Ten-Tec 4229 - Front Sub-Panel Assembly; Potentiometer, Meter Switch, and Pilot Lamp Mounting; Antenna Switch Shaft Assembly; Shaft Assembly Preparation and Rotation Limits

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(#)

Connect

the

lead

from

terminal

#12

on

Sl

to

the

upper

right

stator

screw

on

the

rear

of

the

variable

capacitor.

Use

a

#10

solder

lug

and

attach

with

a

#10

hex

nut.

Tighten

and

solder.

Insert

the

free

end

of

the

wire

from

terminal

#5

on

Sl

into

the

upper

of

the

two

eyelets

in

the

center

of

the

right

edge

of

the

rear

end

plate

of

the

var-

iable

inductor.

Solder.

S2,

Solder

the

leads

from

terminal

#6

on

Sl

and

the

lead

from

terminal

1

on(si)to

the

eyelet

in

the

upper

right

corner

of

the

variable

inductor

rear

end

plate.

(If

either

eyelet

hole

is

too

small

to

accept

both

wires

connect

the

wires

to-

gether

and

insert

one

in

the

eyelet

--

solder

both

together

and

to

the

eyelet.)

The

balun

coil

can

now

be

mounted

to

the

right

side

panel.

Pass

the

8-32

x

2-1/2"

machine

screw

through

the

small

hole

adjacent

to

the

upper

rear

square

hole

in

the

side

plate.

Slip

the

1/2"

aluminum

spacer

on

the

mounting

screw

against

the

inside

of

the

panel.’

Next

slide

one

of

the

2-1/2"

square

insu-

lator

plates

against

the

spacer

and

run

the

screw

through

the

hole

in

the

rubber

plug

inside

the

balun

coil.

Secure

this

by

adding

the

other

square

insulator,

lock

washer,

and

hex

nut.

Align

the

insulators

so

that

the

top

edges

are

horizontal

and

tighten

the

assembly

sufficiently

to

hold

in

place.

Install

two

flat

washers

and

wing

nuts

on

terminals

Tl,2,3

and

4.

Install

wing

nut

on

ground

(GND)

terminal.

FRONT

SUB-PANEL

ASSEMBLY

Attach

and

solder

the

three-wire

3-1/2"

lead

assembly

with

the

three

terminal

connector

to

the

panel

mounting

potentiometer

which

serves

as

the

"SWR

SET"

control.

When

viewing

from

the

back

side

of

the

control

with

the

three

ter-

minals

pointing

"UP",

connect

the

leasd

as

follows:

A.

White-Red

wire

to:

left

terminal

--

solder.

B.

White-Brown

wire

to

center

terminal

--

solder.

C.

White-Black

wire

to

right

terminal

--

solder.

Install

a

hex

nut

fully

on

the

threaded

bushing

to

end

of

bushing.

Install

a

lockwasher

on

the

bushing

next

to

the

nut

above.

Insert

the

bushing

through

the

sub

panel

from

the

back

side

(front

side

has

dial

calibrations)

and

posi-

tion

so

that

the

terminals

of

the

potentiometer

are

vertical

and

on

the

top

side.

Secure

with

a

hex

nut

to

the

panel.

Mount

the

2-1/4

x

1-3/16

rectangular

mounting

plate

for

the

meter

switch

as-

sembly.

Orient

this

horizontally

on

the

front

of

the

sub-panel

with

three

#4

x

5/8"

sheet

metal

screws

and

three

1/8"

spacers.

Tighten.Fasten

the

meter

switch

board

subassembly

to

this

plate

by

inserting

from

the

rear.

The

switch

levers

pass

through

the

three

holes

in

the

mounting

plate.

(Components

on

the

board

are

on

top.)

Secure

with

a

4-40

x

1/4"

machine

screw

in

the

holes

on

each

side

of

the

holes

for

the

switch

buttons.

Tighten.

Mount

three

pilot

lamp

assemblies

with

bulbs

installed.

All

mount

on

rear

side

of

the

sub-panel

using

4-40

x

3/16"

machine

screws,

lockwashers,

and

hex

nuts.

Place

single

socket

so

that

the

bulb

locates

behind

the

meter

scale

area

when

meter

is

installed.

Mount

the

remaining

two

pilot

lamp

assemblies

with

one

common

screw.

These

mount

horizontally

in

opposite

directions.

When

mounted,

bend

each

so

that

the

bulbs

pass

through

the

two

rectangular

holes

below

the

dial

calibrations.

Adjust

each

so

as

to

position

the

filaments

in

the

bulbs

thru

and

to

the

front

of

the

sub-panel.

The

light

from

these

illu-

minates

the

dial

scale.

The

front

surface

of

the

glass

envelopes

should

not

extend

through

the

openings

more

than

1/4".

ANTENNA

SWITCH

SHAFT

ASSEMBLY

Select

one

of

the

two

shaft

and

panel

mounting

assemblies

that

are

marked

with

the

number

38017

on

the

face

of

the

detent

mechanism.

Hold

the

detent

mechanism

with

the

threaded

bushing

toward

you

and

note

that

there

is

a

de-

tent

action

as

the

shaft

is

rotated

within

the

bushing.

Adjust

so

that

the

shaft

is

in

the

maximum

counterclockwise

position.

Note

that

there

is

a

1/8"

x

1/8"

tab

extending

to

the

front

of

the

assembly.

—

-—°

=”.

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