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4.4.7 DESCRIPTION OF CONTROL WINDOW 5
CTCSS
Select a CTCSS tone frequency between 60 and 254.1Hz. The squelch will only open if
that tone is received on the audio signal.
DCS
Set a code between 017 and 754 (or all). The squelch will only open if this signal code is
received.
CW PITCH
Change the CW audio pitch from 300 to 900Hz in 50Hz steps.
AUTO NOTCH
Automatically attenuates beat tones, tuning signals, etc., even if they are moving. 3 levels
of aggressiveness.
DE-EMPHASIS
Decrease the magnitude of higher frequencies for a better signal to noise ratio. WFM and
FM only. Default: 50
μ
sec.
NOISE REDUCTION
Reduces noise components and picks out desired signals which are buried in noise. Audio
signal masking may occur. Set the level for maximum readability.
NB
Removes pulse-type noise. Not effective against natural noise such as atmospheric static.
AFC
Tunes the IF filter's center freq. automatically when an unstable frequency is received.
(Changes not visible on spectrum!)
DTMF
If DTMF tones are present in a transmission, the decoded letters, numbers and symbols
will be displayed in the main control window.
VOICE SCRAMBLER
Decodes voice inverted signals. The carrier frequency can be adjusted between 2kHz and
7kHz, in SETTING > OPTION.
PRESEL
RF preselection filters help to prevent overloading caused by strong out of band interfering
signals. Only for frequencies below 25MHz.
VIDEO
Enables the video-out on the AR2300 front panel. Decodes and displays only analog video
signals. Standard of the video display connected must match the video standard of the
transmission.
VIDEO IF DIRECTION
Changes the video IF direction. Mostly used to receive analog wireless camera signals.
LINE-IN (AUTO RECORDING)
Check the box to start audio recording of the frequency actually received. A ".wav" file will
be saved on your PC in the same folder than this program.
Note: AR2300 line-out needs to be connected to line-in of the PC audio card.
(To record to SD card, go to FILE > SD CARD)