Controlling the linear amplifier at 50 mhz, Controlling the linear amplifier at 50 mh – Kenwood TS-990S User Manual
Page 264
16 USEFUL FUNCTIONS
16-32
Configuration
Operation
Off
The linear amplifier is not controlled.
Active High
While transmitting, the TXSW terminal becomes
12 V.
Active High + Relay
Control
While transmitting, the TXSW terminal becomes
12 V.
The relay is controlled.
Active High + Relay &
TX Delay Ctrl
While transmitting, the TXSW terminal becomes
12 V.
The relay is controlled.
The start of transmission is delayed.
Active Low
While transmitting, the TXSW terminal is shorted
to GND.
Active Low + TX
Delay Control
While transmitting, the TXSW terminal is shorted
to GND.
The start of transmission is delayed.
Note:
◆ If you are not using the control relay, select "Off" or "Active High" to
suppress the relay noise.
◆ To connect the TL-922 or a linear amplifier that requires time to
change the antenna, select "Active High + Relay & TX Delay Ctrl"
from Advanced Menu 11, "Linear Amplifier Control (HF Band)".
◆ If you configure "Active High + Relay & TX Delay Ctrl" in Advanced
Menu 11, "Linear Amplifier Control (HF Band)", the relay functions
when the transceiver starts transmitting. If the transceiver switches
from the receive state to the transmit state, a delay time applied
until the start of transmission is added. Also, it normally takes 10
ms to start transmitting after the signal processing on the transmit
circuit; however, considering the operation with the linear amplifier,
the transmit delay time needs to be extended to 25 ms. The
transmit delay time is not added to operate the transceiver in CW
full break-in mode.
CONTROLLING THE LINEAR AMPLIFIER AT 50 MH
z
To connect the linear amplifier to the REMOTE connector
on the rear panel and to operate in the 50 MHz band, you
can configure to enable or disable the control signal state
and the transmission delay time.
Refer to "INSTALLATION AND CONNECTION" for the
details of connector.
[F1] [F7]
[MENU]
F[ADV]
1 Press [ADV.] (F) from the Menu screen to open the
Advanced Menu screen.
2 Access Advanced Menu 12, "Linear Amplifier Control
(50 MHz Band)".
3 Press [SELECT] (F4) to allow editing of the parameter
box.
4 Press [-] (F4) or [+] (F5), or rotate the MULTI/CH
control to select the control method.
The available parameters are as follows: The default is "Off".
Off, Active High, Active High + Relay Control, Active High
+ Relay & TX Delay Ctrl, Active Low, and Active Low + TX
Delay Control
For the TL-922 or Other Linear Amplifier
You can perform operations by selecting "Active High + Relay & TX
Delay Ctrl".
5 Press [
] (F1).
6 Press [MENU] to exit.
Configuration
Operation
Off
The linear amplifier is not controlled.
Active High
While transmitting, the TXSW terminal becomes
12 V.
Active High + Relay
Control
While transmitting, the TXSW terminal becomes
12 V.
The relay is controlled.
Active High + Relay &
TX Delay Ctrl
While transmitting, the TXSW terminal becomes
12 V.
The relay is controlled.
The start of transmission is delayed.
Active Low
While transmitting, the TXSW terminal is shorted
to GND.
Active Low + TX
Delay Control
While transmitting, the TXSW terminal is shorted
to GND.
The start of transmission is delayed.
Note:
◆ If you are not using the control relay, select "Off" or "Active High" to
suppress the relay noise.
◆ To connect the TL-922 or a linear amplifier that requires time
to change the antenna, select "Active High + Relay & TX Delay
Ctrl" from Advanced Menu 12, "Linear Amplifier Control (50 MHz
Band)".
◆ If you configure "Active High + Relay & TX Delay Ctrl" in Advanced
Menu 12, "Linear Amplifier Control (50 MHz Band)", the relay
functions when the transceiver starts transmitting. If the transceiver
switches from the receive state to the transmit state, a delay time
applied until the start of transmission is added. In many cases,
it takes 10 ms until the beginning of transmit after the signal
processing in the transmit circuitry. In the operation other than
CW Full Break-in, changing the menu configuration extends the
response time to be 25 ms (45 ms for SSB, FM and AM modes).
The transmit delay time is not added to operate the transceiver in
CW full break-in mode.