MFJ MFJ-9315 Instrucciones de uso

EF)

cub

QRP

Transceiver

Models:

MFJ-9315/17/20/30/40/80

CONSTRUCTION

MANUAL

CAUTION:

Read

All

Instructions

Before

Operating

Equipment

MFJ

ENTERPRISES,

INC.

300

Industrial

Park

Road

Starkville,

39759

USA

Tel:

662-323-5869

Fax:

662-323-6551

VERSION

2000

MFJ

ENTERPRISES,

INC.

Return

Policy

Kits

When

Not

Purchased

Directly

From

MFJ

Enterprises,

Inc.:

Before

continuing

any

further

with

your

MFJ

kit

check

with

your

Dealer

about

their

return

policy.

your

Dealer

allows

returns,

your

kit

must

returned

before

you

begin

construction.

Return

Policy

Kits

When

Purchased

Directly

From

MFJ

Enterprises,

Inc.:

Your

MFJ

kit

may

returned

the

factory

its

pre-assembled

condition

only.

The

reason

for

this

stipulation

is,

once

you

begin

installing

and

soldering

parts,

you

essentially

take

over

the

role

the

device's

manufacturer.

From

this

point

on,

neither

MFJ

nor

its

dealers

can

reasonably

held

accountable

for

the

quality

the

outcome

your

work.

Because

this,

MFJ

cannot

return

any

kit-in-progress

completed

work

warranty

item

for

any

reason

whatsoever.

you

are

new

inexperienced

kit

builder,

urge

you

read

the

manual

carefully

and

determine

whether

not

you're

ready

take

the

job.

you

wish

change

your

mind

and

return

your

kit,

you

may--but

you

must

before

you

begin

construction,

and

within

ten

(10)

working

days

the

time

arrives.

Enterprises,

Inc.

Warrants:

Your

kit

contains

each

item

specified

the

parts

list.

Missing

Parts:

you

determine,

during

your

pre-construction

inventory,

that

any

part

missing,

please

contact

MFJ

and

we'll

send

the

missing

item

you

free

charge.

However,

before

you

contact

MFI,

please

look

carefully

confirm

you

haven't

misread

the

marking

one

the

other

items

provided

with

the

kit.

Also,

make

certain

alternative

part

hasn't

been

substituted

for

the

item

you're

missing.

Ifa

specific

part

longer

available,

Engineering

has

determined

that

alternative

component

suitable,

MFJ

reserves

the

right

make

substitutions

any

time.

most

cases,

these

changes

will

clearly

noted

addendum

the

manual.

Defective

Parts:

Today's

electronic

parts

are

physically

and

electrically

resilient,

and

defective

components

are

rare.

However,

you

discover

item

during

your

pre-construction

inventory

that's

obviously

broken

unserviceable,

we'll

replace

it.

Just

return

the

part

MFJ

the

address

below

accompanied

with

explanation.

Upon

receipt,

we'll

test

it.

it's

defective

and

appears

unused,

we'll

ship

you

new

one

right

away

charge.

Missing

Defective

Parts

After

You

Begin

Assembly:

Parts

and

materials

lost

damaged

after

construction

begins

are

not

covered

under

the

terms

this

warranty.

However,

most

parts

supplied

with

MFJ

kits

are

relatively

inexpensive

and

MFJ

can

replace

them

for

reasonable

charge.

Simply

contact

the

factory

with

complete

description.

We'll

process

your

order

quickly

and

get

you

back

track.

Factory

Repair

After

You

Begin

Assembly:

Kits-in

progress

and

completed

kits

are

specifically

excluded

from

coverage

the

MFJ

warranty.

However,

service

customers,

technicians

are

available

evaluate

and

repair

malfunctioning

kits

for

minimum

service

fee

$18.00

hour

rate)

plus

$7.00

shipping

and

handling

(prices

subject

change).

qualify

for

repair

service,

your

kit

must

fully

completed,

unmodified,

and

the

printed

circuit

board

assembled

using

rosin-core

solder.

the

event

your

repair

will

require

than

hour

fix

(or

$36.00,

subject

change),

our

technicians

will

contact

you

advance

telephone

before

performing

the

work.

Defective

units

should

shipped

prepaid

to:

MF]

Enterprises,

Inc.

300

Industrial

Park

Road

Starkville,

39759

When

shipping,

pack

your

kit

well

and

include

the

minimum

payment

plus

shipping

and

handling

charges

($25.00

total).

work

can

performed

without

pre-payment.

Also,

provide

valid

UPS

return

address

and

day

time

phone

number

where

you

may

reached.

MFJ

cub

ORP

Transceiver

Construction

Manual

INTRODUCTION

This

manual

contains

the

information

you

need

build

your

kit.

The

cub

unique

because

uses

both

surface-mount

(SMD)

and

conventional

electronic

components.

From

electrical

standpoint,

surface-mount

circuitry

has

many

advantages.

However,

SMD

parts

are

too

tiny

for

most

people

handle

kit.

MFJ

solves

this

problem

pre-installing

many

the

kit's

parts

using

our

automated

SMD

assembly

equipment.

These

machines

accomplish--in

matter

minutes--what

would

take

trained

assembler

entire

day

complete

hand.

Then,

once

the

SMD

work

complete,

hand

the

project

over

you.

You'll

begin

inventorying

the

parts

packages

ensure

everything

you

need

included.

Parts

are

grouped

into

two

categories.

Some

are

generic

components

such

switches,

jacks,

controls,

trimmers,

and

the

transistor.

The

rest

are

frequency-determining

coils,

capacitors,

and

crystals

that

determine

the

band

operation.

complete

your

cub,

you'll

need

only

conventional

bench

tools

and

general

knowledge

through-hole

pc-

construction

methods.

help

you

along,

this

manual

provides

step-by-step

—

guidance

for

each

operation.

When

construction

complete,

walks

you

inspection,

testing,

and

tuning.

Finally,

shows

you

how

install

the

case

and

add

the

finishing

touches.

few

short

hours,

you'll

taking

the

airwaves

with

your

new

radio.

BEFORE

YOU

START

BUILDING

Work

Area:

You'll

need

clean,

smooth,

and

well-lighted

area--a

place

where

you

can

handle

small

parts

without

losing

them.

sheet

white

poster

board

makes

good

construction

surface.

Well-diffused

overhead

lighting

and

supplemental

high-intensity

desk

lamp

provide

strong

lighting

for

close-up

work.

sure

keep

the

work

area

free

clutter

and

discarded

wire

ends.

Tools

and

Supplies:

Here's

checklist

the

tools

and

supplies

you'll

need:

Low-wattage

soldering

iron

with

narrow

chisel

tip

conical

tip.

Soldering

iron

holder

with

moistened

cleaning

sponge.

60/40

63/37

alloy

solder

.02"-.032"

diameter,

rosin

"no-clean"

flux.

Small

needle-nose

pliers

surgical

hemostat.

Diagonal

"nippy"

wire

cutters.

Solder

sucker

desoldering

braid.

Magnifying

glass.

Ood

RT ee

MFJ

cub

ORP

Transceiver

Construction

Manual

These

items

are

needed

for

testing

and

tune-up:

QRP-type

power

meter

VSWR

bridge

(or

5mm

LED,

any

color).

[

ohm

dummy

load

(or

two

watt

100

ohm

carbon-film

resistors).

Telegraph

key

keyer

with

3.5mm

plug

installed.

8-40

ohm

headphones

extension

speaker

with

3.5mm

stereo

plug

installed.

13.8V

400

regulated

power

source.

Low

VSWR

antenna

cut

for

your

radio's

band

operation.

Low

level

signal

source

tuned

the

radio's

band

operation.

Kit

insulated

tuning

tools.

Avoiding

Errors:

Experience

shows

there

are

four

common

mistakes

builders

make.

Avoid

these,

and

your

kit

should

work

the

first

try!

Installing

Wrong

Part:

Pre-sort

components

before

you

begin

and

double-

check

the

numbers

stamped

each

part

before

installing.

Reversing

Polarized

Keyed

Parts:

ICs,

transistors,

diodes,

and

electrolytic

capacitors

must

installed

only

one

way.

Always

double-check

before

inserting!

Bad

Solder

Connections:

Constantly

inspect

for

cold

solder

joints

solder

bridges

between

pads

while

you

work.

Omitting

Part:

Check

off

each

step

the

manual

you

complete

it.

Soldering

Tips:

Cleanliness

and

good

heat

distribution

are

the

secrets

professional

soldering.

Before

you

install

each

part,

inspect

leads

for

oxidation.

the

surface

looks

dull,

burnish

with

pencil

eraser

glass-fiber

brush

(available

Radio

Shack).

When

soldering,

let

the

iron

tip

contact

both

lead

and

pad

for

about

one

second

before

feeding

solder.

Solder

should

flow

smoothly

into

platethrough

holes,

wetting

all

exposed

surfaces.

Apply

solder

sparingly

and

avoid

touching

solder

wire

directly

the

hot

iron

tip.

Desoldering

Tips:

you

make

mistake

and

need

remove

part,

grasp

the

component

lead

with

hemostats

and

heat

the

pad

from

the

opposite

side.

Pull

gently--the

lead

should

come

out

(repeat

for

the

other

lead).

solder

fills

behind,

reheat

the

pad

and

extract

with

solder-sucker

solder

wick.

Parts

damaged

during

extraction

should

replaced

(multilayer

capacitors

are

especially

vulnerable

removal

damage).

MEFJ

cub

QRP

Transceiver

Construction

Manual

PARTS

INVENTORY

After

opening

you

MFJ

cub

box,

check

for

the

following.

Printed

circuit

board

(surface

mount

parts

installed)

P/N:

40-9300-1SM

2.1mm

power

plug

with

cable

P/N:

620-8321

Metal

chassis

P/N:

800-9300

Metal

top

P/N:

804-9300

Construction

manual

P/N:

925-9300-1

Operation

manual

P/N:

925-9300-2

Parts

bag

The

parts

list

(bagged

parts)

presented

three

parts.

First,

you'll

identify

and

inventory

generic

parts--items

common

all

cub

transceivers.

Next,

you'll

inventory

frequency-determining

parts--those

items

that

determine

band

coverage.

Then,

you’ll

inventory

the

parts

for

installing

and

putting

the

final

touches

your

enclosure.

Identify

each

part

carefully,

consulting

the

manual

for

color

codes

special

markings.

When

sorting

capacitors,

look

for

value

number

code

printed

the

body:

Disc

Ceramic

Polystyrene

[———

Multilayer

———

(4.7

pF)

(680

pF)

Q7pF)

(270pF)

(.001

uF)

Use

the

following

inventory

list

arrange

parts

for

rapid

identification

during

construction.

you

discover

missing

damaged

item,

refer

the

warranty

section

for

replacement

instructions.

Begin

unpacking

the

kit's

generic

parts.

MFI

cub

ORP

Transceiver

Construction

Manual

2N5109

transistor

;

00-0011

[Printcircuitboard

—

aah

or)

iS)

D|D

$))

50-0194

62-9320

OOi™N

Next,

find

the

band-determining

parts

and

check

contents

against

the

appropriate

parts

list:

MHz

crystal

#22

enamel

wire,

24”

length

MEFJ

cub

ORP

Transceiver

Construction

Manual

Designation

3.3}

| 1

C13,C46

200-00033-1_

multilayer

capacitor

220-0010

[15

[c44,

Cs:

220-0015

ioe

ame

yer

cal

220-0022

multilayer

capacitor

C45,C47

220-0056

220-0082

220-0100

220-0150

C53,C55,C56,C57

220-0180

220-0270

220-0560

| |

470

polystrerene

capacitor

240-0470

1.5uHmoldedinductor

L8,

401-3150

402-3401

T37-6toroidform

‘for

L10,L11

403-1437

[

[10MHzcrystal

sss:

Y2,Y3,Y4,Y5

405-0065

#22

enamel

wire,

24”

length

forL10,L11__—|:

870-3022R

ratetets

tetera

P/N

00-00033-1

EER

ogee.

T37-2

toroid

form

for

L10,L11

MHz

crystal

1,Y2,Y3,¥4,Y5

405-0065

MFJ

cub

ORP

Transceiver

Construction

Manual

multilayer

capacitor

100

multilayer

capacitor

ilaye

multilayer

capacitor

470

multilayer

capacitor

C53,C55,C56,C57

220-0470

__|

pleipieiaia}o)s

oO)

—

ct.

—

{°)

“%

820

multilayer

capacitor

|C15

220-0820

|__|

470

polystrerene

capacitor

240-0470

680

7 e

capaci

3.3uH

molded

inductor

L8_

401-3330

4.7uH

molded

inductor

[LO

401-3470

403-1037

870-3024R

;

MFJ

cub

QRP

Transceiver

Construction

Manual

eoete

220-1220

([68uHslug-tunedcol

L1,L2,L6,L7___—

402-3406

403-1037

__|

#24

enamel

wire,

36”

length

654-0500

Self-tapping

screw

(black

656S-0375B-A

4-40x%"

hex

spacer

716B-0250

4-40

KEP

nuts

705-0440-K

%”

knob

760-0023

%”

knob

760-0035

Panel

nut

for

16mm

pot

705-7075

Panel

washer

for

16mm

pot

710-2550

MFJ

cub

QRP

Transceiver

Construction

Manual

PARTS

PLACEMENT

DIAGRAM

Bagge

Mele

Ses

BIPEE

C=)

[5]

[8]

;

aaa

(aa)

IIE

[a)[a)

Oe.

eles

P/N:

862-9320

Rev

STEP-BY-STEP

ASSEMBLY

Terminology:

When

you

read

the

term

install,

this

means

locate,

identify,

dress

the

leads,

and

insert

the

part

into

its

mounting

holes

the

board.

Once

component

mounted,

bend

each

lead

over

and

use

sharp

side-cutters

clip

off

the

excess.

Make

sure

lead

ends

don't

touch

other

pads,

tracks,

the

groundplane

surface

(see

below).

The

term

solder

means

solder

the

part's

leads

place,

inspect

for

flaws

solder

bridges,

and

nip

off

any

protruding

lead

with

sharp

pair

side

cutters.

All

solder

connections

will

made

the

bottom

(groundplane)

side

the

board.

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