Bedienungsanleitung Kenwood TS-890S (Seite 55 von 196) (Englisch)

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Drive Output (DRV)

The allowable output frequency ranges from the drive output

(DRV) are the 135 kHz band (135.700 kHz to 137.799 kHz), 475

kHz band (472.000 kHz to 478.999 kHz) and the amateur bands

between 1.9 and 50/70 MHz. The output impedance is 50 Ω and

output level is approximately 1 mW (0 dBm).

ALC Voltage

+12V

Control Voltage

(Transmission)

Detection

Circuit

AMP

Linear Amplifier

(Typical Input at 1 mW)

Output Power at

Approx. 1 mw (0 dBm)

Connect Using a

Coaxial Cable

GND

ALC

LKY

DRV Connector

REMOTE Connector

(View from Rear Panel)

Turning ON/OFF Drive Output

Press [DRV].

Pressing [DRV] each time toggles drive output between ON

and OFF.

•

When drive output is ON, the [DRV] LED lights up in green.

•

During output from the DRV terminal, TX signals will not be

output from the ANT 1 and ANT 2 connectors.

•

Transmission from the DRV terminal will not be displayed on

the PWR meter. ALC (automatic level control) can be

operated by inputting ALC voltage from an external device

to the ALC terminal of the REMOTE connector. The

operating status will be displayed on the meter in this case.

The DRV output level is not controlled when there is no ALC

voltage input. As such, the output level is determined

according to the MIC input or [CAR] control settings.

●

Pay careful attention to the connection when making use

of drive output as described above.

Adjusting the Drive Output Level

Turn the [POWER] control.

“nnn%” is displayed according to the selected drive output

level. [nnn: 5 to 100]

•

A different drive output level can be configured for the AM

and modes other than the AM mode.

•

The resolution [1% / 5%] for changing the drive output level

can be switched using the Menu 6-04 “Transmit Power Step

Size” setting.

Band/Mode Setting Value

Default

CW/FSK/PSK/SSB/FM/

SSB-DATA/FM-DATA

5 to 100 [%] (1 step or

multiples of 5)

100

AM/AM-DATA

5 to 25 [%] (1 step or

multiples of 5)

50M

CW/FSK/PSK/SSB/FM/

SSB-DATA/FM-DATA

5 to 100 [%] (1 step or

multiples of 5)

100

AM/AM-DATA

5 to 25 [%] (1 step or

multiples of 5)

70M

(E Type)

CW/FSK/PSK/SSB/FM/

SSB-DATA/FM-DATA

5 to 100 [%] (1 step or

multiples of 5)

100

AM/AM-DATA

5 to 25 [%] (1 step or

multiples of 5)

Built-in Antenna Tuner

It is important to ensure that the impedance of the coaxial cable

and that of the antenna coincide with each other. An external

antenna tuner or the built-in antenna tuner is used to adjust the

impedance between the antenna and this transceiver.

Impedance Matching with the Antenna

1 Select a TX frequency.

2 Press and hold F [ANT/PRE] to select an antenna.

•

When an external antenna tuner is connected to the ANT 1

connector, select ANT 2 if the built-in antenna tuner is to be

used.

•

The built-in antenna tuner cannot be used with ANT 1 when

it is connected to an external antenna tuner.

3 Press and hold [AT] to perform tuning.

•

The transceiver switches to the CW mode and starts tuning.

TX output power is automatically configured to 10 W and the

SWR meter will be selected as the TX meter.

•

>> and [AT] LED will start to blink. << >>

blinks when the antenna tuner is ON during reception.

•

To undo the tuning, press [AT] again.

•

If the SWR (standing wave ratio) of the antenna is extremely

high (10:1 and above), an alarm tone (“SWR” in the Morse

code) will be output, and the built-in antenna tuner will be

disabled.

•

Adjust the antenna to lower the SWR before restarting the

tuning operation.

4 Check to ensure that tuning is complete.

•

When tuning is completed successfully, a Morse code tone

“T” is output.

•

When tuning is complete, the blinking << >> and

[AT] LED become lit in solid light. <<

>> blinks when the

antenna tuner is ON during reception.

•

If matching is not achieved for a duration of 20 seconds, an

alarm tone will be output (continuous output of “5” in the

Morse code). When this occurs, check the SWR meter and

press [AT] to stop tuning when the SWR value is low.

●

Tuning of the built-in antenna tuner will not be performed

outside the permitted TX frequency range.

●

During transmission, pressing and holding [AT] starts

the tuning.

●

If matching is not achieved for a duration of 60 seconds,

tuning will end automatically. When this occurs, the

antenna tuner circuit turns OFF, <<

>> will

disappear, and the [AT] LED will go off.

●

If tuning does not end automatically even though the

SWR of the antenna 3:1 or lower, adjust the antenna

system to lower the SWR and try to perform tuning again.

●

The SWR may not reach 1:1 even though tuning has

ended.

BASIC OPERATIONS 4

4-11

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