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81
INSTALLING OPTIONS
You will require a #1 Philips screwdriver to install the
VGS-1. To install the YF-107 IF filter(s) and/ or SO-3
TCXO, you will also need a soldering iron (approx.
30 watts).
REMOVING THE TOP COVER
When installing the optional VGS-1, YF-107 IF filters
or SO-3 TCXO, remove the top cover of the
transceiver:
1 Remove the 8 screws.
PADDLE KEY
EX
T.SP
DATA
REMO
TE
CO
M
MIC
PANE L
OPTION FILTER2
OPTION FILTER1
2 Lift off the top cover.
VGS-1 VOICE GUIDE & STORAGE UNIT
SWITCH OFF THE POWER AND UNPLUG THE DC POWER
CABLE BEFORE BEGINNING INSTALLATION.
1 Remove the top case (8 screws) {above}.
2 Loosen the 4 screws to remove the shield cover.
PA
DDLE
KEY
EXT.SP
DATA
REMOTE
COM
M
IC
P
A
N
EL
T
C
X
O
O
P
T
I
O
N
OPTION FILTER2
OPTION FILTER1
3 There are 5 rubber cushions in the VGS-1
package. Use the 2 rubber cushions shown below
and attach them to the VGS-1. The remaining
cushions are not used.
4 Plug the VGS-1 into the VGS-1 connector of the
PC board, pressing down on the top of the VGS-1
until secure.
PADDLE
KEY
E
X
T.S
PDA
TA RE
M
OTE
C
OM
M
IC
PA
NEL
T
C
XO
O
PT
IO
N
OPTION FILTE
R2
OPTION FILTER1
5 Replace the shield cover and tighten the 4 screws.
6 Replace the top case (8 screws).
Note:
After the installation, you can adjust the VGS-1 playback
volume by selecting Menu Nos. 14 and 15.
YF-107C/ CN/ SN IF FILTERS AND SO-3 TCXO
SWITCH OFF THE POWER AND UNPLUG THE DC POWER
CABLE BEFORE BEGINNING INSTALLATION.
Three different types of IF filters (YF-107C,
YF-107CN, and YF-107SN) are available for the
TS-480 transceiver. You can install a maximum of 2
IF filters in the transceiver. Refer to page 90 for the
bandwidth information on each filter. As for the SO-3
option improves the transceiver frequency stability to
±0.5 ppm.
1 Remove the top case (8 screws).
2 Locate the filter and TCXO PCB and loosen the
3 screws.
PADDLE
KEY
EXT.SP
DATA
REMOTE
COM
M
IC
P
A
N
E
L
OPTION FILTER2
OPTION FILTER1
T
C
X
O
O
P
T
IO
N
3 Unlatch the connectors by pressing the connector
tabs upwards.
PAD
DLE
KEY
EXT.SP
DATA
REMOTE
COM
M
IC
P
A
N
E
L
OPTION FILTER2
OPTION FILTER1
OPTION FILTER2
O
PTION FILTER1
TC
XO
O
PT
IO
N
T
C
X
O
O
P
T
I
O
N
4 Insert the IF filter(s) and/ or SO-3 TCXO.
OPTION FILTER2
OPTION FILTER1
TC
XO
O
PT
IO
N
VGS-1 connector
VGS-1 connector
VGS-1
IF filter/ TCXO PCB
SO-3
Calibration hole
Secondary IF filter
Primary IF filter