Yaesu FT-480R User manual

INSTRUCTION
/
MANUAL
FT-4S0R
For Service Manuals Contact
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 4QY
Tel:- 01844-351694 Fax:- 01844-352554
Email:- [email protected]
YAESU MUSEN CO., LTD.
TOKYO JAPAN

TABLE OF CONTENTS
(Page)
GENERAL
DESCRIPTION”
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FRONT
PANEL
CONTROLS
AND
SWITCHES
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REAR
PANEL
CONNECTIONS
AND
SWITCHES
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FT—480R
MICROPROCESSOR CONTROLLED
2 METER ALL—MODE TRANSCEIVER
GENERAL DESCRIPTION
The
FT-480R
is
a
revolutionary.
high
performance
USB.
LSB.
FM,
and
CW
transceiver
for
the
most
demanding
2-meter
operator.
Controlled
by
a
NMOS
4-bit
microprocessor,
the
FT-480R
features
full
PLL
synthesis
in
10
Hz.
100
Hz,
|
kHz.
20
kHz
(US
model),
and
100
kHz
steps.
The
extremely
compact
size
of
the
FT-480R
makes
this
model
particularly
well
suited
for mobile use.
The microprocessor chip allows never-before-possible operating flexibility. As many as
four memory channels may be programmed to your favorite frequencies, and by switching
to the MEMORY SCAN position, all four memory channels will be scanned.
Digital display of the operating frequency is provided. The front panel meter consists of a
string of bright LED’s, for easy monitoring of the received signal strength and transmitter
output.
The standard microphone features a PIT switch and up/down scanning controls plus a
tone call button for repeater operation.
Among the convenience features of your FT-480R are receiver offset tuning for CW and
SSB, and a digitally synthesized dual VFO system.
We recommend that you read this manual in its entirety, so as to derive maximum benefit
from your new FT-480R, an exciting breakthrough from the communications experts
... Yaesu,
For Service Manuals Contact
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 4QY
Tek:- 01844-351694 Fax:- 01844-352554
Email: [email protected]

SPECIFICATIONS
GENERAL
Frequency coverage:
*143.500—148.500 MHz
Modes of operation:
SSB (USB, LSB), CW, and FM
Synthesizer steps:
SSB, CW
*FM
10 Hz, 100 Hz, | kHz
1 kHz, 20 kHz, 100 kHz
Power requirements:
13.8 volts DC, negative ground
Current consumption:
DC 0.5 amps receive
DC 3.0 amps transmit
Antenna impedance:
50 ohms
Case size:
60 (H) x 180 (W) x 240 (D) mm
Weight:
Approx. 2.9kg
TRANSMITTER
Power input:
SSB 30 watts PEP
FM/CW 30 watts DC
Carrier suppression:
Better than 40 dB
Unwanted sideband suppression:
Better than 40 dB
Spurious emission (SSB):
At least 60 dB down
Frequency response:
300—2700 Hz (—6 dB)
FM Deviation:
+5 kHz
Microphone impedance:
600 ohms
RECEIVER
Sensitivity:
SSB, CW 0.5 nV for 20 dB S/N
FM 0.35 uV-for 20 dB QS
Selectivity:
SSB, CW 2.4 kHz at 6 dB down
4.1 kHz at 60 dB down
FM 14 kHz at 6 dB down
25 kHz at 60 dB down
Image response:
Better than —60 dB
Audio output impedance:
8 ohms nominal
Audio output:
2.0 watts @ 10% THD
*
USA
Model
(Model
A)
|
Frequency Synthesizer Steps (Hz)
Model Range SSB, CW FM
(MHz)
ious erecta S
143.5—
A 148.5 10 | 100 \K
144.0—
B 146.0 10 100 1K IK
143.5-
c 148.5 Uae i a
| 1K 1K 12.5K 1750
| {IK {kK 12.5K
eee
FT-480R Model Chart
—-9Q-

ICs:
MC1496G
MCI4011B
MC14560B
MC14028B
MC14069B
MC14002B
uAT8LOS
puPC7808H
uPC577H
uPC1037H
uPC2002V
uPC7805H
uPD4094B
uPD1511-11
TC9122P
TC5081P
TCS5082P
SN16913P
SN76514N
HD10551
MB87i8A
TA7612AP
FETs:
2SKI9TMY
I DARwWH
SEMICONDUCTORS
2SKI9TMGR 3
2SK30AY
2SK51
3SKS59Y ]
3SK70
3SK73Y 8
Transistors:
2SATISC
2SA733P/Q
2SC535A
2SC535B
2SC732TMBL
2SC945P
2SC945Q
2SC945K
2SC1383R
2SC1583
28C1674L
2SC1815Y
2SC181SGR
2S8C1945
28C2002L
2802053
2SC2166
2SC2785E
ww i)
see Wn OH
— eet re OD ON tO
—
MPSAI3
Diodes:
1S188FM
1$1007
181555
182209
U05B
1SS53
10D]
MV104
HZ11B-1
LEDs:
TLG-205
TLR-205
TLR-226
TLY-226
TLG-226
FCD:
LD8231/F1P9C5
tJ
Ne} —
rhe | Pe BR oO
_—
Mm ty WY to to
Specifications
subject
to
change
without
notice
or
obligation.
For Service Manuals Contact
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 4QY
Tel:- 01844-351894 Fax:- 01844-35254
Email:- [email protected]
ACCESSORIES
Microphone
Power Cord
Spare Fuses (5A)
Stand
Miniature Phone Plug
Mobile
Mounting
Bracket(RO062900)
1
ea.
TONE IN Connector
(M3090028) 1 ea.
(T9002805) | ea.
(Q0000005) 2 ea.
(ROO62300A) 1 ea.
(P0090034) 2ea.,
(P0090174) Lea.

FRONT PANEL CONTROLS AND SWITCHES
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mao cian 1
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; Yansu_7-a50n
The FT-480R has been designed for ease of opera-
tion. However, the operator may not be familiar
with some controls since the FT-480R utilizes
modern computer technology. Be sure you thor-
oughly understand the function of each control
and indicator before operating this equipment.
(1) SQL
The squelch control quiets the receiver in the
absence of a signal on FM. It should be set to the
point where the background noise just disappears,
in order to provide maximum sensitivity.
(2) VOL
This control is the main ON/OFF switch for the
transceiver, and it also sets the audio output level
to the speaker. Clockwise rotation increases the
audio output level.
(3) STEP
The 3 positions of this switch control the tuning
rate of the Main dial, as shown in Table 1.
MAIN DIAL FREQUENCY
STEP SWITCH COVERAGE PER STEP
POSITION —_—-.-
SSBICW | OFM
= Se
S 1OHz =} 1 kHz
M 100 Hz #90 kHz
F | kHz. *100 kHz
Table 1
* USA Model (Model A)
y)
ee a
6)
® @
(4) MEMORY
This switch selects the MS mode (Memory Scan)
or one of the four frequencies that the operator
has programmed into memory. Memory scan
control is exercised via the UP/DOWN switches on
the microphone.
(5) MAIN TUNING KNOB
The tuning knob is used to control the receive and
transmit frequencies over the entire 2 meter
amateur band. It is activated when the DIL button
is pushed.
When the transceiver is initially turned on, the
display will indicate [47.000.0 MHz, and the dial
may be turned from that point to the desired
operating frequency.
(6) MODE
This switch selects the mode of operation: USB
(upper sideband), LSB (lower sideband), CW (code
operation), and FM (frequency modulation).
This switch also selects the FM _ transmitting
frequency.
:The transmitting frequency is 600 KHz
lower than the receive frequency.
SIMP : Simplex operation.
+ : The transmitting frequency is 600 KHz
higher than the receive frequency.
(7) MIC
The
MIC
jack
is
used
for
microphone
input,
PTT
control,
and
scanner
control
lines.

(8) S/PO
A string of LEDs provides indication of signal
strength and relative power output.
(9) ON AIR
This indicator lights up during transmission.
(10) BUSY/MOD
This indicator has a dual function: it will light up
when the channel is occupied, or indicate modula-
tion during FM transmissions.
(11) CLAR Indicator
This lamp lights when the clarifier switch is
pushed.
(12) LOW
This lamp lights when the HI/LOW switch is in the
LOW position.
(13) Digital Display
The digital display indicates the operating fre-
quency. In the priority mode, the character “‘P”
will be illuminated at the far right-hand side of the
window. Also, the memory channel in use will be
indicated for easy frequency reference.
(14) T.CALL
When this switch is pushed, the PTT line will close,
and a 1750 Hz or 1800 Hz tone will be transmitted
for accessing repeaters.
(15) CLAR
The clarifier switch allows +10 kHz offset of the
receive frequency from the dial or memory fre-
quency. Clarifier tuning is accomplished via the
main tuning dial. When the CLAR switch is
pushed, the scanning step selector should be set to
10 Hz or 100 Hz; if not, control will be returned
to the main dial, with the clarifier being disabled.
(16) M (Memory)
This switch is used for programming a frequency
into memory.
(17) VFO A/B TXA
This switch, when pressed, allows split operation
using the two internal VFOs.
(18) PRI
While operating in the dial tuning mode, the
PRIORITY switch allows scanning of the main
dial and one of the memorized frequencies every 5
seconds. The SCAN switch controls the stopping
of the scanner on a busy or clear channel.
(19) F.SET
This
switch,
when
pressed,
clears
all
digits
of
the
operating
frequency
below
the
step
frequency
you
are
using.
(20) HI/LOW
This switch, when pressed, reduces the transmitter
power from 10 watts to 1 watt RF output.
(21) MR (Memory Recail)
This button transfers frequency control from the
main dial to the memory channels.
(22) NB (Noise Blanker)
This switch, when pressed, activates the noise
blanker for minimizing pulse-type noise.
(23) DIL (Dial)
This switch, when pressed, transfers frequency
control from the memory channels to the main
tuning dial.
YM-40 MICROPHONE CONNECTIONS

REAR
PANEL
CONNECTIONS
AND
SWITCH
For Service Manuals Contact
MAURITRON TECHNICAL SERVICES
(1)
ANT
Cherry
Tree
Rd,
Chinnor
=:
(6)
POWER
bce
z
Oxon
OX9
4QY
.
This
is
the
main
antenna
connectetro1844-351694
Fax:-
01844-252554
This
receptacle
accommodates
the
power
cord.
A
Email:
enquines@maurironcouk
fice
rated
at
5
amps
is
located
in
the
power
cord.
(2)
TONE
IN
CONNECTOR
This
connector
is
provided
for
the
optional
exter-
|
nal
FTS-64E
Tone
Encoder,
which
synthesizes.
[
WARNING
32
CTCSS
or
tone
burst
frequencies.
WHEN
REPLACING
FUSES,
BE
CERTAIN
TO
USE
A
FUSE
OF
5
AMP
RATING.
(3)
KEY
OUR
WARRANTY
DOES
NOT
COVER
This
is
the
key
jack
for
CW
operation.
The
key-up
th
Sa
a
Be
PS
Or
ae
voltage
is
3.5
V,
while
the
key-down
current
is
L
;
|
approximately | mA.
(4)
EXT
SP
ofr
Ig
This
is
a
miniature
phone
jack
for
connection
to
an
external
speaker.
Insertion
of
a
plug
into
this
jack
automatically
cuts
off
the
internal
speaker.
(5) BACKUP
When
this
switch
is
placed
in
the
ON
position,
and
DC
power
is
still
connected
to
the
POWER
con-
nector,
the
memory
circuit
will
still
be
held
in
EXTERNAL
SPEAKER
CONNECTIONS
operating
condition.
If
DC
power
is
removed,
though,
the
memorized
frequency
will
be
lost.
TX TONE INPUT (approx.0.35 V)
+13V BURST INPUT (approx. 0.2 V)
TONE
IN
CONNECTOR
KEY
CONNECTIONS

UNDERSIDE CABINET SWITCHES
(1) SAT (Satellite)
This switch allows the operating frequency to be
changed while transmitting. This feature is useful
especially for satellite operation, for it allows the
operator to zero on the proper frequency within
the satellite passband. Neither VFO A/B TXA nor
the CLARIFIER function works when the SAT
switch is placed in the ON position.
(2) SCAN
This switch will select scanning stop on a busy or
clear channel in the FM mode. Manual scanning
“ “ies : stop is also provided on all modes.
HAI - o (3) BURST
ai
o
The BURST switch applies a short “‘tone burst” to
oa
ae
the
carrier
at
the
start
of
each
transmission
in
the
Oo:
:
“ON”
position.
This
is
normally
used
only
for
“tone
access”’
repeater
actuation.
CAUTION
THE WIRE STAND SHOULD BE INSERTED
IN THE MOUNTING HOLES ON’ THE
BOTTOM COVER IN ORDER TO PREVENT
DAMAGE TO THE SWITCHES ON THE
COVER.
|
BLACK
SS =,
FUSE HOLDER
POWER CORD CONNECTIONS

INSTALLATION
ANTENNA CONSIDERATIONS
The FT-480R is designed for operation using an
antenna presenting a 50 ohm resistive load. The
automatic final transistor protection circuitry will
reduce the power output to protect the transistors
when a high antenna SWR is encountered. The
SWR on the antenna should, if possible, be kept
below 1.5 : 1 at all times to secure full output
from the transceiver.
In most cases, coverage is a function of antenna
height. The antenna for base station operation
should be located as high and in the clear as
possible. Vertical polarization is standard for FM
communications in most areas, so be sure that your
antenna is oriented appropriately. Popular anten-
nas for base station use include the 5/8 wavelength
vertical or one of the many stacked dipole arrays.
For accessing repeaters a long distance away, a
Yagi or other high gain directional array may be
required.
For mobile applications, the most popular anten-
nas are the 1/4 wavelength vertical and the 5/8
wavelength vertical, which shows approximately
3 dB gain over the 1/4 wavelength vertical.
Do not economize on coaxial cable, as much
power can be wasted in lossy transmission line.
For mobile use, the RG-58A/U type of coax may
be used. To minimize loss, use the shortest length
that is possible. For base stations, use type RG&A/
U coaxial cable. For very long runs, type
RGI7A/U, aluminum-jacketed ‘‘foamflex” coax,
or air dielectric “‘heliax”’ cable may be used.
The optional antenna duplexer AD-1! allows the
MOBILE INSTALLATION
For mobile service, the FT-480R should be in-
stalled where the digital display, controls, and
microphone are easily accessible for operation.
The transceiver may be installed in any position
without loss of performance. A suitable location
would be atop the transmission tunnel. A universal
bracket is supplied with your transceiver for
mobile installation. Refer to Fig. | for mounting
details.
1. Use the universal mounting bracket as a
template for positioning the mounting holes.
Use a 3/16” diameter bit for drilling these
holes, allowing clearance for the transceiver,
its cables and microphone, and its controls.
Secure the mounting bracket with the screws,
washers, and nuts supplied, as shown in the
drawing.
Ease the transceiver into the guide rail, and
slide it into the desired position. Tighten the
knobs on the outside of the universal bracket
to secure the transceiver.
The microphone hanger may be installed
wherever convenient for access to the micro-
phone.
Power connections should be made directly to the
automobile battery. Routing through the cigarette
lighter may cause the lighter fuse to blow if the
fuse is not of sufficient rating. As well, connection
directly to the battery allows the memory circuits
to remain activated when the ignition is turned off,
using the BACKUP switch.
operation on both 50 and 144 MHz using a single For Service Manuals Contact
antenna (RSL-50 or RSL145).
See your Yaesu dealer.
50/I44MHZ ANTENNA
ANT OUPLEXER
YAESU AD-I
MAURITRON TECHNICAL SERVICES
8 Cherry Tree Rd, Chinnor
Oxon OX9 4QY
Tek:- 01844-351694 Fax:- 01844-352554
Email:- [email protected]
AD-1 ANTENNA
DUPLEXER