AMERITRON AL-80A Bedienungsanleitung

AMERITRON

AL-80A

HIGH

POWER

LINEAR

AMPLIFIER

INSTRUCTION

MANUAL

The

Ameritron

AL-80A

Linear

Amplifier

designed

for

over

1000

Watts

output

SSB

PEP

(850

Watts

output

CW)

with

high

efficiency

and

total

reliability.

The

AL-80A

covers

the

amateur

radio

bands

160

through

meters.

also

features

wide

frequency

coverage

for

MARS

and

other

services

authorized

operate

high

power.

The

AL-80A

uses

Eimac

3-500Z

high-mu

triode

class

ground¬

grid

circuit.

built-in

ALC

circuit

prevents

the

amplifier

output

from

flat-topping

the

exciter

gain

inadvertantly

set

too

high.

The

AL-80A

factory

wired

for

117V,

50/60

primary

line

voltage.

DIVrSION

PRIME

INSTRUMENTS,

INC.

9805

Walford

Avenue

•

Cleveland,

Ohio

44102

Printed

U.S.A.

F-1035

VENTILATION

The

AL-80A

ventilation

system

has

been

designed

and

tested

maintain

tube

seal

temperatures

safely

below

the

tube

manufacturer’s

rating

when

operated

within

our

guidelines.

insure

proper

ventilation

your

installation,

observe

the

following:

not

block

restrict

the

ventilation

holes

the

cover.

The

exhaust

air

flow

over

CFM.

not

“assist”

the

air

flow

unless

the

fan

used

exceeds

the

AL-80A

blower

CFM

factor

2:1.

not

mount

additional

fans

the

AL-80A

cabinet.

The

exhaust

air

will

become

quite

warm

high

power

levels.

not

place

any

heat

sensitive

objects

the

exhaust

air

stream.

POWER

CONNECTIONS

The

AL-80A

supplied

with

NEMA

5-15P

plug

for

117

VAC

operation.

The

AL-80A

can

modified

for

234

VAC

opera¬

tion.

you

desire

make

this

modification,

two

jumper

wires

must

moved

new

locations

the

terminal

block,

(see

illustration

below)

The

terminal

block

located

the

left

side

the

rear

panel.

The

wiring

between

the

fuse

box

and

the

amplifier

A.C.

outlet

must

No.

gauge

larger

order

supply

the

cur¬

rent

required

(15

amperes)

without

significant

drop

line

voltage.

The

117V

outlet

should

fused

for

amperes.

ALC

Use

shielded

audio-type

cable

connect

the

0-20

volt

negative

ALC

voltage

the

transmitter

ALC

input.

Consult

the

transmitter

manual

for

proper

connection

details.

The

amplifier

must

properly

tuned

before

adjusting

the

ALC.

Proper

adjustment

achieved

follows:

Set

the

MULTIMETER

switch

the

position.

Set

the

transmitter

audio

control

about

20%

higher

than

normal.

Speak

into

the

microphone

normal

tone

voice

and

observe

the

reading

the

0-2000

R.F.

Watts

scale.

Adjust

the

ALC

ADJ

control

the

rear

panel

until

the

amplifier

not

clipping

scope.

scope

not

available,

adjust

the

ALC

control

the

audio

peaks

not

exceed

the

single

tone

output

1000

watts.

METERING

FUNCTIONS

The

AL-80A

has

two

illuminated

panel

meters.

The

Grid

Cur¬

rent

meter

provides

continous

reading

grid

current.

This

exclusive

feature

Ameritron

amplifiers.

Grid

current

will

indicate

proper

operation

the

amplifier

better

than

any

other

parameter.

not

exceed

200

this

meter

dur¬

ing

operation

the

amplifier.

The

other

meter

reads

Plate

Voltage

(HV),

Plate

Current

(Ip),

Peak

R.F.

Watts

(PO)

and

ALC.

The

functions

are

explained

follows:

PLATE

VOLTAGE

(HV):

Read

D.C.

Plate

Voltage

the

0-3500

Volt

scale.

This

scale

100

volts

per

division.

Nor¬

mal

voltages

are

3100

volts

load,

2700

volts

full

load.

plate

current

(Ip):

Read

Plate

Current

the

0-700

scale.

This

scale

per

division.

The

average

operating

current

rating

the

3-500z

400

maximum.

PEAK

R.F.

WATTS

(PO):

Read

Peak

R.F.

Watts

the

0-2000

scale.

The

scale

has

watt

divisions

below

1000

watts

and

100

watt

divisions

above

1000

watts.

ALC:

this

position

the

meter

indicates

the

ALC

detector

voltage.

provides

relative

drive

level

indication

200

watts

full

scale.

The

approximate

drive

level

(average,

not

PEP)

can

estimated

dividing

the

Peak

R.F.

Watts

scale

10.

IMPORTANT

not

make

any

modifications

the

AL-80A

cir¬

cuit

before

checking

with

our

engineering

staff.

Improper

changes

may

damage

the

AL-80A

and

void

the

warranty.

Connection

Diagram

Antenno

OUT

RFOUT

RELAY

ALC

Trans

mit

Transceiver

INSTALLATION

Connect

the

output

the

transmitter

the

connector

the

rear

the

AL-80A

with

ohm

coax.

Con¬

nect

the

existing

station

antenna

system

the

OUT

con¬

nector

the

AL-80A

with

RG-8

type

coax.

Connect

the

RELAY

phono

jack

the

rear

the

AL-80A

the

normal¬

open

terminals

the

RELAY

jack

the

transmitter.

The

RELAY

jack

the

AL-80A

has

positive

VDC

open

circuit

and

provides

100

MAof

current

when

pulled

ground.

Con¬

nect

short

ground

lead

possible

from

good

earth

ground

the

GND

terminal.

The

12V

connection

the

rear

panel

provides

VDC

100

maximum

operate

external

dial

lamps

accessories.

POWER

OPERATE-

SWITCH

STANDBY

SWITCH

TUNING

INSTRUCTIONS

the

instructions

numerical

order.

the

various

meter

readings

are

different

than

indicated

the

instructions,

check

the

connections

from

the

exciter

the

amplifier

and

make

sure

they

are

correct.

Consult

the

manual

for

the

exciter

necessary.

Set

the

AL-80A

front

panel

switches

follows:

PWR

OFF

OPR

STBY

MULTIMETER

Plug

the

A.C.

line

cord

into

the

proper

voltage

outlet.

The

AL-80A

factory

wired

for

117VAC

50/60

operation.

Set

the

PWR-OFF

switch

PWR.

The

meter

lamps

should

light

and

the

blower

should

start.

Read

the

0-3500V

scale

the

multimeter.

should

indicate

3100

volts

nominal.

With

the

amplifier

still

standby,

tune

the

exciter

into

the

normal

ohm

load

according

the

manufacturer’s

instructions.

Turn

the

exciter

drive

fully

down

after

tuning.

Place

the

bandswitch

the

same

band

the

exciter,

the

PLATE

tuning

control

the

dial

range

for

the

band

selected

and

the

LOAD

control

the

recommended

point

for

the

band

use.

With

the

exciter

drive

still

zero,

place

the

MULTIMETER

switch

the

position.

Observe

the

0-700

scale.

should

read

zero.

Place

the

STBY-OPR

switch

the

OPR

position.

Key

the

exciter

(no

drive)

and

observe

the

plate

current

the

0-700

scale.

Plate

current

should

now

read

between

and

100

mA.

Apply

only

enough

drive

indicate

grid

current

than

200

mA.

Tune

the

PLATE

control

for

maximum

grid

current.

normal

for

the

plate

current

dip

this

point.

the

grid

current

goes

over

100

reduce

the

drive

once.

Unkey

the

exciter.

Place

the

MULTIMETER

switch

the

position

and

observe

the

0-2000

peak

R.F.

watts

scale.

Apply

the

same

drive

again

and

adjust

the

LOAD

and

PLATE

controls

for

maximum

output

the

0-2000

scale.

10.

Increase

the

drive

until

125mA

grid

current

indicated.

Adjust

the

LOAD

and

PLATE

controls

again

for

max¬

imum

output.

The

grid

current

will

lower

now.

11.

Advance

the

drive

200

grid

current.

Adjust

the

LOAD

and

PLATE

controls

for

maximum

output

power.

(Repeat

this

step

twice.)

The

output

should

around

1000

watts

now

with

100

watts

exciter

power.

12.

Apply

enough

drive

indicate

either

1000

watts

output

power

200

grid

current.

Re-peak

the

LOAD

and

PLATE

controls.

The

grid

current

must

not

over

200

mA,

the

plate

current

over

550mA

the

output

over

1200

watts.

13.

operation

the

drive

power

should

reduced

until

the

plate

current

400

less.

For

SSB

operation

the

modulation

crest

should

not

exceed

400

plate

current,

100

grid

current

1200

watts

PEP

output.

TUNING

CHART

(Typical)

FREQUENCY

BANDSWITCH

PLATE

CONTROL

LOAD

CONTROL

1.85

160

3.5

3.8

7.2

14.2

21.2

-:'r2

4.5

*28.7

AL-80AX

(export

model)

The

AL-80A

will

operate

with

full

output

all

WARC

bands

except

24.5

MHz.

The

AL-80AX

(export

model)

will

operate

with

full

output

all

WARC

bands.

STANDARD

FREQUENCY

COVERAGE

AL-80A

AL-80AX

160

meters

1.8-2.0

MHz

160

meters

1.8-2.0

MHz

meters

3.3-4.4

MHz

meters

3.3-4.4

MHz

meters

6.3-8

MHz

meters

6.3-8.3

MHz

meters

9.5-15.5

MHz

meters

9.5-15.5

MHz

meters

15.5-21.5

MHz

meters

15.5-21.5

MHz

meters

24-29

MHz

i»

AL-80A

SCHEMATIC

^r*

Tr»

Bit,

»f>./Wht

Bit,

•

Blk/Wht

BIkjJwht

t«d

HVM

-T-T-T

BANDSWITCH

SHOWN

160

MtTE*

POSITION

REAR

VIEW

AL-80A

Tuned

Input

Chart

Input

18pf

Output

19pf

160

3300

(AR-690)

28t.

(FP-149)

2700

(AR-689)

1000

(AR-176)

21t.

(FP-150)

820

(AR-381)

500

(AR-691)

I4'',t.

(FP-151)

360

(AR-683)

220

{AR-175)

9>,t.

(FP-152)

120

(AR-606)

150

(AR-396)

5'.t.

(FP-153)

(AR-395)

10*

100

(AR-174)

3'.t.

(FP-154)

(AR-404)

*Export

model.s

only

PARTS

LIST

1,2,3

4,5

6,7,8,9

10,11,12

15,17

18,19

1,2

FP-160

FP-161

FP-162

FP-163

TA-450S

Fan

ftA30390-10

(AR-138)

.01

50V

disc

(AR-416)

.01

1.4

disc

(AR-122

.01

disc

(AR-121)

.001

7.5

disc

(AR-224)

Plate

tuning

250

.075"

spacing

variable

(AR-112)

800

1.2

variable

{AR-573)

170

N750,850

series

doorknob

(AR-559)

500

pf,

850

series

doorknob

(AR-412)

See

input

chart

Green

L.E.D.

(AR-523)

amp

fuse

3AG

{AR-150)

Meter

board

assembly

H.V.

rectifier

board

assanbly

P.O./ALC

detector

board

assenbly

H.V.

filter

capacitor

board

assembly

H.F.

coil

ga.

tin

plated

(FP-164)

L.F.

coil

I.D.

#12

airdux

(AR-669)

"L"

coil

200-2

toroidal

core

(FP-165)

See

input

chart

Multimeter,

0-1

420

ohm

{AR-692)

Grid

meter,

0-1

450

ohm

(AR-693)

Parasitic

choke

and

plate

cap

assembly

(FP-11

47K

ohm,

watt

carbon

(AR-402)

ohm,

watt

carbon

(AR-403)

Filament

choke

(FP-115)

Plate

Choke

(FP-139)

Safety

choke

(AR-162)

PDT

lOA

relay,

VDC

(AR-139)

Bandswitch

(AR-136-2)

Rocker

switch

(AR-147)

Interlock

switch

(AR-247)

Power

transformer

(AR-109-2)

3-500Z

tube

(AR-167)

lOOK

ohm,

watt

ALC

control

(AR-274)

12V

wire

lead

meter

lamps

(AR-164)

7.5V

watt

anode

case

(AR-604)

DIVISION

PRIME

INSTRUMENTS,

INC.

9805

Walford

Ave.

•

Cleveland,

Ohio

44102

•

216/651-1740

SYMBOL

ENGINEERING

INTEGRITY

...

QUALITY

WORKMANSHIP

...

RELIABLE

LONG-LIFE

PERFORMANCE

TECHNICAL

SPECIFICATIONS

AL-80A

Input

circuit

type;

Pi-network

maximum

VSWR

resonance;

1.3;1

less

minimum

2;1

VSWR

bandwidth;

20%

greater

maximum

drive

power

permissible;

100

typical

drive

for

full

power

output;

Output

circuit

type;

Pi-L

network

hour

continuous

carrier;

500

watts

second

continuous

carrier;

850

watts

hour

PEP

two-tone

test;

850

watts

second

PEP

two-tone

test;

1000

watts

Power

Supply

circuit

type;

voltage

doubler

load

voltage;

3000

full

load

voltage;

2700

full

load

current;

.450

amp

regulation;

10%

transformer;

lbs.

capacitors;

computer

grade,

mfd

total

maximum

draw

rated

output;

amps

120

50/60

Tube

type;

3-500Z

continuous

dissipation;

500

warm-up

time;

seconds

estimated

life;

20,000

hours

factory

cost;

$90.00

Metering;

dual

meters;

plate

volts,

plate

current,

grid

current,

power

output

PEP

ALC;

adjustable,

0-20

negative

going,

phono

jack

Efficiency

CW;

=70%

Efficiency

SSB

(envelope

crest);

=70%

MARS/WARC;

yes,

set

nearest

amateur

band

Keying;

requires

contact

closure

sink

+12

VDC

100

mA,

phono

jack

Connectors;

S0239

Line

Connector;

NEMA

5-15P,

standard

120

three

wire

Dimensions;

IS^s”

14*5"

Weight;

lbs.

Frequency

Coverage;

all

amateur

bands

from

1.8

MHz,

including

WARC

and

most

MARS

Third

Order

IMD

Rated

Output;

-35

AL-80A

UNPACKING

INSTRUCTIONS

Carefully

lift

th«

ampUfUr

out

Rtmovo

tho

PhilUpt

screws

holdin

the

pecking

materiel.

Examine

for

the

cover

on.

Slide

the

cover

bac

visible

damage.

the

amplifier

has

and

remove

from

the

amplifUr.

been

damaged

shipment,

notify

the

transportation

company.

Remove

the

packing

material

from

plate

cap

assembly.

TUBE

INSTALLATION

Insert

the

3-500*

tube

into

the

sock¬

the

amplifier

chassis.

Install

the

plate

cap

connector

the

tube

cap

and

secure

place

with

the

screw

provided.

SORE

the

solder

lug

the

underside

the

connec¬

tor

see

illustration,

NOT

over¬

tighten

the

screw.

Replace

the

am¬

plifier

cover

and

the

screws

that

secure

it.

The

additional

screws

are

attached

these

instructions.

IMNOtTANT

Save

all

the

hardware

and

packing

materials

case

you

ever

need

return

your

AL-BOR

for

factory

service.

Any

units

returned

without

proper

packing

may

imaged

and

shipping

claims

cannot

made.

Never

ship

the

amplifier

with

the

tube

installed.

fP-l0l2A

Andere Handbücher für AL-80A

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