Operation
28
Preamplifier / pre-attenuator PRE/ATT
2
、
The switching order will follow the following cycle:
The preamplifier can be turned off when the shortwave low frequency band (less than 10MHz) is in operation. At the moment, the signal
direct access is more conducive to the improvement of the reception effect and avoid the obstruction of the receiver caused by the strong
interference signal. In general, as long as the S table is observed to be changing, the preamplifier may not be turned on.
Preamplifier (PRE) and pre-attenuator
(ATT)
can
improve
receiver
listening
performance. When the signal is weak, the
preamplifier can be turned on to improve the
signal intensity. When the signal is strong, the
front attenuator can be turned on and the signal
intensity can be reduced. You can also choose
to turn off the circuit unit to get the signal
through.
Operation method:
1
、
Short
press[
PRE/ATT
]
button,this
function can be activated.
X5105
T/R DATA LINK
LOCK
PRE
ATT
MODE
MENU
V/M
A/B
NB
RIT
ATU
Po
<
PRE/ATT
ATT
PRE
OFF
