Ten-Tec 1056 User guide

RESIS.TOR 0 REFRESHER

Multiply
first 2 bands
black 0 o x 1
brown
red

orange 3 3 X 1000
yellow 4 4 x 10,000
green 5 5 x 100,000

blue 6 6 x 1

violet. 1 1

"'WARC Bands

10.100

18.068.

24.890 • 24.990
"" National

Frequencies

146.52

""E1SY

both

digits

of

by

3rd

Band:

1 1 x

10

2 2 X

100

,ooo,ooo

gray 8 8

Wblte 9 9

DDkl

""

Examples

reel-reel-gold = 2.2
rea-red-black =
red-reel-brown = 220 o
red-red-red = 2200 0
red-red-orange =

4th Band= mfr's roterance.

Gold=

Some

·:c

29.600

50.110

50.200

51.700

52.525

144.20

222.10
2;13.50

432.10

446.00

10.106·

14.060

""

Easy

29.357
satellite

145.55
space-earth downlinks

- - X

...

5%

sliver =

Ham Band

Highlights

·10.150

18.168

calling

!Simplex!.
FM
SSB

OX

USA

SSB

Packet
FM

sse

FM
CW-SSB

FM

CW

FM

QRP

7.040

CW

Space

to

RS·10

series

cw

beacon

FM

SAREX & MIR

0.1

n

22

o

12.2KI

22K

10%

}c

...-~~....,---~~~.,

MAKE

your

1/4

wavelength

=

234 • +.

•use

•

FOR

VHF.

to

(le~

1:4 A In

Earth

FREQ

238

vou

ALL

ABOUT
Disc
101
102 = .001pF
103 = .01

104

""

want

221

222
223
331 = 330
332
471
472
473

474

Got

Antennas!

Un

tor

cari

INCHES

THOSE

cap

Numbers!

= 100 pF

pF

.;,

.1

pF

more?

= 220 pF
= .0022

= .022 pF

pF

·=

.0033 pF

= 470 pF

= .0047 pF
= .047 pF

= 7

the

Idea

FEEn

In

MHZ
radials

use

2808

II!

MOLri~o

look

very

bUt

don't

check

them

to

read
lower
values are In
to
with

"" Examples:

red-red-silver
red-reel-gold 1 X
red-red-black I X
red-red-brown

brown-black-red = 1000

FOR

we

E volts = 1 amps X R 6hms

R =

I=

pF

P

less

than resistors in

1000 pH per resistor coae,

3rd silver band = x .01.

SURE!

ALL

know

E/1

E/

R

watts=

They used

bY

dropping

way

?17

down
That's how some folks make
excellent cold
...

by

the

iron

the

board, looking like
deformed
PLEASE
heat

the

so

IT

forming

not

A

super

Is

built

with
clinging
we

didn't

Just

jiggle
we

and
across

2,

PC-board soldering points,

especially

oon't

try

pH

INDUCTORS
much like resistors.
"resist· much --Just

out

on

vour

1-2

n.

= 0.22

11

101

= 220 pH

•••

•

to

cold

solder

solder

blobs

the

melting,

blobl

BRIDGE

extra

nifty

more

or

sockets.

hate

meter

mu;:h

your

=

=

make

.

lead

water.

joints

onto

Itself

solder

tiP

bridges

tnan

:'H

tmlcrone!lnesl,

122X.011

0.11

IX

this

E x I

BULLETS

melted

Into

melting

so

It

buckshot.

•.•
connection

does all

a shiny cone,

a dirtY

SOLDER

that

to

the

Iron's

need anyway.

the

soldering Iron,

can bUild

3,

4

or

DIP

IC'S

It:

you'll

kit.

;.~H

2.2,:~H

22

pH

11H

-

with

that

it

I

I

74306

No. 1056

T-KIT

·

CW-558.

"ANY BAND" NE61 2 Direct-Conversion

desig~

with all

meter

ham

bandpass

Module

Board

RECEIVER

parts

bands,

& fine-tuning

for

choice

plus

of

1

60-1

variable

controls

. ·

1reKIT

byTEN-TEC-

INSTRUCTI-ON

0

..

11itKif'

1185

Dolly

Information

Orders

A

Division

Parton

•

Fax

•

•

of

TEN-TEC,

Inc.

Parkwav • Sevierville,

1-865-453·7172
1-865-428-4483

1-800-833-7373

{credit

card

TN

37862-3710

orders

only)

·1

l

MANUAL

America's Best!

Kit

Assembly

for

and

T-J<IT

T KIT Manual No.

Instruction

Module

Model

No. 1 056

74306

Price:

$3.00

Manual·

Board Kit

Direct-Conversion

with

Parts

for

choice

Table

Introduction

Design Features . . . . . . . . . . . . . . . . . . . . 6

Circuit
Kit Parts List
Circuit
Circuit Board
Circuit
BAND CHART
First Connections,
DC

Operating, Experimental Features

Troubleshooting Guide

Getting
What
T-KIT Limited

of

Contents

.......................

Description
Board X-Ray

Assembly

Schematic , .·

Power

Supply

to

Know

Frequency

Warranty

(Schematic

.......................

View

Steps

. . . . . . . . . . . . . . . . . 1 2-1 3

(C1-C5,

the

Am

L 1-L3)

Tests

. . . . . . . . . . . . . . . . . . . . 1 8 ·

Receiver
I On?

..............

................

...............

·-IMPORTANT: Please read Warranty

. BEFORE

starting

of 1 60

on

pp.

.............

. . . . . . . . . . 11-1 6

...........

...........

.............

kit

to

12-13)

........

assembly.

1 0

5
7

8-9

16

20
21
21-22

inside hack coli

Receiver

Meter

1 0

17
19

Ham Bands

Te::-1

__j

Circuit

board

and

manu·al

... a quality

1185

Sevierville,

Copyright(O

electronics

a

Division

Dolly

Tennessee

Fax

1994.

All

kit

pro;ect

From

T-KIT

of

TEN·

TEC,

Inc.

Parton

(865)
(865}.

Right:; Reserved.

Parkway

37862
453·7172
428-4483

.

Introduction

The T-KIT 1

result
magazine
offer

something
simple receiver
Board
office, or incorporated
transceiver or

The simpleness
design contributes
kit.· Instead

you to make band choices
we

offer
change
for

both T-KIT and you: our

. have everything in hand

your

Model

All frequency-determining
packet. SAVE
T-KIT No. 1.056-LC. Doing so
own

new

056

Direct-Conversion Receiver Module Board

of

our looking

coostruction

may

be finished

"trans-receiver"

of

ONE

model plus ALL

it

to) any HF ham band

1056

application

over

better

which

of

stocking

your

is

as
into

NE602/NE612

to

the novel

receiver board.

unused coils and

or

what's

articles and asking ourselves

at

an

genuinely

a stand-alone receiver

numerous one-band versions, pushing

to

for

·on

the

kit

market

attractive

you

own

project.

way

which

the

of

inventory

explore

parts

are packed in a clearly-marked

will

giving

price. Our goal

useable. The

back-to-the-basics

direct-conversion

we

chose

you

may

not
parts needed
interest

the

help later,

or

to

is

much

reasonable capabilities

capacitors

selling.

1056

for

to
be ready

to

you. This is good

simpler, and you

in

whether

packaue this

is

and in

if

we

can

was

a

Module

travel, den or

receiver

to

make,

put

it

on (or

this

packet,·

for

your

the

of

II

While designed

of

a ham band, the
frequency coverage and
remember

or

with

friends

valued customers,
staff

can coach you

As you plan your use
that

the performance
as the frequency goes up,
kit

includes all parts

tried

6 Meters,
expect
on

160

the

through

to

be a single band receiver

that

experimenting
for

fun. As nice as TEN-TEC tries

kit

but

same

stability

30

Model 1 056

transmit/receive

experimenting

through!

of

this receiver module board, keep in mind

of

ultra-simple receiver

to

try

Engineering said
meters.

permits

is

something

is

particularly
ham bands up

"forget

on

12

or

1 0 meters as

1056-

5

for

casual monitoring

experimenting

applications. Please

we

all

do

on

to

be

NOT

a process

above

to

circuits
15

28

it"),

deteriorates

MHz. While this

MHz

(we

please

you

will

with

our

to

our

which

also

do

not

enjoy

both

own

our

Model 1

056

Circuit

Descrip-tion

T -KIT Model 1

0 Signetics

0 True varactor tuning

0 Zener diode regulation

0

LM358

0 Front-panel bandpass control

0 Signetics

a Stereo jack

a Plenty

of

a Separate

0

RF

gain control

a Provision

a Provision

0 Frequency Counter

0 Efficient

take your favorite ham band ANYWHERE!

a Jumper provision

a Operates on

Use

this

the T -KIT

056

Receiver Design Features:

NE612

op amp bandpass

TDA2611

speaker audio

"Bandset"
for

for

6"WX2 ~ "D

mixer-oscillator

(MV209)

for

A audio amplifier

economical

and "Bandspread" tuning controls

TX

sidetone injection

receiver audio

output

board

for

separate

12-15

VDC .

space (and page

1056

Direct

filter

"Walkman"

muting

line

from

layout:

DC

supply

4.),

to

during

Conversion Receiver

IC

headphones

transmit

local oscillator

to

audio

plan

your

use

IC

of

Module

Board

I The Schematic Diagram is

The

efficient
possible
identical
because
tuned

RF
dissimilar values
matching. Potentiometer
overload
serving as
determined
plus the varactor

applied
varactor (D1) provides coarse
tuning

or
voltage
value

of

Zener diode D2
varactor circuit,

The

output

conversion result

'simplicity

by

the Signetics

to

the

well-known

it

is standard TEN-TEC

input

circuit

by

strong signals and

RF

gain

by

C3, C4, L2 (plus L3

coupling

of

C 1 and C2 are selected

control.

tuning

through

tuning

"band spread"

to

D1

through

R5

will

increase

(6.2V)

supporting

from pins 4 and 5

of

mixing

printed

of

this

NE612AN

NE602.

R1

is an

The local

network

pot

R2

tuning

by

R3 is done

R5, 1

megohm.

or

decrease

regulates

U1

of

antenna

and similar receivers is made

inventory.

the

antenna

attenuator

nearby

on

coupled

and R4 ( 1

the

's

never-exceed Vee
U1

local oscillator frequency. This audio
the

filter

network

amp U2a. The

from

gain·
The

serve

antenna

other

LM358

as

an elementary bandpass

tuning done

formed

LM358

IC (U2a,b) is a dual op-amp. The voltage

input

op-amp (U2b) and

by

potentiometer

by

R6-R9 and

to

U 1

to

U2a

filter,

R16.

on pages

12-13.

mixer-oscillator, functionally

The

NE612AN

L 1,

to
for

AM

broadcasts, therefore

oscillator

80/75

through

OOK)

or

"band

by

coupling

to

and

to

is used .

C1

and C2 form a

pins 1 and 2. The

propBr impedance

minimize

frequency

160

is

meters),

C5. Voltage

the

MV209

set."

The fine-

the

control

As desired, changing the

the

fine-tuning

voltage

is

RF

output

to

low-level

input

with

is coupled

C1 0 to

output

its

with

is

associated components

front-panel

rate.

the

oscillator's

limit

audio,

the

the

inputs

typically

of

8V.

the

direct-

variable

through

of

68

dB.

filter

op.-

~-~

Installing Parts

we

When

say

0 Choose correct
0 Insert
0 Insert correctly,

such as

0 Solder all wires

0 Trim

or

on

the

Circuit

"INSTALL"

in

correct

for

the

transistor

"nip"

excess

Board:

a part,

part

value

PC

Board

if

there is a

or

pins

wire

1056-

we

location

and

lengths

mean:

right

LED

6

way

and

wrong

way

The

output

Control R18

amplifier IC, using

of

U2b is coupled

to

the

input

the

same general

TEN-TEC HF transceivers.

of

through

U3,

the

1056-

C18

and

Signetics

circuitry

7

Volume/AF

TDA2611

Gain

A audio

already proven in

T·KIT

Model

1056

Receiver

Parts

List,

cont.

Model 1

056

Direct

Conversion Receiver

KIT PARTS LIST

Before you
parts
Limited

Quantity

Fixed

Resistors

The 3 color

2 0
1 0

1 0
2 0
4 0

1 0
2 0
3 0
2 0 1

Fixed

Capacitors

1 0 3
2 0

1 0

1. 0 .0033

3

0

4

0

· 4 0 1 0
2 0
2 0
Integrated

1. 0 NE612AN

1 0

1 0
1 0

0

1

Other

Components,
1 0
5 0 1

1 0

0

1

begin

construction,

and

check

Warranty

bands

3.3

ohm

220

ohm

680

ohm

3.3K

(orange-orange-red)

4.7K

(yellow-violet-red)

10K

(brown-black·o·range)

lOOK

2/0K

megohm

pF

disc

150

pF

.001

pF

JJF

.01

JJF

.1

JJF

disc

JJF

33

JJF

470

pF
Circuits,

LM358
TDA2611A,
MV209

6.2V

:mner

Circuit

OK

front
Miniature
Model

them

terms

Description

denote

resistance

(orange-orange-gold)

(red-red-brown)
(blue-gray-brown)

(brown-biack-yellow)
(red-red-yellow)

{brown-black-green)

(common

capacitor

disc

capacitor

(marked

mylar

mylar

film

(marked 1 04)
electrolytic
electrolytic

electrolytic

Diodes:

or

NE/SA-602

op·amp

Board

1056

9-pin

varactor

diode,

Hardware:

for

-panel
stereo

instruction

8-pin

potentiometer

per

the

regarding

and

Value

value.

The

4th

. . . . . . . . . . • . . . . •

. . . • • . . . . . . . . . . . .

. . . . . . . . . • . . . . . • . .

. . . . . . . • • . . . . . . .

. . • . . . • . . . . . . . . . . . .

to

all

bands)

."

....••..•.••......

..•............•..

102)

film

diode

Model

jack

.......•.•..•.

(marked

(marked

•..••...••.........•.

......••....•..••..•.

DIP

SIP
type 1 N753A

332)

103)

•.................

...•........•.•.....

8-pin

IC

audio

amplifier

. • . . . . . . . . • . . .

1056

. . . . . . • • . . • . • . . . . . . J 1

manual

please

following

band

. . . . • . . . . . . . . .

......•......•.

. . . . • • . . . . . . . . .

. . . . . . . . . • . . .

...........

DIP

IC

• . • • . . • . . • . . . .

. . . . . . • . • . . .

..•...........

controls

•...•..•.••..

take

the

list. Please

any

suspected

(gold)

denotes

5%

: . . .

...•.•.. · ..

.

. . . . . . . . .

IC

.......

•.

. . • D 1

• . . • . . . . R

tolerance.

time

to

review

parts

Schematic

R20,R22
R21
R15
R12,R17
R6,R7,R8,R9

R19
R4,R13
R10,R11,R14
R5,R23

C25
C11,C13
C20
C10

.

C14,C15,C16

.

C6,7,8,23
C12,17,18,19

C9,C21
C22,C24

U1
U2
U3

02

1-3.16,18

sort:your

the

shortage.

Part

No.

30109
30130
30136
30144
30146
30150
30161
30077
30173

23248
23388
23245

23288
23340
23261
23266
23308
23228

25319

25117

25299

28050
28055

-

78249

30267
35252
74306

Capacitors

1 0

1 0

0

22

2

1 0

27

3 0

33

3 0

47

1 0

56

1 0

68

1 0

91

2 0

.100

0

150

2

. 2 0

180

1 0

220

1 0

270

1 0

470

1 0

680

1 0

1000

1 0

4700

1 0

.01

Inductors

0

8.0

2
2

0

5.8

2

0

2.8

0

1.3

2
1

0

8.2

1 0

47

MINIMUM

0

15

0 ·

Diagonal

0

Needle-nose

0

Non-metallic

0

RF

(Available

(C

1-C5)

10

pF

............•................

15

pF
pF

•............................

pF
pF

pF

............•..•............

pF

...•.•.•....•..•..•......•.•

pF

.•..•....•.....••.....•.....

'pF

......•.......••••...•......

pF

(marked

pF

(marked

pF

(marked

pF

(marked

pF

(marked

pF

(marked

pF

(marked
pF (-.001
pF

(-.0047

JJF

.............•.•..•...•.•.•..

(l

1,

L2,

JJH

shielded,

JJH

shielded,

JJH

shielded,

JJH

shielded,

JJH

molded

JJH

molded

TOOLS

to

35

watt

cutters

pliers

signal

source

of a type

NOT

DO
Solder

per

Band

Chart

for

160-1 0 Meters:

...........................

.......•...................•

•.....•....

100

151)

181)
221
271
471
681

JJF,

JJF,

LJ)

per

tuneable
tuneable
tuneable
tuneable

inductor

inductor

AND

TEST

soldering

or

wire

alignment

or

receiver/transceiver

USE ROSIN-CORE SOLDER

intended

at

electronics

use

contains

: .

•.•...•......•.

or

101)

....•.............

......•..........•

I

.................

l

.................

I

.................

I

.................

marked 1 02)

marked

Band

(gray-red·gold·gold)

(yellow-violet-black-gold)

EQUIPMENT:
iron
"nippers"

blade

hardware

LEAD:

............

472)

Chart

for

coil

(marked

coil

(marked

coil

(marked

coil

(marked

(for L 1,

for

L2)

electronic

distributors

store

wash

•.........

..•......

160·1 0 Meters:

30-32)
30-33)
30-34)
30-35)

for

initial

solder,

. • . . • l3,

alignment

PC-board
or

Radio

hands

See

.

"

"

.

"

.

.

.

.

C5

80/lliO

. . .

ll

,l2
. . . l1.l2
. . . l1 ,l2

••.

·L1,l2
80M

. .

L3,

160M

ONLY,

assembly.

Shack

paste

before

or

Chart

stores.)

flux.

eating!

233"11
23372
23374
23375
23376
23378

23379
23381
23384
23385

.

23388
23389
23396
23397
23400
23402
23282
23293
23260

21055
21056
21057
21058
21123
21160

.

REQUIRED,

0

Battery

. 0

Antenna

0

Stereo

NOT

SUPPLII:D:

or

regulated,

for

band

h~tadphones

well-filtered

of

interest,

or

speaker

8-15

or 1 0-20'

1056-

Volts

random

8

DC

wire

1056.

-

Circuit Board

Assembly

Steps

The basic
to

all

.

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·marked on the
capacitor itself
designated

0 0 2a. Insert U3,

make sure

that

and

they can go. (Notice also

side

0 0 2b. Solder the 9 ·pins

solder bridges across the IC's pads.

0 0 3. Install C20, .001

0 0 4. Install C22, 4
0 0 5. Install
0 0 6. Install C19,

0 0 7. Install C 1 8, 1 0

To complete the audio
install

0 0 8. Stereo

0 0 9. AF Gain (Volume) 1

0 0
0 0
0 0

0 0

• Pp.

assembly

bands first,

component

location

explanations. There

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even

values

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10.

11.

12.

13.

12-13:

by

that

the

the

IC

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R19, 1
R20,
R22,
C23,

or
and.other

C21, a 33

the dark stripe.

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corresponds

C24,

3.3

3.3
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Schematic.

procedure

leaving

outlines

of

many
for

very

in

orienting

that

top

is

the

the
pins

Jack

OK

ohms (orange-orange-gold).
ohms (orange-orange-gold).

JJF

si/kscreened

parts
electronics

experienced

advantage
information

JJF

all 8

with

correct

of

the

longer

the

TDA2611

front

(imprinted) side faces C21

are pressed

JJF

70

pF

470

JJF

10

JJF
JJF

output

parts:

J 1 .

(brown-black-orange).

(marked 1

Assembly

will

be to

the

frequency-determining

reasonably

is

no

buffs

builders

one-way-only

of

the

in

electroytic

of

the

electrolytics

polarity.

circuit

that

of

electrolytic,
electrolytic,

board. The (

of

the

two

A SIP audio IC. Before soldering,

into

their

the

banded end

to

the

notch

U3

per 2a, taking care

(marked 1

electrolytic,

electrolytic,

section

OK

potentiometer

04).
steps

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the top side

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parts.

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capacitor. This is

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02).
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with

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correct
correct
correct

R18.

polarity.
polarity .

on page

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of

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PROGRESS
At this point, the audio outpl.\t stage
installed correctly per steps
progress, use a highlight m£trker

schematic

w 0 14. Install U2, the

band, notch or
toward U3.

Install the remaining
correct polarity

5.

0 0 1

0016.C12,

0017.C9,33pF
Install these components

0 0 18.

0 0 19.
0 0 20. R14, also
0 0

21

0 0 22. C13, also

0 0 23. R12,

0 0 24. R17, also

0 0 25. R21,

. 0 0 26. R 13, 1

0 0 27. C14, .01 pF film
0 0 28. C15, also .01
0 0 29. C16, also .01
0 0 30. R15,

NOTE:

presume you are
not

part

a single

wire

would

system

+

12V

which are discussed

0 0

31

make a staple-shaped
0 0 32. As in Step
0 0

33_.

NOTE

1-1

now

completed.

LM358

dot

is aligned per

electrolytic

as

explained in Step 1 .

C 1 7, 1 0

R1

0,

R1

. C 11, 1

The

installation

of

a transmit-receive combinatiorf,

12-volt

be replaced

of

a transceiver

provides

. Using bare wire nipped

Install Bandpass Control R16, 1

f,

10pF

220K
also

3.3K
220

680

pF

of

(red-red-yellow)
220K
220K

50

pF

(marked 1 51)

150

pF.

(orange-orange-red)

3.3K
ohms (red-red-brown)

OOK

(brown-black-yellow)

pF
pF

ohms (blue-gray-brown)

of

jumper

setting

DC

flexibility

up the

power

by a shielded

or

in

later

jumper

31,

install a

op-amp IC, making sure

the

capacitor

film
film

board

source. The

transmitter. The

battery

in

"Power

wire;

1056-

works,

3. If you enjoy keeping
to

color

the

board

capacitors, being

~M358

(marked

wires

for

line to the

or

power

Supply

from

a resistor already installed,

install

jumper

if

all parts have been

the portions

drawing,

dual op-amp

·1

03)

in

stegs

us€

JM2

at

OK

31

as a receiver only,

and

that

"MUTE"

T-R

jumper

supply

Considerations. "

it

at

"JM2"

"JM

1'"

potentiometer.

facing

attentive

circuitry:

and

you
switching

"JM

connections,

( +

12V).

14

track

of

the

that

to.

32

will

jumper

1 "

at

(MUTE).

of

its

use

Progress

With
oscillator, and AF
the operation
so,

0 Check
0 Connect stereo-headphones
0 Turn the Bandpass and AF Gain
0 Temporarily
0 Holding

touch
60

0 Rotate the Bandpass control:

in the

0 Disconnect
If

you
such
installed before proceeding

Install

0 a

a

0
0 0

0 0
notched end is oriented per

. choose

solderil"ig the.

Install

0 a

O·a

·P

0

0 0

0 0
0 0

seat
orient

outline

P 0

cathode

Test

(Optional):

all· parts

follow

the

Hz

pitch

do-not

as a howl,

the

34.

35.

36.

37.
to

the

38.

39.

40.

41:

42.

43.

firmly

the

o·n

44.

now

installed

output

of

the

full

this

procedure: · ·

first

that

Steps

connect

the

shaft

of a screwdriver

end

of

R19 nea.rest

AC buzz.

of

the

background hiss.

the

12

volts DC

observe these results, or

squeal

remaining 1

R 1 ,

RF
R2, Tuning
R3, Bandspread

Install

R6, 4. 7K (yellow-violet-red)
R7,
R8, 4. 7K

R9, 4.7K
C1

Install

Install the zener diode, D2, making sure

·end

U1;

use an 8-pin DIP

socket

R-C

network

.4.

7K

0,

.0033

D1,

against

flat

side

the board.

is

oriented

Gain

the
the
of

OK

the

as you

film

this

except

circuits,

U2/U3

1-33

have been completed correctly.

or

12

volts

wires.

or

putt-putt,

further.

front

NE612AN

the

socket

would

between

capacitor

MV209

board before soldering, and

transistor-shaped

with

the

the

NE612

this

is a logical

audio circuit,

speaker

controls

DC, being careful

(or a

C19:

you should hear a distinct

you

should har a

if

you

please double-check all parts

panel

controls:

IC, making sure

outline on

for

U1, use

for

the

Ul

and

U2:

(marked

varactor

stripe

diode. Let

on

with

point

if

you wish. To

fully

clockwise

about

length

the
IC itself.

the

of

distinct

get

extra noises

that

board.

the

same care in

332)

be·

component

that

board outlne.

its

bare wire),

the

RF

input,

to

check

polarity.

change

its banded,

If

you

diode body

sure

to

per the

the

banded

do

10.56-

15

Install these remaining parts

.1

pF

0 0 45. C6,
0 0 46. C7, also
0 0 47. C8, also
0 0 48. R4, 1
0 0 49. R5, 1
0 0 50. R23, also 1 megohm
0 0 51. C25, 3 pF

This completes installation
is

no question in
up, final parts installation is
values for C 1-C5, L1-L3, and installing

If you plan
choice, you can make desoldering a
leaving
the board, and soldering
shields.

the copper traces

T -KIT 1

GUIDE

160

to

an

extra 1

If

you do change parts, be gentle so

056

Direct-Conversion Receiver

TO FREQUENCY-DETERMINING PARTS

C1

.001

disc capacitor (marked 1 04)

.1

pF

.1

pF

OOK

(brown-black-yellow)

megohm

your

mind

"tinker"·

C2

.0047

/8"

of

with

or

the

C3

180

common

(brown-blijck-green)

of

parts

common

about

only a matter

several bands before making a final

so

of

only

board,

lead

one

C4

180

or

which

bit

length

of

the

the

C5

.01

to

all bands:

to

all ba.nds.

band you

of

them

easier on yourself

between

two

parts themselves.

l1

8.0pH

wish

selecting

in

the

legs on the··coil

as

the

normal

capacitors and

not

to

l2

8.0pH

If

there

to

set

correct

way.

by

damage

L3

47pH

Install the
0 0 52. C1, value

0

0·53.
0 0 54. C3, value
0 0 55. C4,

0 0

0 0 57. L 1, value marking
0 0

0 0

• A

wire

First

The
for

DC
speaker. The normal color code
and black
wire
easily. Before connecting 1
back over

following

C2,

value--

value--

56.

C5,

value==

58.

L2, value

59.

L3,

value==::

jumper

MUST

Connections

minimum

power,

rather

connections needed

an antenna

for

negative. We recommend using stranded hookup

than

the

your

work,

parts

--

--

be

solid

checking

for

the

marking
color

code

installed

or

random

type:

solid wire is prone

2VDC,

for:

--

at

to

for

it

Meter

_______

L3

if a coil

test

the

wire,

plus headphones or

DC

power

is

worth

Band:

_

is

not

required.

receiver are wires

is red

the

for

to

breaking

effort

positive

to

go

80

180

40

91

30

91

20

47

17

56

15

47

12

33

10

27

Complete
Kit

is

provided in
the parts in Steps
blanks provided on the

680
470
470

220

270
270
180
150

identification

150
150
100
47
22 22

47

33
22 22

the

Kit Parts List

52

data

through

following

1056-

150
150
100

47

.01
68
15
15
10

47

33

10
10
10

for

the 1 056-LC

on

59,

write

page.

16

.a.o

5.8

2.8

2.8

1.3

1.3

1.3 1.3

1.3

page 9. Before soldering

the

8.0

5.8

2.8

2.8

2.8

1.3

1.3

Band Change Parts

correct value in the

8.2

jumper
jumper
jumper
jumper.

.

i_umper
jumper
jumper

I

0 Quality
0 Completeness
0 All excess
0 No

Initial

Before applying DC voltage, place the finished and double­checked board on a clean, non-metallic
ready
board is already
clampedin
above

changes
Set

the controls

Tuning, Bandspread,

Adjustment
alignment
from

of

solder

wire

wire

scraps lodged

Tests,

to

do so, oscillator

a small vise. This is true especially

14

MHz,

of

the

of

tool.

a plastic

shaft,

points

of

soldering

leads

trimmed

between

Adjustments

alignment

mounted

which

board being

as

follows:

coils L 1 and L2

If

necessary,

to

its

can be

moved

RF

Bandpass-

wood

dowel,

1056-17

work

intended chassis or panel, or

affected

Gain-

mid scale; AF

must

such a tool

(it's

easy

to

miss one)

·

solder

will. go more

around on another surface.

etc.

points

work

surface. If you

smoothly

for

by

tiny

capacitance

maximum

be made

can be made easily.

(clockwise);

Gain-

with

frequencies

as

a non-metallic

are

if

the

desired.

The

oscillator coil (L2) is adjusted
by listening
tuning .the coil
1056
VFO,

QRP

·After getting L2
strength, reducing
adjusting L 1 . Use

to ensure

for

the

until

receiver itself.

transmitter,

"in

the

the

satisfactory

oscillator

you

That

the

Tune

coverage

to

the

desired

signal in a nearby receiver, or

·hear a desired reference signal
signal can be

or

familiar

ballpark,"

RF

gain as needed

control

of

activity

adjust

the

and·

from

on

L 1

to

minor

band.

frequency

a signal generator,

your

favorite

for

maximum

hear

the

adjustments

with

effect

either

by

the

band.

signal

of

of

L2

Oper~ting

The

following

experimenting
transmit/receive setups.

DC

Power Inputs: See preceding section.

and

Experimental

details are provided

with

or adapting

the

Features:

for

your

convenience in

receiver board

to

ham-band

Final

Enclosure, knobs,
is

.

T-KIT Enclosure-PLUS
pak was designed

DC

The ideal
A

used. Separate DC
jumper wire, are
circuit, allowing you
or batteries you have on hand. For
power
unacceptable
try
Or,
"AA"
from the

the
input
batteries are longer prime
the audio
the oscillator and

Assembly

part

of

build.ing

Power

12-15

module

a battery

you

may

alkaline cells: you

U1/U2

is

to

Supply

DC

voltage source

VDC

power

may

hum
for
want

12-volt

circuitry.

increase

IC

causes

switching,
any

T-KIT

hardware/enclosure

with

this

supply

supply

provided

to

experiment

work

or ripple

12V-A

battery

tuning

to

make

The

the

voltage

and use

usef.ul life

connectors:

Module

1056

Considerations

for

the

with

lines,

for

audio IC

fine

for

to

the

the

the

unit

may

wish

pack, and use

primary

but

still useable,

fluctuations

circuit.

selecting these yourself

Board.

receiver

receiver is a

very

normally

U3

with

exampl~.

audio

receiver

wall

ultra-portable, using 8 or 1 0

to

ruri

advantage
of

the

If

you

package,

project

good filtering

connected
and

the

output

front

supply

only

a·

separate

batteries.

the

which

in

12

the

rest

various

a wall-plug-in DC

but

introduces

end. Solution:

for

the

audio amplifier

9V

of

the

current

can destabilize

want

to

the 1 OOOC

mind.

volt

battery.

may

by

the

of

power

12V-B.

battery

dual voltage

When

demand

use a

also
the

paks ·

the

be

for

·
of

Sidetone
direct access
sidetone or DSB/SSB audio
audio injection
the receiver circuit, because

will have no

·
Mute:

the board makes
receiver during
audio monitoring).

Bandspread: Notice on
in parallel
frequency change is determined
The value
preferences and

· the
higher frequency bands rectuires less change in capacitance, both
tuning controls
meters,

Freuency Counter

.through R23 and

hookups
frequency. Some counters

Any
mini-coax (RG174),· because
adds capacitance

intro~uce

Input:

effect

Ordinarily

with

of

frequency

than

of

frequency

counter

unacceptable !evels

Used

with

the 'MUTE feature. (see below), this

to

the

input

of

U3

permits

while

must

b.e

controlled

.

shorted

if

transmit

the

R5

may
the

change rate, and vice versa. Because

will

when

Output:

C25

hookup

to

by a jumper

easy

for

(while still

the

Tune

("Bandset")

be changed

band

of

cover

tuning

much

160

This
is an
counters

~hould

the

oscillator

schematic

transmitting.

BEFORE

the

Volume

you

to

by

to

interest. Increasing

more

or

80

connection

option

to

display

may

require a

us~

the

coax

and

circuit.

of

clock

injection

it

reaches this point in

control

wire, this pair
use a T-R
permitting

that

control.

the

value

suit

spectrum

meters. ·

included

shortest

the
noise.

circuit

sidetone or

this

control

The rate

of

personal operating

to

pin 7

for

experimental

the

oscillator

buffer

length possible of

counter

Some counters may

The level

R5, 1 megohm.

at. say, 1 5

of

a CW

of

such

(R18,

amplifier stage.

of

to

R5

of

input

AF

Gain)

pads on

silence the

other

functions

of

will

lowef

tuning

or·.1

U 1

circuit

0

0

If

you prefer a

change

1

11

!j

R21

from

9V

220

battery

ohms

for

the

to 1 00

1056-

NE612/LM358

ohms.

18

circuitry,

Speaker
output

. quality speakers in well-designed enclosures. An unenclosed

speaker laying on a
headphone
available inexpensively

Band Parts Kit: Keep
You

Output:

line. The

may

wish

Connecting headphones ·interrupts the speaker

best

workbench

jack

also permits use

the

to

try a different

speaker

for

performance

will

not

of

mini stereo speaker systems

personal radios, CD players,

extra parts

together

band or

will

come

be

impressive~

for

future use.

experiment

from

The
etc.

with

good

band

1056-19

switching ideas. Please be aware
parts or provide technical

to

designed
Before trying

be a one-band receiver. ·

ANY

of

the receiver, make certain

support

the

experimental features

that

Troubleshooting Guide

General: This kit project is designed
right parts
are

niade
in most kit projects is
a mistake or broken
the circuit board, such

forth.

are

as

After

selected and installed

explained in

this

exactly

wire

in the connecti.on

as

DC

that

comes a mistake on

that

we

do

not

sell individual

for

experiments. The 1

or

capabilities

it

is

functioning

to

work

correctly

as designed.

as

specified

and all connections

manual. The # 1 cause

what

we

tend

to

take

of

external items

power,

speaker,

the

switches

board itself, such as:

of

problems

for

granted:

and so

056

if

the

to

is

of

Getting to

If

·you already, are
characteristics,
If

this kind

Know

you

of

receiver is

the Receiver

familiar

should

new

learn about. First, unlike

both

hear

met~rs

sidebands

and above)

of a CW

tune

"up"

signal becomes intelligible.

"down"
The receiver is

circuit.
local or
problem is minimized
of
battery operation is

to

the

point

at

which

quite

sensitive

It

is possible

shortwave,

for

to

overload

by

strong.
reduCing

circuit also is susceptible

often

with

direct-con~ersion

find

this

one

to·

to

you,

there

the

typical

or

the

To

tune

the

but

to

ham transceiver, you .will

SSB signal.

band

to

the

LSB (J

60-40

signal becomes ii1telligible.

uses a

AM

the

the

power

very

broadcast

circuit.

RF

gain

supply

receiver
be a good performer.
are several

To

tune

point

facts

USB (20

where the

meters), tune

simple

RF

stations,

Ordinarily,

slightly

hum,

this

..

This

which

preferable.

to

input

whether

kind

is

why

0 Incorrect part value

CJ

Reversed orientation

capacitor or

other

part

of

diode, IC,

which

in one direction only.

Bad

0

Specific Hints:

solder connection (cold

Be

sure

to

double-check the

0 Did you install required ju,mper wires?

0 Did you choose

correctly

from

Common Experiences and Remedies:

60

Hz

0 Strong

Antenna coax
and earth ground.

shield

AC hum even

needs to be

when

grounded

electrolytic

rt:lUSt

be

installed

joint

or bridge)

following:

the Band Parts Chart?

using

battery

to bot{!

power.

receiver

board

The variable Bandpass

control
simple and inexpensive a receiver.
sound quality
lower

bandpass

sound best

As you react

that

variable-oscillator
c:hange
critical

as

this receiver

of

several decades ago. From

must

be

of

the

signal.

frequency

with

a higher bandpass

to

the

performance

stability

and mechanical vibration) becomes progressively more

frequency

will

given

is increased. From

serve

to

as

how

you package and handle

is a

CW

signals are

feature

Simply

rarely

adjust

(counterclockwise),

frequency.

of

your

receiver, keep in mind

(susceptibility

160

well

as

many

20

of

meters

the

on

found

it

tuned

in best

while

to

temperature

through

simpler

up,

more

the

in so

for

the

with

SSB

will

30

meters,

superhets

attention

receiver.

best

a

0 Steady high-pitch hum

Receiver
counter

0 All CW signals are

Weak

or

.antenna is too close to a

or

other

microprocesser

chirpy

battery. See "DC

Power

computer,

device.

Supply

Something

Considerations."

0 Receiver oscillator seems unstable during·

Reasonable

stability

requires secure

mounting

frequency

first

bench

in

enclosure.

has

to

move!

.

tests.

What· Frequency

The

most

complex

past or present, is

displaying
T-KIT direct conversion receivers,

the

frequency.

well-calibrated dials

This T-KIT Module Board is designed

If

to solve problems yourself.

'!I

'

tl

'

:I

published in this manual.

our suggestions, please

consult

you are

1056-

to

encourage and help you

stumped

the

T-KIT Limited

20

after

following

Warranty

all

would be an entirely
just a few

dollars more,

controlled dual-conversion
The handiest

fact
regenerative receivers
oscillator frequency IS

Am

and

costly

the

mechanical

Of

or

digital displays.

different

would

circuitry..

about

direct-conversion

such

the

receiving

I On?

single

course, there

price class

as

section

or

electronic

even

best

become microprocessor-

T-KIT

1054

frequency

of

ANY

receiver,

system

could

multi-band

And,

of

be a series

models,

of

course,

receiver

which,

receivers (and also

and

1253)

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letting

used

this

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of

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..

21

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oscillator signal
one frequency range
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use any

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band. Once
one-time process
rewarding, regardless

style panel

The option
strictly
of
information on

for use

Communications Quarterly,

Concluding

First, thanks
this Model 1
new

receiver
Pick

Module Board receiver, and

digitally-accurate

bought

ONE

band,

you

designing.
of

trying a frequency

as a convenience

how

satisfactory

constructing a counter

with a NE602-type

for

056

standard

your

kits

banc,j,

in

for

this

receiver/transceiver

for

creating

of

interest

this

receiver

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your

decide

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creating a neat

of

whether

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varactor-tuned

use

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price

range.

your

creativity

a simple

in

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to

you.

order

set

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to

up

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to

dial scale

you

use classic

counter

experimenters.

this

will
circuit

conversion

Winter

in

1994,

T-KIT

by

Receiver

NE61

2/602

to

finish

ENJOY

it

for

to

listen

scale

covering

(After

use

for

all,

it

your

soldering iron

any

band,

segment

use

this

receiver, the

will

be

or

computer-

is included on

We

make

be. For

recent

specifically

receiver, see

pages

25-46.

TEN-TEC!

circuit

design sets a

direct-conversion

up

your

what

it

is! ·

to

is

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of

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no

intended

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think

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want

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board

claims

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Limited

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Inc.,

nor

policies

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All

components

defect

for

2.

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original

this

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credit

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birth

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4;

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TEC,

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proper

tools

&.

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replace

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supplied.

purchase.
option

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authorization;

repairs

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to

other

by

construed as

parts

of a kit

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refund,

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WARNING:

breathing

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with

as

all

printed

components

sorting

boxes

carefully.

an

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plaan

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to T -KIT

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credit

kit

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repair

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manufactured

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products.

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chargas.

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463-7172.

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1056-

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manuals

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T·KITS

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previous

purchasers.

periodic

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from

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