X (long life)

Burgess #2V6

ReA #VS323

Hellesens #410

Varta #438

The separate "Illustration Booklet" contains numbered illustrations (Picto-

rials, Details, etc.) that are too large for the Assembly Manual. The step-by-

step assembly instructions will direct you to the proper illustration in the

Booklet. After you have completed the assembly of your kit, place the

Illustration Booklet with the Manual and save them for future reference.

_pa_g_e_12 ,~

NOTE:To prepare a wire, cut it to the length indicated and remove 1/4"

insulation from each wire end. Tightly twist the bare wire ends and add

small amount of solder to hold the fine strands together.

r )

Locate the remote sensor and cable. Cut the cable 12"from the free

wire ends. Pull each ofthe wires from the 12"length ofthe cable; then

discard the

12"

white wire and the outer insulation. The remaining

four wires will be used during the Meter assembly.

( ) Locate the circuit board and position it lettered side up as shown ir

Pictorial i-ion the next page. Then install the parts as directed in th(

steps.

y.;

(INCHES)

1{8 I 3:8

5{a!

7(8

IiI

f'Pilljl'l

iIiI

III

(eM)

•

6 8

10 11 12 13

15 16 17

START.

NOTE: When you install a diode, always match

the band on the diode with the band mark on the

circuit board. A DIODEWILLNOT WORKIF IT

ISINSTALLEDBACKWARDS.SeeDetaill-1A.

<;iH\m'i;)A~~JD

Dl:

lN4149

diode #56-56).

(tI)

Solder the leads to the foil and cut offthe

excess lead lengths.

Page 13

IMPORTANT: TRE BANDED ERD OF DIDOES

C~R

BE MARKED IN A NUMBER OF

W~YS.

Prepare a 2-1/2" black wire. Connect this

wire between the two

"H"

holes as

shown.

(~'" R7: 10 kD.(brown-black-orange).

R6: 56 kD.(green-blue-orange).

(...(' Solder the leads to the foil and cut offthe

excess lead lengths.

R18: 1000 il (brown-black-red).

Wrapthe leads ofa .02

iLF

Mylar capacitor

around the leads of a 16.5 kil (brown-

blue-green-red) precision resistor. Solder

the leads and cut off the excess capacitor

lead lengths. See Detail 1-2B.

R24/C18: Resistor/capacitor combina-

tion.

Similarly, wrap the leads of a .015

iLF

Mylar capacitor around the leads ofa40.2

kil (yellow-black-red-red) precision re-

sistor. Solder the leads and cut off the

excess capacitor lead lengths.

R23/C17: Resistor/capacitor combina-

tion.

R15: 330 ill (orange-orange-yellow).

R16: 47 ill (yellow-violet-orange).

R12: 47 ill (yellow-violet-orange).

Solder the leads to the foil and cut offthe

excess lead lengths.

Refer to Detaill-2A and locate pin 1 of the Ie.

Then install the Ie so pin 1 is inserted into hole

1 on the circuit board. Make sure all of the IC

pins go through the circuit board before you

solder the pins to the foiL

~, pa_g_e_15

NOTE:When you install ceramic capacitors, do

not push the insulated portions ofthe leads into

the circuit board holes. This could make it dif-

ficult to solder the leads to the foil.

n;ULATION

==fT==

Solder the leads to the foil and cut off the

excess lead lengths.

Jl:

Mount the power jack (#436-49)

firmly down onto the circuit board as

shown. Then solder its lugs to the foil.

<M\%~

Solder the leads to the foil and cut offthe

excess lead lengths.

Page 16 --------

----------------_...--I~

SW3/SW4: Push the 2-section switch

(#64-62) firmly down onto the circuit

board as shown. Be sure the switch as-

sembly is all the way down; then solder

its 12 lugs to the foil.

Mount the battery holder with two 3-48 x

1/4"screws, two #3lockwashers, and two

3-48 nuts as shown. Use the plastic nut

starter to hold and start 3-48 and 6-32

nuts.

(vi

R13: 20 kl1 control (#10-390). Push the

control firmly down onto the board; then

solder the lugs to the foil.

Page 17

~I -----------------

START.

NOTE: As you install each component in this

column, be sure it is fully seated onto the circuit

board; then solder its lugs to the foil.

R1/SW5: 250 kO control with switch

(#19-739). Mount the switch as shown.

NOTE: Be sure the switch stands verti-

cally from the board .

." ,d.

'f- "".

CONTIN UEQ

NOTE: Before you install an electrolytic

capacitor, note the position ofthe identified

or -) lead, Be sure you connect the positive (

lead to the positive

(+)

marked point on the

circuit board.

IDENTIFIED

LEA D IS

NEGATIVE (-)

IDENTIFIED

LEA D IS

POSITIVE

(+)

(~Solder the leads to the foil and cut offthe

excess lead lengths,

Page 19

~--------------------

Ref~rto Pictorial 1-7 (Illustration Booklet, Page 4) for the following steps.

(~ Position the circuit board assembly on your work area as shown in the

Pictorial.

2" red

1-1/2" red

1-3/4" red

3-1/2" red

2-1/4" black

7" green

7-1/2" brown

NOTE: In the following steps, when you connect a wire to a circuit board

hol\?, solder the wire to the foil and cut off any 'excess wire length.

(",I

Connect a 2" red wire to circuit board hole B. The free end will be

connected later.

NOTE: In the following steps, (NS) means not to solder because other wires

will be added later. "S-" with a number, such as "S-2" means to solder the

connection; the number following the "S" tells how many wires are at the

connection. When a wire passes through one connection and goes to

another, the "through" connection will be counted as two wires in the

solder note, one entering and one leaving the connection.

'Yo Yo

(8 I 3;8

5(8 I 7;8

fl(1111111

5 1 (eM) 2

I "

,I.

I '

(v('

Connect a 1-1/2"red wire from circuit board hole Cto switch SW5lug

1 (S-l).

(j"connect a 1-3/4"red wire from circuit board hole D to switch SW5lug

4 (S-l).

(\A'

Remove an additional 1/2"ofinsulation from one end ofthe 3-1/2"red

wire. Pass this end of the wire through switch SW5 lug 2 (S-2) and

connect the wire end to lug 3 (S-l). The free end of the wire will be

connected later.

Connect a 2-1/4"black wire to circuit board hole A. The free wire end

will be connected later.

Connect a 2-1/4" black wire to circuit board hole E. The free wire end

will be connected later.

NOTE:The brown and green wires you will install in the next two steps are

jumper wires. Besure to route these wires exactly as shown in the Pictorial.

(..) Connect one end of a 7" green wire to circuit board hole

(between

switches SW3 and SW4) (S-l). Route the wire upward, forward, and

then across the board under control switch R1/SW5. Then route the

wire to the rear and connect the end to the other circuit board hole

(S-l).

, I ,

, I

"I I

12 13

,I 'I

I ,

, I

I ,

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Heathkit HM-2140 User manual

Brand: Heathkit

Model: HM-2140

Type: User manual

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Heathkit HM-2140 User manual

Heathkit HM-2140 User manual

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