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.
5Solder 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 FILTER2
OPTION FILTER1
TCXO
OPTION
R103
R104
X1
6Replace the PCB in the transceiver and press
both the tabs downwards until secure.
7Tighten 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.
1Set 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
2Remove the top case (8 screws) from the
transceiver.
3Tune 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:
faf = (fdisplay/15.600 x ∆freference) + 800 Hz
where ∆freference is the shift from the 15.6 MHz
reference frequency.
4Close 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:
fsidetone = 800 Hz ±50 ppm (= 800 ±0.04 Hz)
where ∆freference is the shift from the 15.6 MHz
reference frequency.
5TS-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.
6Replace the top cover (8 screws).