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5.2.2.3.
Bias delay
Electronic Bias Settings (EBS) is one of significant feature of the power amplifier. It allows to
set low drain current after pressing the PTT regardless of whether you have CW or SSB
mode, until RF signal is no present at the input. At the moment when RF signal comes to the
input of PA, bias will automatically change its value depending on the selected operation
mode. For CW it will stay low (Id = 200mA), for SSB it will move operating point to AB
class ( Id = 2,7A)...... EBS is default activated – Bias delay is set to
ON
.
To deactivate EBS you have to set Bias delay to
OFF
. I such a case bias value after pressing
the PTT will depend on the working mode.
„Settings menu“ appears in the upper line. Select „Bias delay“ in the bottom line. To open
edit mode press
PRE.
Use
UP/DWN
buttons to change status. Press
SET
to confirm new
value and to leave editing.
5.2.2.4.
Preamplifier delay
You can control switching of an external RX preamplifier from the PA using
PRE
button in
operation mode. For reliable working condition and safety of preamplifier there is important
to set some delay of its switching according to the PTT. Possible range is from 0 to 255ms.
Default value is 20 ms.
„Settings menu“ appears in the upper line. Select „Preamplifier delay“ in the bottom line. To
open edit mode press
PRE.
Use
UP/DWN
buttons to change value. Confirm the selected
value by pressing SET.