Kenwood TS-590S Manual Do Utilizador

72

The SO-3 option improves the transceiver frequency 
stability to ±0.5 ppm. 

1 Remove the CN503 connector and TCXO PCB 

screw, as shown below.

TCXO PCB

CN503

TCXO PCB

CN503

2 Remove the TCXO PCB.

3 Insert the SO-3 TCXO.

4 Solder all pins on the reverse side of the PCB.

5 Re-insert the TCXO PCB in the transceiver.

6 Connect the CN503 and tighten the screw.

7 Move the C903 and C904 jumper as shown below.

CN903

CN904

TC501

Note:
X To avoid misplacing the jumper, keep it attached to 1 pin of 

C903 or C904.

X When removing the SO-3 TCXO, replace the jumper to its 

original position.

8 Replace the bottom case (10 screws).

Note:  The transceiver is adjusted at the factory prior to 
shipping.  Do not perform this adjustment unless it is necessary.

1 Set the following on the transceiver:

•

Mode: CW

•

AF control: Center

•

Menu No. 34 (CW RX pitch): 800 Hz

•

SHIFT control: 800 Hz

•

RIT function: OFF

•

Break-in function (VOX): OFF

2 Remove the bottom case (10 screws) from the 

transceiver.

3 Tune in a standard frequency station such as 

WWV or WWVH at, for example, 10.000.00 MHz 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.

Adjust the trimmer (TC501) to minimize the 
frequency difference between the received 800 Hz 
tone and the 800 Hz sidetone.

Adjust the trimmer inside the SO-3 using the 
supplied plastic adjustment tool.   Minimize the 
frequency difference between the received 800 Hz 
tone and the 800 Hz sidetone.