15 INSTALLING OPTIONS
82
•
SO-3: The calibration hole must be on the right
side, looking from the front panel.
•
IF filters: Insert a primary IF filter in the OPTION
FILTER1 location, and a secondary IF filter in the
OPTION FILTER2 location. The transceiver
automatically detects what optional IF filter(s) is
installed when it is turned ON.
5
Solder all pins on the reverse side of the PCB.
•
SO-3: Cut the 2 wires marked as R103 and R104,
as shown below.
PADDLE
KEY
EXT.SP
DATA
REMOTE
COM
MIC
PANEL
OPTION FIL
TER2
OPTION FIL
TER1
TCXO
OPTION
R103
R104
X1
6
Replace the PCB in the transceiver and press
both the tabs downwards until secure.
7
Tighten the 3 screws and replace the top cover.
REFERENCE FREQUENCY CALIBRATION
Note:
The transceiver is adjusted at the factory prior to shipping.
Unless necessary, DO NOT perform this adjustment.
1
Set the following on the transceiver:
•
Mode: CW
•
AF
control: Center
•
Menu No. 34 (CW RX pitch): 800 Hz
•
IF SHIFT
control: Center
•
RIT function: OFF
•
Break-in function (VOX): OFF
2
Remove the top case (8 screws) from the
transceiver.
3
Tune in a standard frequency station such as
WWV or WWVH at, for example, 10.000.00 or
15.000.00 MHz.
•
Adjust the
Tuning
control so that the display
reads the exact frequency of the station.
•
You should hear a beat tone of approximately
800 Hz.
•
For 800 Hz:
f
af
= (f
display
/15.600 x
∆
f
reference
) + 800 Hz
where
∆
f
reference
is the shift from the 15.6 MHz
reference frequency.
4
Close your CW key. You will hear a transmit
sidetone of approximately 800 Hz.
•
This sidetone produces a double beat tone
when it combines with the received signal.
•
Adjust the
AF
control to hear the double beat
clearly.
•
For 800 Hz:
f
sidetone
= 800 Hz
±
50 ppm (= 800
±
0.04 Hz)
where
∆
f
reference
is the shift from the 15.6 MHz
reference frequency.
5 TS-480 transceiver without SO-3:
Adjust the trimmer (TC1) to minimize the
frequency difference between the received 800 Hz
tone and the 800 Hz sidetone.
TS-480 transceiver with SO-3:
Adjust the trimmer inside the SO-3 using the
supplied plastic adjustment tool (W01-0406-XX).
Minimize the frequency difference between the
received 800 Hz tone and the 800 Hz sidetone.
6
Replace the top cover (8 screws).