Swan SS-15, SS-100, SS-20 User Manual

I

It

I

t

I

I

PRELIMINARY

OPERATIONS

I\{ANUAL

to/78

I

'swAN

'

MoDEL SS-15, SS-100

SINGLE SIDEBAND

SS-200

AND

TRANSCEIVERS

Gl

Y

Swaff,\

ELECTRONICS

A

subsidiaty

Phone

ol Cublc

'

305 Alrporl

Oceanslde, CA

(7141757-7525

Cotporctlon

Road

92054

-

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-1-

TABLE OF

CONTENTS

Page

INTRODUCTION
SPEC I FICAT

IONS

INSTALLATION

General
Selection

Anplifier

RF
Power Source
Speaker

Cool

irtg
Antenna
External VFO
Microphone

Key

CW

or

External Relay

OPERATION

Control Functions

Control
Power 0n

Reception

'Blanker

,

Initial
Initial

Cal

ibrati:on
WWV
Nqise
Transnit

Transmit - CW
rrSfr

Meter
CW'sidetone
External"

CIRCUIT

THEORY OF OPEMTION

General

Transceiver
Receiver

RCVR MIXER
Noise
Filter
XTAL

IF

Amp
AGC/ALC
VFO
PROD DETECTOR
Carrier Osc.
Audio
Crystal Calibrator

8 V Regulator

Transmitter Circuits

Speech
Balanced Modulator

XTAL

IF Amp

XMIT Mixer

of Transceiver Model

Connections

!

Keyer

Connection

Settings

-

SSB

AdiuStment

Volume

Adjustment

VFO

Systen

Circuits

Bl-anker

Driver and

Noise

Filter

Anp

funp

FiLter

and 0ptions

Switch

1

3
4
4
4
5
6

8
8
8
9
I

o

10
10
16
L7
L7
L7

18
18
18*
19,
19'
19
20
20
20
?0

22
22
22

,,

1

LL

22
23
23

2tr

23

24

z4

24

24
24
26

z6

27

)'7

-ii-

Broadband
Pre

Drive

Dr

iver

Low

Pass

ALC

Directional

SS-100

Filter

and
VOX Control
Keyer
Sidetone
Carrier

Acces

Oscillator

Osci1lator.

sories

Driver

SS-200

Assembly
Detectoi

Amplifiers

z7

27

11
Lt

27

27
28
28
28
28

28
29

-iii-

,1

,rit

ILLUSTRATIONS

!t

i.-.J

A

FIGURE

DESCRIPTION

PAGE

l,

1
2
3

4
5,
6

Model $S-15
Models

PlrfR
Block

BLosk

.

Crystal Filter

SS-100

Connector

Diagran - Recedver

Diagram

-

Rear View

'and

SS-200

Wiring

-

Transnitter

Passband

-

Rear

Diagram

GraPh

View

5
5

7

2L

26
26

-tv-

INTRODUCTION

Models

-together

swan

The

i"i""ii

the amateur

be used

either

in

in

the
aeiig"ea with
and ifre

construction
g"drr"tt and
Ean be
they

The
tna SS-

expected

operated

are

SS-15

200^

provides

provide

solid-state

other

tuning,

things,

SWF.

foiver

"pp"i"u"a

with built-in
visions

switching

for tuning

for split-frequency

ss-15,

with

or

SSB

latest

the

reliability.

from tirese

fixed

a
10'0

circuits

broadband

protection

sideband

monitor,

in

ss-100

their

radio

modes.

CW

and

optional

bands

state-of-the-art

includes

Swan's

Ma1I,

filhtweight.and

station

and

input

20b

transceiveTs

powe{

in these

transmitter

from

open

selettion,

25

VOX,

a

WWr-and

operation.

ss-200

equipment

80,

These

40,

Swan

superb

years cif-

nobile.

or

watts

15

of

watts

P. E.

circuits
shorted

to

semi-break-in

crystal

KHz

external

single

20,

sideband

designed

?y

and

15

transceivers

solid-state

craftsmanship'

trouble

durable

P.E.P.

free

operation

units

and

P. respectively'

provide

that

antenna

for,

require

circuits,

operation

CW

calibrator

connections

VFO

Trans-

to

meters

10

are

circuits,

Tug-

whether

SS-100

the

The

among

no

with
with

pro-

-1-

Added

the

listed
Particul4[_attention
adequate

The

pertaining

enjoyment

wiLl

be realized

optional equipnent

with the

transceiverrs

shouLd be

DC.Bowet

foLLowing

to

is not available.

sections
instaLlation,

availabLe

of this manual-

shooting recommendations,
the Tabl"e
fic

information,

of

Contents

for

illustrations

through
for

specifications

given

operation,

and

parts

a

the listing

and

other

the usage

these
to

the

provide

circuit

1ist.

page

of

peitinent

of

sone of

transieivers.

are

reconmended.

power

suppLies if

infornation

theory, trouble-

Please

i6rer

nunbers of

information.

Those

to

speci-

a

O

sPEctFtcATtoNs

SS.15, SS.1OO AND SS.2OO TRANSCEIVERS

Frequency Ranges

Distortion
Unwanted
Suppression
Carrier Suppression.
Transmitter Output

AudioSidetone...
CWKeying..:...

Calibration,,r.,.

l.F.Selectivity

A.F.Selectivity...

Receiver

'

lmage Rejection

VSWR Protection,

Power

SS-200

SS-100 13.5

SS-15 13.5

Sideband

Sensitivity

Supply Requirementi

13.5

. 80 meters

.

40

meters 7I- 7.45 MHz

20

meters 14.0-14.45 MHz
15 meters 21.0-21.45
10

meters 28.O-29.7

WWV

Receive 10 MHz

Down approx.

.

Down more than 50

.
. Greater
. Output

2 to 1 typical.
For

.

Equivalent to

,

break-in with VOX,
.25kHz marker
. Crystal

...

bandwidth,
. Audio

300 to 3000 Hz + 3 dB. Audio out-

put

tion, to 3.2 ohm external speaker.

Less

.

impedance

noise ratio

Minimum

.

. .

ing

When VSWR is

.

.

power

tions,
tion

(nominal)

VDC

(nominal)

VDC

(nominal)

VDC

than

impedance

CW monitoring

response essentially flat

4

watts with less than 107o distor-

than

to better than

by 20%. Under these condi-

will

including

at 20 amps

Average

:

at 11 amps

Average

I

at

3.5-

-30

dB

dB

60

grid-block

lattice filter with 2.7 kHz

1.7

shape

0.5 microvolts at 50 ohms
for

signal

10 dB.

of

-55

dB at 30 MHz, increas.

-75

3:1

have infinite

open or short circuit.

6 amps SSB Transmit

0.5 amps Receive

amps

,3.5

0.5 amps Receive

2 amps

4.0 MHz

dB

50 ohm

factor.

dB at 3

or more, will cut

CW

CW
SSB

CW

MHz

MHz

nominal,

keying. Semi.

from

plus

noise

to

MHz.

protec-

VSWR

Transmit

Power

Input

Dimensions

SS-15
SS-100

SS-200

Approximate

SS-15.
SS-100
SS-200

. .,.12y2"Wx6"Hx1O%"D

Model

. .

ffi ,.'3,i, ttt'J.l';

bands.
rier: 100 watts P.E.P.

bands. CW: 100

bands. RTTY/SSTV: 100 watts
tinuous.
Model
rier: 15
bands.
bands.
continuous.

...12yr" Wx6"

....12%" Wx

Shipping Weight

..16|bs.

...181bs.

...19|bs.

-3.:

0.5 amps Receive

SS-200

*

suppressed

SSB,

car-

J,'ilH* : i I

watts

SS-15 - SSB, suppressed car.

CW:

P.E.P.

watts

15

watts DC input on all

RTTY/SSTV:

Hx11%"D

6" Hx12" D

minimum all

DC input on all

con-

minimum on

15 watts

all

GENERAL

Swan

The
designed
conslderations
process.

information.
SELECTION

SS-15,
for ease

Please

TRANSCEIVER

OF

INSTALLAT

SS-100

of

and steps

revieir

and

installation

SS-200

required

are

carefully

MODET

AND

ION

transceivers
anq operation.

during
following

the

OPTIONS

specifically

are

few basic

A

the installation

installation

The

basic
and if
given

(for

These

It is
exist
regulatibn
SS:200,

voltage
be
pow6r

SS-f 5
FoLlowing
current inb voitale
this

Provisions have
the use

is

is useful

side the
Consideration

200 watts

giien

section.

the ability

unit,

additional

to either

transceivers
irnportant

deirending

reqlirements
the current
and current

for the
supply
ani- S'S-1OO,

paragriphs in

of an

wheir it

Arnerican

SS-15,
thA

P.E.P.).

to note

on

use,of

provides the

been

external

to

may be

provides

power- input

SS-100-

require

which

requirenent

source

the

and

regulation

nade

VFO.

work

is

phone

split.frequency.

desired

given

(for

a

that

rnodel

nust

is not

of

one

necessary

PS-20

this

in

bands

to the

power input

a

is desired,

100 watts

power source

different

is_ usedr

observed.

be

is

available

Swanrs

can be

section

requirements.

design

the

advantage

The

work

to

and in

use

current

-and_spe-cific

Amps.

20

power supplies.

power requirenents

used

discuss

of

foreign
sone_CW

of

watts

15

9{

consideration
P.E.P.)

LZ tO

of

In the

If al,adequate

(..rotrsideration

r

for

specific

the
for using

(Spfit-frequency

SSB
app]-ig"!ioqs)

Swanrs

or the

volts

15

requirements

yo1!"g9

case

all

sure

Be

transceiver

DX

Model

of

The

for

units.

voltage,
to review

a

second

stations

SS-208.

P.F.P.,

be-

may

SS-200

DC.

the

[ry- -

PS,-10

the

for

operation

out.

r -

VFO

A number

transceivers.

or

the

information.

of accessory

Swan

It is'

factory

items

recommended

Oceanside,

in

are

-4-

available

that

you

California

use

for
contact

for

with
yo0r

additional

these
Swan

three

dealer

RF AMPLIFIER

Model

The
case.
coaxial
tr".ior

Cft"t
one can

this

SS-15

Proper

jumper

oit th"

jumper

made

be

CONNECTIONS

contains

installation

cable

rear

panel.

is^in

from

the

between

place.

RG-58U.

RF Amplifier

irivolvei

IN and

the

(See

Figure

If the

inside

only

the

OUT LINEAR

1).

jumper

transceiver

the

connection

AMP

Check.to.determine

missing

is

ANT'NiIA

'

':t"

i

I

t'

of a

coax con-

or

-1

lost,

d;;jr

ffi

pvct

0C

In either

^o""i"atOtt

output
cabies
LINEAR
i["i"
seated

connections
and
AMP

i"p"t

in

Model

the

rear

itt"
corinectors

conn"itotr.

output

and

rear

the

1

ss-200,

transceiver.

Amplifier.are

aligned

are-

Figure-2).

ss-100

panel

oi

lltg

which

FIGURE

or
of the
RF

(See

connections

panel connectors.

the

are

Amplifier

RF

made

with

the

Check

properly

input

The

using

IN

to

coaxial

and

determine

connected

will

aTd-

OUT

be

that

and

FIGURE

-5-

2

The

transceiver

SS-100 or SS-200
SS-200 RF Anplifier is
care that the

seated
Figure 2),
removed.
RF
ceiver
tion or control

and
modified from
Amplifier with the correct

and

(If

Amplifier

will

possible

connecting

can be

at any tine following

power

The

coaxial

jumper

the

mounted in

is

operate as

and

pernanent

SS-100 to

?

nodified
mounted

connector

the

jumper

a- SS-15 but will

be easily oil6itlirven

can

danage). The

fron a

place

in

for

the

input and output coax

cable used

is left

place

a SS-200 by

unit.

connected

on

SS-15

purchase.

on

the

RF Amplifier is

for

and a SS-100 or

rear

the

+o!

transceiver

just

panel,

give

causr.ng

replacing the

either

to

rear

cables.

the

a

Model

The SS-100

panel,

properly

(See

SS-15

any ALC
can also

must be

the trans-

indica-

distortion

be

RF

or

taking

SS-200

POWER

When using
output cable

the- rear
cord to 120

SS-100

and
power

A

grbund)
6e al1or^red to
nay

regulation at the
load
volts and
more

formance

is required
that
vo,ltage re-gulation
naximum
operational
connections are

SOURCE

tlie

supply.

power

occur

the
than

fu1l

a Swan

from

panel

transceivers

Model SS-200

supply
is'ieQuired.

if

input

with little

15 volts.

as

power

cuirent

of the

VAC. It should

or a battery

-exceed

the input

voltage

listed in
at the

output
requirements

nodes.

shown in

power
the

DC

DC
measurernents.

-

supply with the

power

transceiver.

require the

transceiver

Undei"

15 volts.

voltage

PWR

at the connector

or no load the

In order

the transceiver
PWR

in the

proper

The

supply into the

be

source of,

no circunstance

connector

to obtain

connector

CW

for

Figure 3.

transceiver,

DC

Connect

noted that

Swan

Unreliable

drops nuch below

DC

Model

requires

IZ to

should

input

I

s

at fu1l

mode by

following

The

three transceivers

the

PWR connector

the

Models SS-15

the

PS-10

a Swan

15

should the

transceiver

be such

would be

voltage
specified
specification

load.

used

for full

plug

PWR connector

lrower

powelr supply
Model"

volts DC

17, volts.

that

greater

would be

transceiver

,

It is recommended

table

voltage

the

supply

and

PS-20

(negative
input voltage
performance

Voltage

-

under

than

13.5
load

provides. the

various

in
and

-during

on

AC

full

11

no

per-

volts

speaker

Receive Current

SSB Average Current

Peak

SSB

CW

(Key

Current

Down)

(Current)

SS-15

MA

500

MA

800

Amp

2

Amp

2

-6-

ss-100

MA

5OO

Amp

3.5

11 Amp

Amp

11

20.0

ss-

5OO

Amp

6

AUtp

2 0

Arnp

2

0

MA

,r4*$:r*alii*Y

CINCH-JONES

PLUG

UNGROUNDED

SPEAKER

GREY

SO
SOLDER

in

CONN

.the

SPEAKER

Spe'aker

A

BLACK

RED

RED

provided

is

;";ii;;-ir-".io*piitnua'through

;;ppit

ohin^

cornbiiration

."Ur".

sbeaker

which

;;el;--;piiriai

nection

for'

Wiren

i".o**urded.'

is

the

a Swan

less

is

occur).

.""

'speaker

than

on

NN

#10 CABLE

FIGURE

Swan

3

power

DC PWR-

th-e

porygr supply

(Do

not-use

4

Figure

Dc PWR

the

ohms

as

shows,

3

connector

CHASSIS
GROUND

supply

cabinet

connector

is not

used

a speaker

permanent

proper

the

LzV

BATTERY

FUZE

con-

and

power

and

8

to

a 4

,

or speaker.,

Ene

damage

Eo

pin con-

_

,

n

D0 NgT
during
r*"f iFi"i
il'r;i;lly

listen

this

If
lead

ground either

transnit

.o"ia
uii"g

fbr no

detected,

is

irnrnediately.

'occur.

iudio

aAUTION

speaker

and/ot'

audio

the

or

look

1ead.

possible

'Following

level

weak

-7 -

audio

for

a

Audio

damage.

speaker

np

with

grounded

to

gradually

distortion.

talk-back

audio

the
hook-up,

ald

speaker

ING

COOL

The

transceiver

RF

the

blocked.

to
damaged.
life

ANTENNA

Amplifier

insure

expectancy.

should

heatsink at

Adequate

that the

Cool

operation

placed

be

ventilation nust

transistors

of

these

in

rear

the

in the linear

operating

the

of the transceiver

maintained

be

amplifiers

transistors

will

area

in this area

insure

to

is not

are

insure

not

greater

The transceiver
resistive
shorts

within

that

often

nobile

present

1oad,

in the antenna

2:1

SWR will

is designed to operate into a

but it is

antennas,

mismatches
with SWRfs greater
certain
for
power
quality
increased

given

be
For

on

OPERATI0N

It

is reconmended

ground

circumstances

regular

usage.

output

of the

above 2:L. It is

to antenna matching for sinplest trouble

further

when

discussion on

the transceiver is not

capability

transmitted signal

under

lightning.

Matching

when

SWR

between

anplifer.

best

the transceiverrs load impedance is also very import

an outboard

the transceiverrs output and the input to the

Keep it

operation.

protected

or high ShrR. Operation into most loads

quite

be

satisfactory. It

particularly

greater

than 2:L may be

and

in energencies, but is not recommended

GeneraLIy the

the

of

transmitter.

recommended

the effects

"meterrt.

that

the

antenna

linear anplifier

under

2:L and as

noninal 50 ohm

against accidental opens or

should

on the low frequency

than 2:L.

practical

higher

0peration

or useful under

the SWR,

In

some cases the

be noted

barrds,

into

the'lower

may also suffer as SWR is

that due consideration

of high SWR, see

disconnected

be

in

use as

used. Be sure to

is

close

to 1:1 as

precaution

a

free

operation.
the

or

switched to

check the

possible

loads

the

o"1

section

against

linear

for

EXTERNAL

The

Model SS-208 External
connector
procedures

VFO

on the rear

are required.

VFO

panel.

-8-

connected to the

1S

No

other

installation

ACCESSORY

steps

or

MICROPHONE

nicrophone

The

high

a

rnicrSphon^e

imiredance

with

phone plug must

schenatic

the

drawing.

SLEEVE

(KEYLINE)

TIP

KEYER

CW KEY

OR

input

circuit

iricrophone.

push:to-talk

a
be

wired

to

CONNECTION

the

to

good- quality

A

switch

RING

with

(AUDIO)

mate

transceiver

high.output.

recomnended.

is
the

SLEEVE

MIC

'j

is designed

The

shown

as

ack

TIP

for-

crystal

micro-

on

keyine

CW

The

r."y"i"."pab1'e

;;

k;;

it6v
fi"yl't
output

"p)

-!tit"a-

ind

iuLtfr

circuits

.t

transceiver

the

EXTERNAL

The EXT

u"itt-'nC
mode.

"Uo"".

RELAY

RELAY connector

a;i"t

This

application

it;-;;;;;;;

the external

the

circuits

in

of withstanding

average

an

solid-stat6

withstind

can

Connect

I

front

s

current

output

the

Panel.

on

ift"

voltage

such

as

i"o* this

relaY

or

tine
connection

controlling

that

connecti5n

1oad.

THIS COMPLETES

TURNING

THE AIR,

BALANCE

POWER'ON

SURE

BE

THIS

OF

transceiver

of

switching,

positive

the

br

key

rear

the

the

can

an

should

INSTALLATION.

THE

ATTEMPTING

AND

READ

TO

MANUAI.

can

+15

.volts

(key

tUl

6

be

voltage__and

keyer

panel

to

provides.

trinsceiver

be

used

for

outboard

not

AND

STUDY

used

be

DC-open

down)-.

sure

that,the

the

in

is

KEY

any

linear

exceed

BEFORE

GET

TO

TFIE

with

circuit

In using

keyer

currents

j

ack

+LZ

a

the

to

transmit
external
amplifier

anp

one

ON

any

on

+15
relay

'

into

a

.

-9-

OPEMT I

ON

Successful operation
transceivers
followed
procedures
again
made in
completed.

CONTROL

Before operating,
back and internal

Front

Main

by

to determine

the

FUNCTIONS

Panel:

Tuning

depends almost entirely

a thorough

offered in the

INSTALLATION section of this

review the
operator controls.

The rnain tuning knob

,

operating
at a 36:1
for
brated
is calibrated
scale

readings of the center

the Swan Models SS-15, SS-100

of

understanding

following

that

It

all of

following descriptions

frequency
ratio for

fast. The outer

for 3. 5 to

is

calibrated

necessary to

is

paragraphs. Review

installation

the

for 28,0

proper

on
of the simple

manual have been

changes

with a two

slow

scale on the

MHz ; and the

4.

0

to 29.7

for 40,

7, L4

add

sca1e.

installation

recorunendations

the transceiverrs

speed and

20 and

and 2L

and SS-200

operational

once

properly

of

I

speed contrgl

a 6:1 ratio

dial

inner

MHz.

15

front,

the

is cali-

scale

center

The

neters.

MHz to the

BAND

AF

and

RF

The outer edge
scale.
return

nearby.

frequency
59 1

The BAND switch selects
10 meter bands.
and

These
is the srnall

Counterclockwise

low
and
the

It is intended

a

to

It

changes.

for

KHz

pass filters are

low

are dual

audio. The

full clockwise

normal setting

-10-

of

the

frequency after

also useful

is

The dial

the middle

A11

gain

knob and

RF control

tuned

controls.

also the

the

is

position is

for

tuning

to

nain scale.

the

por^/er

proper

dial

permit

a tuning

in

narks

80, 40,

circuits'

selected.

is

a logging

is

easy

interpolating

The

power
off
the large

maxinum

"S"

and

search

very

are

20, 15

VFO

the

(audio)

AF

switch.

position and

knob

gain

meter

readings.

rapid

small

near

and

and

ffi-r|J

I

l

l

PRESELECTOR

MODE

PRESELECTOR

The

receiver.

the

rnarkings corresponding

the

to
band
should
in
later
used to

and then

be noted that

,other

in this

responses.

the

0n 5.5 MHz

PRESELECTOR to

the
quency

receiving its

6e
can be
speaker

The

(5.5

detected by

and

MODE

switch
operation.
sideband
band
selects
above.

for 80

for,20,

the

CW

peaks

It should

peaked for

section

operatorrs

NOTE

and 7.0

MHz it
the

MHz) .

The

own

a

some

"S"

selects

The NORM

and
and

15

opposite

selects

the

RF

the

tuned

be set

approximately

to the

maximum signal.
other
Suggestions

to

settings

are of

show how these

advantage.

is

,possible
transceiverrs
receiver

local

qscillator.

"hollow"

would in effect

sound

meter indication.

the

CW or

SSB

position selqcts

meters,

40

meters.

10

sideband

rnode of

CW

and' the

The

frorn that

operation.

circuits

selected

could

fered

can

to

tune

IF fre-

This

to the

modes

the

upperside-

position

OPP

ng,ted

in

It

result

be

of

lower

VFO SELECTOR

BLANKER

The VFO

with

position selects

"Att

SELECTOR

Swan

the

the internal
transceive
SPLIT

positibn selects

receive

operation

the external

and

If no external

VFO SELECTOR

the

switch

the tranirnitter

If

B

either

switch

Model

VFO.

VFO

switch

positioned

is

function.

BLANKER

The

level
in

for

ful1 counterctockwise
blanker
wise

just
Advancing
cause

on the

cross

band.

control

pulse

circuit.

to the

control

the

modulation

type

point

is used

SS-208

transceive

rrBrt

The

on the

the

VFO

NOTE

used

is

must

remain
or

establishes

noise

disables

control

The

to

too

by

in conjunction

External

operation

position

external

internal

VFO.

selects

VFO,

VFO

The
of

a+d

during

for transmit.

connected,

or

position

in

either

to
receiver

the

blanking-.

the

advanced

is

threshold

the

SPLIT

will

The
hoise

not

switch

clock-

suppress,unwanted

clockwise

far

other

strong

may

signals

A.

or

noise'

-

11-

If

the crystal

the noise
ceiver
because

will

the

blanker is

calibrator

be desensitized.
noise

crystal calibrator

it were a

noise

pulse.

NOTE

is

turned on

being operated,

blanker

reacts

square wave

This

to the

output

the re-

is

caused

as if

while

DIAL SET

MIC

MIC GAIN

METER

The

DIAL SET
tuning dial.
internal 25 KHz
frequency

The MIC

It is

when

jack

not necessary

operating

The MIC GAIN
from
of

the transceiver. Increase

nicrophone

the

clockwise to the
sionall-y

kicks upward. Further

increase will

but wilL

control transmitted output and

is used

This

crystal

to calibrate

done

is

by

calibrator as

standard.

for microphone

is

to remove

CW.

controls

the amount of audio

to the nodulation

point

that

the

not cause increased modulation

cause the AIC circuit

main

the

using

the

a

connection.

microphone

the

circuit

this" control

meter occa-

clockwise

react

to

prevent

flat-

topping.

meter

The

indicates

and the ALC action during

mit any

normal

upward

ALC action.

movement

is an indication

controls

operation

rnay

be

begins

frsrf

units during receive

transnit.

of

the

meter indicates

In

An upward movement

that the

too far clockwise. The ALC

set

(indicated

MIC GAIN

by upward

CW GAIN

or

deflection)

past

when the forward RF output power reaches

(5

watts

and

100

RF power

for the SS-15,

watts for

the

reaches 25eo

watts for

50

SS-200)

of this

or when

noninal

the

the

power.

t0

trans-

53

noninal

SS-100

reflected

The neter zero

the sensitivity

control is on

control

and factory adjusted.

A more

indications

understanding

detailed

follows and nay be useful

sone of

encountered conditions.

-12-

the

rrsrr

for

explanation

less

the

rear

panel

and

units is internal

of

the

neter's

for

frequently

wwf44+wr

li

/

I

il

{

:i

{

I

t

:l

i

ALC

The

that

at
antenna
SWRIs

"itttitt

type
the,

even

of

arnplif ier

alterei

action
3:1

wi1L

less
control

the

ALC

an

in,

25?-

at

the

Sl^tR

be'75%

net

l-imits

controL

transistors
attempt

reflected

maximum

net

6Tfrfrina1.
power

can
set

necessary

is

and should

increase

to

power
power

At

develoPg{

be

ALC'

by

to

means

to

higher

This

-protect
not

output

the

be

power.

the

some

For

amplifier

,i

,

noininal':power

seen

be

ated
the
of

13.5

by

rnaiirnum

this

vo1t3-

should

drive

CW

actually

laci<

ftt"

or

SlrlR

be

nay
neans

employed.

at"

chelkiitg,

of

sane

the
GAIN
supply

load

it

the

bn

low supply

ouilut

type

to

neter

the

microphone

or

norrnai

be

of indicaiion

low supply

quite

checi<

to

seitings

controls

voltage

inpedances

rnay'-not

aira

be

hence

neter.

voltage.

capability

amififier

s volts

fi.

faiL

except

,

-

voltage

ilrattigll

RF

the

the

In
good rule

a

the

of

were

al

i-:L

a

and

presented

able

no

This

to

indication

can

Fol'

characteristic

drops

over

supply

indicate

to

gain,
m?ry

in

oP€ration

fpr

.reduced

due

be

both.

of
these

power outqut

absence

of
CW

correct

of
thumb
DRIVE

for

SWR'

to

quite reach

will

accentu-

be

example,

from

30%

voltage

at

'

naximum

may

-power

either

to

0p91ati9n

other

and

is

and

if

quality

means

to

MIC

use

case's

other

nominal

'

CII

KET

OFF

DRIVE

-

CAL

the

Uv

to

tte

Drive

i"l

iiof-lfoCtwir"
;-;ligfit

KEY

The

"i-f."yi"'.

it is

key

the

This
brator.

upward

ack

i

necessary

not

circuit

switch

In

catibrator

signal-s

across

transnitter

DRIVE

CW

to

moveneirt

provides

transceiverrs

ftt[

during

controls

CAL

the

and-

on

is

each

control.

point that

the

the

unplug

to

SSB

the

position,

providing

band.

during

cI^I operation

Increase

during

CW

connection

deiign

the.key

operation'

internal

the

25

this

the

neter

shows

transmissions.

tlte

for

such

is

close

or

crystal
9-Iysta1

KHz

cali-

marker

is

con-

F"y

that

-

13-

PTT - VOX

VOX GAIN

VOX

ANT I

The

PTT - VOX

the PTT

In
into

push-to-ta1k

transceiver
the M0DE
Placing the PTT

VOX circuitry

switched
the

The

the
the

normal

The

the transceiver
phone picks

speaker.
shouLd be
ceiver transmits
fron the speaker.

ninimize its

speaker

transmit for

switch to CW

to transmit in

rnicrophone

sensitivity
VOX
point

ANTI

­where

LeveL of voice.

VOX

switch

position,

switch.

placed

is

-

and allows the transceiver

or

of the VOX circuit

GAIN control.

the transceiver

controls

will not

audio from the transceiver's

up
This
alternatley

control and the VOX

pick-up

controls
the transceiver can

SSB by

VOX

closing the key

on hudiir

Position

depressing the microphone

During

into transmit by

for each CW transmission.

switch

SSB by

It

the

VOX

transmit when

adjusted so

from

the transceiverrs

the

CW

in VOX

just

should

circuitry

fron the

the

circuitry.

VOX

be

operations,

positioning

enables

to

speaking

CW.

in

adjusted by

is

adjusted to

be

transmits

GAIN

tha!

voice

rnicrophone

with

so

the

control

the

but

placed

the

the
be

into

a

that

micro

trans

not

to

*"

-14-

BACK PANEL:

IIS''

METER

SIDETONE

INTERNAL

BaLanced

V0X,

VOX

CW Del.ay

SSB Delay

ZERO

LEVEL

CONTROLS:

Mod.

The

meter
this
the

This

controL

transceiver

control

heard

These
carrier.

MAINTENANCE
The

length

transnit
justed

reading

with

adjusts

the

in

speaker

controls

Recorunendations

section

of

foLlowingrthe

by- this

seni-break-in

circuitry.

Length

Thu

transnit

in

transmitted

of time

folLowing

ustng

control.

rrsrr

fgr
the

antenna

connected

the

during

adJust

time

for

that

the

their proper
the

Last

controL.

CW

operation

This

that the

the

VOX is adJusted

units

is

disconnected

to a

level

null

are

dumny
of CW

CW

transnissions.

of

offered

trans6eiver

CW

character

applies

usin!-

transceiver

Last

audio

zeroed

load.

sidetone

the

RF

adjustnent.

only

the

VoX

sound

by

this

by

in the

stays in

is'ad­$

srays

6r

to

ttStt

Meter

Sens.

rrS'f

The
This­may

meter

control,

be a4jgsted

to re-cal.ibrate

sensitivity
located

for
the

on the
different

a
frS'r

is

meter.

factory

main

circuit

setting

adjusted.

board,

used

or

-15-

INITIAL CONTROL

SETTINGS

Before

|

,

BAND

turaing

ts,.

PRESELECTOR

vF0

MODE

BLANKER

RF.
AF
MIC GAIN

GAIN

VOX

VOX

ANTI

I

l

i

CAt . OFF
CW DRIVE

*.*l

.:

i,;

s'ri::.

power

onr

Desired

Centei

set

of area

alL

of the folLowing

band

of

operation

narked for

A

NORM
Fu11 counterclockwise
Ful.l

Ful1
FulL

cLockwise

countercLockwise
counterclockwise

FuLl countercLockwise
Ful1

countercLockwise
OFF
FuLL

countercLockwise

controls

the

selected

as

band

shown:

Jill

I

DIAI

SET

In Line with

panel

narking

(LZ

orcLock)

CAUTION

Do

not change

in the transnit mode.

is

bands when the

transceivirr

-16-

,ffiry

i

INITIAL

Turn
background

POWER ON

power

on with the AF

noise is heard.

range for maximum noise.

adjust

and
ceiver

is

now

Although the

(noise

if

no
interfering
slightly

de-tuning the control
technique can be
the

meter will

"S'i

of the control..

main

the

fully

tuning

operational

PRESELECT0R

signal is

signal

splatter

used very

not

This

de-tuning

transnitter.

CAL I BRATION

Adjust the

KHz

100

CAL and adjust

DIAL

the

noted

that

calibration signals

KHz and 75
and 100 KHz signaLs.

using the

correct

the

main

increment

tuning

on

the DIAL SET control

SET cal-ibration

on L0 meters

as

KHz

signals

"S'r

neter

On

setting has been

the dial. Switch

When caLibrating

control

Peak

Connect

for

a

the
signal

advance the control until

and

PRESELECTOR within the band
antenna to

an

for receiving

is normally

present),

adjusted for maxinum

it can also be used to reduce

from very strong

from maximum.

effectively.

accurately calibrated

be

process

controL

to

nearest 25

the

the crystal calibrator

for a zero beat signal

nark on

will

it

DIAL SET- control

the

about

are

the front

possible

be

ttS"

one

on 10

the adjacent

25 KHz

made.

the transceiver

on the

band.

signals.

It

nearby

With

should

stations by

practice,

be

during the de-tuning

will

have no effect on the

KHz,50 KHz or

paneL.

to
is

It
find two or
rotated.

unit less than

meters

point

nake

verify that

to

The

trans-

signal

this

noted that

to

nearest

shouLd

be

more

The 25

the 50

a check

KHz

WW\T

RECEPTION

From

time to

internal

cedures

MHz.

10

MHz:

15 MHz:

time it

crystal

may be

calibrator

can be followed

Set the

zero

BAND

adjust the

and
at the 3.5'position.
tuning

Set the

4.0 MHz
at
dial

dial wiLl bring in

BAND
and

the 28

position.

will bring

desired to check
against

iln{ry. The

for tuning in

2I,

switch

to
PRESELECT0R

Minor

WhrV at

the

retuning

the
following tuning
either

main tuni.ng

for maximum signal

WWV.

main tuning

3.5,

switch

to

adjust the PRESELECTOR

Minor

W}fV.

in

the

retuning

for

of

accuracy

of the

10 MHz or

dial to

nain

the

of

dial

maximum signal

main tuning

the

pro-

15

to

-L7

-

NOISE

BLANKER

When noise is
advancing the

cuitry

is very effective

noise but

atmospheric

and

will be

advanced

found through

too
experimenting
prove

TRANSMIT

If not

Control

very worthwhile.

-

already

Settings and

section.

in a normal
clockwise
This is the

encountered,
BLANKER level control clockwise.

on ignition and

generally

ineffective

"static"

on the

experience.

fat,

under

cross

modulation

a variety

SSB

done,

pelform

Initial

Press

and natural

until the

optinum

push-to-talk switch

the

tone

meter

gain

kicks

setting.

for receive and transmitting
For VOX

into
GAIN
and

react to

operation,

microphone

the
controt

adjust the

sounds coning

adjustnents
operation

until

of

achieved.

is

position

in a natural

the transceiver

ANTI VOX control

from the

GAIN and

VOX

the

it may

be

on

some types

lower

If

may occur.

of noise and

steps described

the
Power

0n

of voice.

upward

The transceiver

SSB using

PTT

the

tone

goes into transnit.

until

transceiverrs

ANTI

possible

to eliminate

The

other types

of power line noise

bands.

the

0ptinum adjustment

BLANKER level control is

Some time

band conditions

in the

paragraphs of this

on the

Adjust the

occasional

on

microphone

MIC GAIN

is now

PTT.

-

VOX

of voice
the

switch

VOX circuitry

to

adjust the"Vgl

and

speaker.

VOX

until

satisfactory

balnker

pulse

of

spent

Initial

manual

and speak

voice

ready

;

V0X.

Speak

Stop talking
does not
Repeat

it

by

cir-

will

control

peaks.

the

VOX

-

TRANSMIT

Position

CW DRIVE control

the
Return
CW operation.
to NORM

CW

the

MODE switch

the

during

NOTE

"No

MODE

It will be necessal1z

receive

other

required

are
mitter circuits.
of audio

SSB.

when using

attenuation

There

receive

is turned

switch

until

operator

involving

"talk-backt'

If this

head

ahead

is enough

to compensate

up.

CW,

to

the

Norm.

to
and to

CW

-18-

adjustments

A snall

is

objectionable

is

phones

of the

audio

place the

m-eter

just
transceiver

The

to

for transnit.

trans-

the

amount

normal

some

add

phones.
power
if

position

in

the

key

begins

in

gain

down,

to
is now

the

'

adjust-

and

nove

ready

MODE

upward.

for

switch

,3irdry

j

f

.i

fr

f

To

operate

the

MODE

and

transceiver

will

return

character.

at

even

high

semi-break-in,

CW.

switch

will

receive in

to

The

speeds

to

switch

from receive

delay in switching

first

the

position the

Each

tirne the key is

about L/2 second

I'dit"

PTT

to transmit.

to

transmit is

will

-

VOX

switch

placed down,

following

only slightly

be

to VOX

the

The transceiver

last CW

the

so small

that

shortened.

CAUTION

to

In

order

insure

sistors,

transmit

minutes

full

mlrst

fan

Lure

to

long

D0 NOT

with

at a tirne.

power

be

158

to

temperature

typ-e't

fan

should

protect

life of

leave

the key

longer

for

used

to

degrees

the

at

work

the RF

Ampli{i*t:

the RF Anplifier's

transceiver

the

down

For

periods,

cool

F maximum.

transistor

quite

for more

applications

such-as

the heat

Measure

studs.

adequately

and
in

than

requiring

sink

A

tran-

CW

three

RTTY,

a

tenpera-

the

"whisper

most

in

cases.

METER ADJUSTMENT

"s"

Properradjustment

15 or

10,
foid or

(No

noise oi

meter).

zero

i'S"

extreme

The

sensitivit!

requires

20 rneters

conpletely

signit

Adjust

meter

causing

the S

reading"

the
of the

a calibrated

rrstr

the

of

connecting

and

detuning

shouLd-be

METER

Be

meter needle

"Srrmeter

signal

meter

the

zero

transceiver

the

transceiverrs

received so
ZERO control
sure

that

to be

the

forced

reading

generator for

is acconplished

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both voice

push-to-ta1k

voltage. It

keyer circuit

the

transmit

for

This

crisp keying

a

smoothing effect to

circuit utilizes

amplifies

proper

for

Ql03

provides
and CW). When
switch,

circuit.

is

key or

mixer

shaping

done

is

the audio

leve1 by the VOX GAIN

provides

the adjustments for ANTI-VOX

the VOX

Ql04
should

a bipolar transistor switch

is operated

Transistor

be noted that separate

keyer

(XMIT

of

the

rninimize

to
at

high CW speeds.

minimize the effects

an integrated circuit feed-

further arnplification of

VOX

CONTR0L transistor

and controls the on/off
MIX)
rise and fal1

keyed bandwidth

Q103, Ql04

received from the MIC

operation is

directly

Q105

stage.

provides

The design of

The

and

Ql05.

control.

not

from the

characteristics

shaper

Q103

transmit
controls

Q201

and

circuit

contact

of

that

still

-

SIDETONE OSCILLATOR

type

the
note
of output

internal-ly

CARRIER
described

the carrier oscillatorrs output

approxirnately 800
CW. This

to

using one

CW

mode only. Its output is

that

fa1l

is
is

OSCILLATOR

earlier in

is

within the

bipolar

connected

adjustable from the back

controlled

done to al1ow the

The

sidetone

transistor
to the speaker

by the

.

Although

this

Hz from the nornal 5.500

passband

RC constants.

the

section,

of

oscillator

q409.

filtered to

carrier oscillator

it should

frequency is shifted

frequency of
the crystal filter.

It

audio anplifier.
panel

is

enabled

is

produce a

and the

noted here

be

MHz when

carrier oscillator

the

an RC

phase

and keyed
good

The level

frequency is

circuit was
upward

transmitting

shift

in

clear

that

28-

ACCESSORIES

Power

PS-20

power

ps.l

0

ss-208

External

ss-168

WM-l500

Frequency

Design

Powir

Meter

AccuracY
DirectivitY

VFO

Firter

I N.LINE

Range

lmPedance

Ranses

.

lnsertion
Dimensions.

VSWR

Designed

Supply

su

. .

PS-20

20

models

ppry

;#::il

. .

molels

Plugs

. .

. .

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l,:"0?1i,i'fr:ln11Tt"'i,tilffi1,hil,

filter.

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. .

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. .

. .

.

.

. .

.

,

.

.

.

.

..

' - -

.'.'.'.-.6'112"

'

. .

primarily for

supplies

amps

directly

shape

1.28

to

2.0
MHz

50

ohm

50

S,o,ou*33"

lil

reverse)

(C)

0

reverse)

(D)

0
reverse)

Reads

watts

Better

Better

1.05:1
Deep

13.5
all

for

J..o*",

l;1,

into

for split

factor.

MHz,

30.0
slightly

with

500

to

1500

to

forward

less

or

High

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!

dB

30

x

than
than

(lncludes

the SS-200,

(nominal)

VDC

three

?lsi,l,,rlll

three

all

frequency

Replaces

be

may

reduced

the

at

solid'state

lB

state

solid
operation'

standard

to

up

used

accuracy-

:

ffiil1?;#J:"'n'i

(Forward

watts

(Forward and

watts

reverse

or

scale

full

Wide

4'314"
mounting

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6'31+"

x

knobs

feet,

and

weisht

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RF

l$ff**iil*].

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.

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MlrrEr?
5ER/E5
AND

DRIVER
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loss

(

PA|R

tr /ass

O fDrs EETTVEEN 15

FoR
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MATCHED

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S,PEC

VALUES

VALUES

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DETEC

600 SER|L

SERIE.5

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CAPACITANCE VALUES

2.ALL
OTHERWISE

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FOLLOWS:
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5ER/E5
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DRIVEE
AND 4UD|O'7OO

5ERIES
WATT A/VPL-/OOO

SELECTED FoR foss

4-

'

OTHERWISE

RESISTORS

A2ARD-

'
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i

fass

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55-15 SOLID

STATE

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TRAN5CEIVER

F"
ll

r;.

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