ALC
If the ALC connection is made between the BLA350
Plus amplifier and the transceiver this menu is used
to adjust the output power of the transceiver to that
required for the BLA350 Plus. (10W)
To begin set the trimmer on the rear panel (
]
) to
about mid travel, using a small flat bladed screw-
driver.
Briefly press the SET switch (
^
) and the LCD dis-
play will indicate, as shown above, the current input
power. ALC adjustment should be made in either CW
or FM mode to provide a constant carrier that will
enable easier adjustment of the drive level. (The
transceiver initial power level may be set to full
power if not more than 100W). Transmit with the
transceiver and at the same time rotate the ALC trim-
mer on the rear panel of the BLA350 plus until the
power is set to 10W then press briefly the ’OK’
switch (
]
). At this point when the ALC cable is con-
nected.
The BLA350 Plus will regulate the output power of
the transceiver to 10W or whatever input power has
been set in the ALC menu. Do not exceed 15W input
for the BLA350 plus.
Note: It is recommended to test the input power after
ALC adjustment on various bands to make sure that
the output power of the transceiver remains at the set
value. On some transceivers the power will change
despite the ALC voltage remaining constant. If the
change from band to band is excessive it may be bet-
ter to not use the ALC connection and regulate the
output power of the transceiver manually directly on
the transceiver.
Temp
This menu allows the unit of temperature, Celsius /
Fahrenheit to be selected. Press SET (
^
) to enter the
menu and SET (
^
) to alternate between Celsius and
Fahrenheit then press OK (
]
) to save and exit the
menu.
Int. VOX
Int., (Internal), VOX when enabled allows the
BLA350 Plus to be used if the transceiver does not
have a PTT output. There are two Options ‘Disabled’
and ‘Enabled’. The BLA350 Plus default setting is
‘Disabled’ from the factory. It is recommended that
for CW and SSB that the external PTT input is util-
ised. If Int. VOX is enabled see also menu SSB De-
lay below.
SSB Delay
Allows the delay time from TX to RX to be set when
using the BLA350 Plus internal VOX. When using
SSB this avoids the amplifier returning to RX state
between pauses in speech.
The default setting is 500ms, (0.5sec), cycle through
the choices 0,100,250,500,750 and 1000ms by press-
ing the SET, (
^
), switch and select the selected
choice by pressing the OK, (
]
) Switch.
Fan Speed
The cooling fans operate in conjunction with the heat
sink temperature. It is possible to change the way this
occurs and hence the operating of the fan when in
use:
Quiet Mode
In this mode, ON, the fans only operate when the
temperature reaches 40°C. When set to, OFF, (the
default setting), the fans are continually running at
low speed until the temperature increases to 55°C at
which point they will increase in speed.
Max Speed
When set to ,ON, the fans will run at maximum speed
for 5 seconds, this helps to clean any accumulated
dust from the heat sink. It is suggested this function
is carried out periodically.
Man Setting
It is possible to adjust the speed of the fans when the
heat sink temperature reaches 55°C. There are 9 lev-
els which relate to 20% and 80% of the maximum
speed. The default setting is 5.
M E N U
A L C S e t u p
N o w a d j u s t A L C
P o t - I N
0 1 0 . 0 0
M E N U
T e m p
M E N U
I n t
.
V O X
M E N U
S S B D e l a y
M E N U S S B D e l a y
5 0 0
m s
*
M E N U
F a n S p e e d
M E N U F a n S p e e d
M a n
.
S e t t i n g
5
7
Summary of Contents for BLA350 PLUS
Page 2: ......
