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Eight code abbreviations are supported, namely BT, AR, AS,
HH, SK, KN, BK and SN.
The code abbreviation received is displayed in 2 alphabets. For
example, when “AR” (code with no space between “A” and “R”)
is received, “AR” is displayed.
The codes might not be decoded correctly depending on the
signal quality.
If the keying speed of the target signal changes halfway, the
characters immediately before or after the change cannot be
decoded correctly.
Characters that cannot be decoded are indicated using an
underscore (_).
Time stamp and frequency information can be added to the TX/
RX details display area. (5-28)
This transceiver does not support Japanese characters.
Press [Page Up] / [Page Down] on the USB keyboard to scroll
through the information displayed in the TX/RX details display
area.
Noise Reduction 1, Noise Reduction 2, audio peak filter and RX
DSP equalizer do not function during CW decoding.
Adjusting the Decode Threshold Level
The threshold value for the signal strength to activate decoding
can be adjusted as follows. Raising the threshold level may reduce
erroneous detection due to noise.
1 Press F6 [THLD] in the CW communication screen
to switch to the threshold level configuration mode.
If F6 [THLD] is not displayed in the key guide, press F1
[MORE] to toggle the key guide display.
.
2 Press F4 [–]/ F5 [+] or turn the [MULTI/CH] control
to select a threshold level.
Setting Value 1 to 10 (default) to 30 (1-step)
Adjust the threshold value in the ascending order according
to the receiving status of noise, for example. Start from a
small value between the range of 1 to 30 and configure the
threshold value to a point where reception is good.
Pressing and holding F2 [(RESET)] resets the threshold
level to the default setting.
3
Press F1 [ ] to end the process.
Decode Filter
A decode filter (narrow-band filter used exclusively for decoding)
can be used when there is significant interference or noise while
decoding the Morse code.
Press F5 [DEC.FIL] in the CW communication
screen.
If F5 [DEC.FIL] is not displayed in the key guide, press F1
[MORE] to toggle the key guide display.
Pressing F5 [DEC.FIL] each time switches the decode filter
mode (Off/Normal/ Narrow).
The selected mode is displayed for about 2 seconds.
Transmitting Character Strings via USB Keyboard
Operation
Text input by the USB keyboard can be transmitted in Morse code.
1 Connect the USB keyboard (commercially
available) to this transceiver.
2 Press F4 [QUICK].
If F4 [QUICK] is not displayed in the key guide, press F1
[MORE] to toggle the key guide display.
Press F4 [QUICK] each time toggles the quick mode between
ON and OFF.
<< >> appears when the quick mode is ON.
3 Enter a character string using the USB keyboard.
When Quick Mode is ON:
The characters entered using the USB keyboard appear in the
character string buffer and encoding starts immediately.
When Quick Mode is OFF:
The characters entered using the USB keyboard appear in the
character string buffer. To start encoding, press [Enter] on the
USB keyboard or the F4 [START] key.
Sending a character string using the USB keyboard while the
update of TX/RX details display is paused cancels the paused
state.
The maximum number of characters that can be entered in the
character string buffer is 4300 characters.
To send a consecutive code (code abbreviation), input the
characters after inputting “~” (tilde). The characters are
encoded as a consecutive code until a space is inserted.
For example, when “~ HH” and “~ OSO” are input, they become
the code abbreviations for correction code and emergency
communication respectively.
To start encoding from a consecutive code while quick mode is
ON, input the first character of the consecutive code within the
time interval equivalent to 7 dots (space between words) after
inputting “~” (tilde).
COMMUNICATING AIDS 5
5-11
67


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