AOR AR-ALPHA, Operating Manual

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LSB – Lower Side Band – is a form of SSB (Single Side Band). LSB tends not to be used commercially
but is extensively used by Radio Amateurs on frequencies below 10 MHz. This assists the
separation of Commercial and Amateur users on traditionally shared bands.
SSB is a very efficient method of transmission as the unwanted second sideband and carrier are not
present. This allows the full transmitter power to be used to convey information within the wanted
sideband. As a result, long distance communications are possible on SSB in a narrower bandwidth than
required for most other modes.
USB – Upper Side Band – The same comments apply as for LSB. By convention, Radio Amateurs use
USB above 10 MHz.
CW - Continuous Wave – Often referred to as Carrier Wave or Morse Code. Commonly used on the
short wave bands by radio amateurs toward the lower end of each band allocation. Some
commercial use of CW continues but much has been replaced by satellite and automated
communications.
2-5-1 Auto-mode selection
When auto-mode is in use, receive mode and tuning step size are automatically selected by the
AR-ALPHA microprocessor.
To activate auto-mode or reconfirm its selection while in the VFO mode, press the MODE key.
The Mode Select screen will appear on the LCD.
Note : The Auto-mode is cancelled as soon as the receive mode, tuning step or other related data is
changed. Remember that auto-STEP and auto-MODE are linked, reselect the AUTO-MODE if
either have been adjusted and you require the auto band plan selection.
2-5-2 Receive mode selection
The AR-ALPHA has two (2) different mode settings, Simple Select Mode Setting and Advanced
Select Mode setting .