Lafayette HA-310A User manual

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\
®
AL
Kl
LAFA
YCTTC
RADIO
CLCCTROIIICS
CORP.
l l l JERICHO
TLIRNPll<E
SYOSSET,
l.
I , NEW
YORK
LAFAYETTE
RADIO
ELECTRONICS
Printed
in
Japan
LM-lOA
'
..
,
Model HA-310A
CITIZENS
BAND
~-
"
WALKIE
TALKIE"
3 CHANNELS
WITH
RANGE BOOST
STOCK
NO.
99-31593L
OPERATING MANUAL

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GENERAL
The
LAFAYETTE
HA
-3
10A
is
a 13
transistor
compact
hand-held
3
channel
transceiver
designed
to
operate
with
an
input
of 1.5
watt
to
the
final RF
power
stage. It
is
intended
for use in
th
ese D Citizens
Radio Service
under
conditions prescribed in
Part
95 of
th
e
FCC
Rules
and
Regulations.
This
requires a
simple
li
cens
ing
procedure
and
permits
operation
on
Channels
1
through
23.
Housed in a rugged
metal
case,
theHA-310A
comprises a fully m1ma•
turized
transmitter
and
receiver--both
crystal
controlled
for precise,
deper.qable
operation.
The
sensitive
superheterodyne
receiver section
consists
of
1
stage
of
radio frequency
amplification,
crystal co
ntrolled
local oscillator. 2
stages
of
intermediate
frequency
amplification
, auto•
matic
gain
control
for
preventing
overload of
strong
signals
as well
as
maintaining
signals
at
approxim;itely
the
same
level, plus
an
auto•
matic
noise
limiter
for suppression of
ignition
and
similar
type
elect-
·ical disturbances. A 1
stage
adjustable
squelch circuit
is
included
t<
quiet
the
receiver
during
standby
periods in
the
absence of a signal.
A 3
stage
push-pull
amplifier
provides
an
undistorted
high
output
through
the
built-in
speaker
/
microphone
. In
transmit
mode
the
push-
pull
amplifier
in
conjunction
with
RANGE
BOOST
is
used as a high
level m·
odulator
for
the
3
stage
crystal
controlled
transmitter.
The
RANGE
BOOST
amplifies
the
weak
voice
components
generated
by
the
speaker
/
microphone
to
produce a
higher
perct·
ntage
of
modulation
and
to
limit
the
higher
level
components
to
100%
modulation,
result-
ing
in increased
power
in
the
sidebands
with
extended
transmitting
range.
Unless
otherwise
ordered,
the
HA-310A
is
normally
supplied
with
cry-
stals
for
operation
on
channel
10.
Additional
mat
ched
pairs
of
crystals
(transmit
and
receive)
are
available
for
operation
on
any
of
the
other
. channels.
Although
built
to
withstand
a
certain
amount
of
abuse,
the
HA-310A
should
be
treated
with
the
care
normally
accorded
to
electronic
equipment.
Always
protect
the
unit
against
dirt
;ind
water.
If
the
unit
is
treated
with
reasonable
care.
the
only
maintenance
likely
to
be
nPeded
to
maintain
peak
performance
is
the
replacement
of
the
battery
when
necessary.
Ill'
l
TECHNICAL SPECIFICATIONS
SPECIFICATIONS
Frequency
range············
26. 965
to
27. 255
meg
acycles
(channels
1-2:1)
Number
of
c
hann
els·
····
·3
Operating
frequency
······Supplied
with
one
set
of
plug-in
c
rystals
for
channel
10(27.075
MHz
)
in
position A.
May
be
operated
on
any
other
ch
an
nels
by
insert-
ing
crysta
ls in
position
B and C sockets.
·Transmitter
····
····•
·
······
·Cr
ystal
controlled:
1.5
watt
input
to
the
final
RF
amplifier.
Meets
F.
C. C.
reg
.
Part
95.
Modulation
.....
....
......
...
High
level
push-pull
modulators,
100% capa-
bility
.
Receiver···········
··
·······
..
··C
rystal co
ntroll
ed
with
RF
stage,
455
KHz
I.F.
Sensitivity
··· ··•·····....··· ···
100
mw
. or
mor
e
at
1 uv
input
1 uv
for
10
db
S+N
/ N or
better
Sele
ct
ivity
····
······
····
·· ·
····
6 KC less
than
6 db, m
ore
than
25
db±l5KC
Audio
output
.. ···
·············More
th
an
500
mw.
Power
supply
····
···
......
· 12volts,
8
UM
-
3
type
battery
Antenna
···
···············
··· ·· ·50"
fully
extended
9
section
telescoping
Transistors·····••··••••••••
•
•••
13
Diodes·······
··
················
·
·5
Va
ristor····
·····
.....
..
.......
1 (
temperature
co
mpensating
)
ACCESSORIES
In
cluded
with
HA-310A
1
hand
strap
8 99.6258
battery
cells
1
transmit
c
rystal
ch
anne
l 10
1 receive
II
1
instruction
m
anua
l
Optional
Low
impedance
dynami
c
earphone
R
eceive
and
transmit
c
ry
sta
ls for c
hannels
1-23
External
power
supply
(117
volts
AC
input
12
volts
DC
output)
2

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LICENSING REQUIREMENTS
You
are
not allowed to
transmit
unless you
are
licensed by
the
FCC
either
as
an
individual licensee
or
operating
as
an
additional
station
under
the
license of a
station
that
has been
granted
' permission by
the
FCC
for additional stations. Please refer
to
FCC
Rules
and
Regulations
*Part
95
section 95. 87 also
Form
505
Item
8.
When
you receive
your
license, fill
out
TRANSMITTER
IDENTIFICATION
CARD.
F;ORM
452-C,
and
affix
same
to
the
rear
rover.
*Avail
ab
le by
sending
$
1.
25
to
the
Superintendent
of Documents,
Government
Printing
Office,
Washington
25
D.
C.
.
and
requesting
Vo
l
ume
Vl of FCC Rules
and
Regulations (
which
include,-
Part
95) .
BATTERY
INSTALLATION
Using
a coin as a screw rlriver,
turn
the
large
rear
cover
ho
l
ding
screw
in a
counter-clockwise
direction
and
remove
the
cover. •
Pry
off
the
snap
connector
attached
to
the
battery
holder
and
remove
the
empty
holder. I
nsert
the
8
1.
5 volt
penlight
battery
cells as indicated gra-
phically in each
compartment
of
the
hairier.
Note
that
the
negat
ive
end (case)
of
each cell
makes
-
contact
with
a
spring
.
When
inser
ting
a cell,
always
insert
this
end
first
into
the
compartment,
then
the
other.
When
all cells
have
been insertecl in
the
ho
lder,
'ltt'lch
the
snap
connector
and
install
holder
into
place. Replace
rear
cover
and
fasten
screw
BATTERY
METER
To
check
the
batteries. simply switch
the
unit
on
(recei,·e mode) .
The
meter
pointer
will indicate in
the
green
area
fo_r
good batteries.
white
area
for doubtful
or
weak
batteries
and
if
the
pointer
indicates in
the
red
area,
the
batteries
shou
ld be replaced.
IMPO
R
TA
T:
Do
not
leave
weak
or
exhausted
batte
ries
in
the
holder, especially if
unit
is
not used
or
stored
for a l
ong
period of
ti
me
as
chemical
action
of
weak
or
exhausted
batter
ies
may
cause
possible
damage
to
battery
holder
or
compartment.
3
OPERATING INS
TRUCT
IONS
Do
not
attempt
to
transmit
until
you recei,·e
vour
license from
the
FCC.
EARPHONE JACK
BATTERY
METER
SQUELCH CONTROL
AND
ON
OFF SWITCH
VOLUME CONTROL
AND
POWER
ON
/OFF SWITCH
PUSH
-
TO-TALK
BUTTON
Fi
g.
I
EXTERNAL
ANTENNA
JACK
TELESCOPING
ANTENNA
SPEAKER !\1ICROPHONE
CHA:--J
:--JEL
SELECTOR
EXTE~AL
POWER JACK
CHARGER
JACI<
1.
Extend
the
telescoping
whip
antenna
to
its full
length.
Avoid
bending
.11e
slim,
top
section
of
the
antenna
when
extending
or
col
lapsing
it.
To
extend
the
antenna,
grasp
the
button-shaped
tip
and
extend
the
antenna
partially.
Next.
grasp
the
center
sections
and
extend
the
l
owe
r sections fully.
Extend
the
top sections by
pulling
gently
on
tip.
To
collapse
the
antenna,
grasp
the
center
sections
and
collapse
the
lm,xer sections first.
then
the
remainder,
with
slim
top
section
pushed in
by
pressing
on
the
tip
with
the
index finger.
2.
Turn
VOLUME
control
in a
downward
direction
. to
switch
unit
on.
Set
the
SQUELCH
control
to
the
fu
ll
y
"open"
position initially
(upward),
and
increase
volume
until
background
noise is heard.
Set
channe
l
selector
to
desi,ed
channel
(remember,
the
unit
is
originally
4

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supplied
with
cr\'stab
for
operation
on
ch,
mn
el
l0onl
y,
u,uallv
in the
A section). ·
3.
The
HA-310A
i,
equipped
with
;1
l·ombined
speaker
/microphone
which
is
lol·;ited behind the
gr
ille
011
the
unit.
To
transmit.
hold
the
unit so
th;1t
t)1e
grille
is
:~
to
5 inches ;iw;iy from vour lips
and
fulh· depress
the
push-to-talk
button.
Sp
e;
1k
dearl\'
and
at
a
n()rmal l
e,
·el.
Wh
en
you
han
'.
comp
leted
your
message, release
the
bu11<J11.
:,-.;oTE:
When
one unit
is
transmitting.
it
i:s
not possible for thi~
unit
to
hear
an\
·
mes,ages
directed
to
it. Do not,
therefore,
attempt
to talk until
the
other
station
has finished
transmittin
g.
4.
ThE'
squelch circuit in
the
recei,·
er
section of
the
transcei,·er
1s
used to e
liminate
;11111<>,·ing
background
noise
when
110
signals
are
present.
To
adjust
the
SQUELCH
control
properly
during
reception,
turn
up
VOLUME
until bac
kground
noisj:'
is heard(no signals
should
he
present).
Rotate
the
SQUELCH
sl
ow
ly
downward
until
the
back-
ground
noise just disappears,
then
roli1te
slightly
further.
At
this
point,
th
e recei,·E'r will
he
quiet between
transmitters,
but a trans-
mitted
signal will
overcome
the
squelch action
and
be heard. Do
not a(h-i!nce
the
control
too far
or
some of
the
weaker
signals will
not be heard.
If
you wish to receive
extreme
ly
weak
signa
ls
or
disable
th
e squelch circuit, simplv
turn
the
cont rol to
the
fully
upward
position.
CHANNEL SELECTOR
This
switch
enable
s you to select
one
of
three
frequencies of opera-
tion. In
one
position, position A is
selected;
in
the
other
positions.
either
B
or
C
is
selected.
The
actual
channels
on
which
th
e
unit
is
able
to
operate
are
determined
by
the
frequen
cies
of
the
c
ryst
als
inserted
in
the
unit.
As
mentioned
previously,
most
units
are
equipped
with
crysta
ls for operati
on
on
channe
l 10
inserted
in
the
"A"
position.
If
you
decide to
insert
additiona
l
crystals
for
the
other
channels,
a
record
should
be
kept
of
the
channe
l
and
its
correspon
ding
position
in
the
trans
ceiver to avoid confusion
when
using
the
channel
selector
switch.
5
OPERATING RANGE
The
HA-310A
has
been
factory-adjusted
to
provide
optimum
perfor-
m::!nce. Its
operating
range
will
vary
with
surrounding
conditions
and
will
genedly
fall
into
one
of
the
following
categories:
ADVERSE
CONDITIONS
(In
or
around
buildings,
with
poor line-
of-sight
)
--
Under
such
conditions
range
may
be
restricted
to several
hundred
yards.
NORMAL
CONDITIONS
(
Line-of-sight
conditions,
with
few
inter-
vening
obstacles) - -
Range
may
extend
up
to
1
mile
or
more.
FAVORABLE
CONDITIONS
(
Ove
r
flat
terrain
with
no
obstructions
and
no
interference
or
noise)
--
Range
may
extend
up
to
severa
l miles.
FREQUENCY OF OPERATION
The
HA-310A
transceiver
may
be
operated
on
channels
I
to
23
in
the
27
MHz
Citizens Band.
Both
re
c
eiver
and
transmitter
are
ciystal-
controlled
,
and
are
normally
equipped
with
channel
10
crystals
unless
otherwise
ordered
.
Additional
matched
pairs
of
crystals
(
transmit
and
receive)
may
be
ordered
for oper
ation
on
other
channe
l
s.
Note
that
the
c
rystal
in
the
receiving secti
on
of
the
HA-310A
is used
for
the
osc
illator
and
is
therefor
e
455KHz
l0wer
th
an
the
actual
fre-
quency
of
operation.
However,
when
ordering.
you need
only
specify
the
stock
number
and
channel
for
which
crystals
arl! required.
ADDING
NEW
CHANNEL
CRYSTALS
To
insert
additional
crystals
in
the
transceiver,
simply
remove
the
back cover (
one
large
screw
)
and
in
sert
the
new
crystals
in
the
places
shown
in
Figure
2.
IMPORTANT:
Be
sure
to
insert
the
receiving
(R)
and
transmitting
(T)
crystals
in
their
proper
loc
ation.
If
their
positions
are
reversed,
the
HA-310A
will
transmit
on
one
frequency
and
receive
on
another,
both
of
which
will be
outside
the
Citizens
Band.
6

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R R[CEIVING CRY S TAL
T. IRANSMllllNG CRYSTAL
R: R [CEIVING CRYST AL
T: TRANSMITTING CRYSTAL
Fig . 2
CRY ST AL CHART
CHANNEL
! FREQ CMC.)1 FREQ . (MC.) C
HANNEL
FREQ. (MC.) FREQ. (MC.)
TRANSMIT RECEIVE
TRANSMIT
RECEIVE
U. S. 1 CANADA CRYS
TAL CRYSTAL
U. S. CANADA
CRYSTA L CRYSTAL
I I I 26.965
26 . 510 13 JO
27 . I15 26.660
2 26.975 2
6.5 20
14 11 27. 1 25
26.670
3 I
26 . 9 85
26.530 15 I 12 27 . 1 35
26.680
4 1 I
27. 005 26 .5 50
I
16
13 27. 1 55
26. 700
5 2 27 .0 15
26 .5 60 17
I
14
27. 1 65
26. 710
6 I 3 I 27.025
26 . 570 18 15
27. 1 75
26. 720
I
7 I 4 I 27.035 I 26.580
11
19 16 27. 1 85
26. 730
I
8 5
27 . 055 26 . 600 20
17 27.205
26. 750
9 6
27 . 065 26.610 21 18
27.215 26. 760
I
JO
7 27.075 26.620
22 19
27.225 26. 770
-~
11 8 27 . 085
26 . 630
23*
27.255 26.800
~
12
9
27. 1 05
· 26 . 650
Although receive crystals are 0. 455 MH z l ower than transmit crystal s,
the receiver and transmitter both tune to the channel frequency s hown
in column "FREQ. ( MHz ) TRANSMIT CRYSTAL "
"'Channel
23 is shared with ot her Radio Services, including Class C
radio control.
7
I
BATTERY REPLACEMENT
When batte ry replacement becomf's n i> ,f'<ssary, any of the batteries
listed may be used.
MFR'S NO . I STANDARD I ALKALINE I
MERCURY
I
DRY CELL CELL CELL
LAFAYETTE
99 - 6258
33 - 150 5 I
33 - 1450
JIS
UM 3, U M3 A .. . . . . . . . ..
.......
EVEREADY
915
E- 91
I E-
9, E502
BURGESS
z AL9
HG9
RCA vs 034 vs 1 334
I vs
313
RAY-O-VAC 7 R or 7 LP
I I
SM
MALLORY
I M- 1
5F MN - 1 500
ZM - 9, DM-9 N
MERCURY CELLS, which offer the long est life, have opposite pola-
rity to standard or a lkaline cells and MUST BE INSERTED IN THE
BATTERY HOLDER IN THE OPPOSITE DIRECTION TO THAT
OUTLINED IN THE HOLDER.
EARPHONE OPERATION
If you wish to use th e earph one for private listening , si mply plug it
into the small jack at the top of the unit . This will a utomati cally
cut off sound from the speaker.
OPERATION ON 117 VOLTS 50/60 CYCLE AC
The HA-310A ma y be operated from 117 volts 50/60 cycle AC when
used with an AC adaptor ( availab le as an opt ional accessory at ext ra
cost). Altho
ugh this restricts mobility to a certain extent, it does
provide
battery conservation in those cases where one unit is used
as a base station. The HA- 310A is equipped with a special jack at
the side into which the AC adapto r plug is inserted for AC operati•Jn.
SERVICE AND MAINTENANCE
If trouble is experienced with the unit , we reco mmend that you
check the following:
1. Check battery for weak or discharged condition. Replace if
necessary.
8

www.SteamPoweredRadio.Com
2.
Make
sure
the
channe
l selector is
set
to
the
position in which
crysta
ls have been
inserted
(
The
unit is
normally
supplied
with
crystals
in position A
only).
3.
If
trouble
is experienced
with
transm1ss1on,
make
sure
you
are
depressing
the
push-to-talk
button
fully. Also,
the
antenna
must
be fully
extended
for proper operation.
4.
Make
sure
cr
ys
tals are firmly seated. Check
the
frequencies
or
channel
markings.
Make
sure crystals (T
&
R)
are
inserted
tn
their
proper positions
and
not reversed.
5.
If
checks above
fail
to
disclose the trouble, do
not
attempt
repairs
or
adjustments
yourself.
The
unit
should be serviced
only
by a
qualified radio technician.
Whenever
possible, we
recommend
that
you
return
a defective
unit
to
the
store
from which
it
was
purchased.
RETURNING
THE
UNIT
FOR
SERVICE
In the
event
that
repair
is
necessary
[either in
or
out of
warrant
:·
],
we
recommend
that
you
return
the unit to the
store
from which it
was purchased.
In
most
cases,
this will be your
fastest
and most ef-
ficient method of obtaining
service
.
If
you wish to ship the unit to our main
service
center,
please read
the instructions whic.h follow.
SHIPPING INSTRUCTIONS
Pack
the unit
very
carefully
to avoid damage in transit,
preferably
in
its original carton.
If
the
original
carton
is not available, use a
sturdy
carton
with
at
least
3 inches of shredded
paper
or
excelsior
around
the unit. In the
latter
case,
wrap
the unit
in
paper
first
to avoid
particles
of packing
material
getting
into it. Include with the unit a
letter
explaining
exactl
y what difficulties you have
encountered
[re-
member
to add
extra
First
Class postage and indicate on the outside
of the
carton
that
First
Class Mail
is
enclosed]. Ship by
prepaid
ex-
press
if possible and
mark
ELECTRONIC
EQUIPMENT-
FRAGILE
.
Clearly addr
ess
the
carton
as
follows:
SERVICE DIVISION
LAFAYETTE RADIO ELECTRONICS
CORP
.
150
Engineers
Road
Hauppauge,
L.
I.,
N.
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