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4
RECEIVE AND TRANSMIT
■ Data mode (AFSK) operation
When operating RTTY,SSTV, AMTOR or PACKET
with your TNC and/or PC software in the AFSK mode,
consult the manual that comes with the TNC and/or
the software.
q Connect a PC and TNC to the transceiver. (p. 2-9)
w Push a band key to select the desired band.
e Push
SSB
or
AM/FM
to select the desired op-
erating mode.
r Push
DATA
to turn data mode ON.
•Oneof“-D1,”“-D2”or“-D3”isadditionallyappears.
•Duringdatamodeselection,holddown
DATA
for 1
second to select data mode 1 (D1), 2 (D2) and 3 (D3)
in sequence.
t Rotate the main dial to tune to the desired signal
and decode it correctly.
•AlsousethetuningindicatoroftheTNCorsoftware.
•DuringSSBdatamode,the
1
⁄4 tuning function can be
used for critical tuning.
y Operate the PC (software) or TNC to transmit.
•WhenoperatinginSSBdatamode,adjusttheTNC
output level so that the ALC meter reading doesn’t go
outside the ALC zone.
NOTE: When data mode 1 (D1) is selected, the
audio input from the [ACC1 (pin 4)] is used for
transmission instead of [MIC]’s. (Modulation input con-
nector can be changed in ACC set mode (pp. 12-7, 12-8).
DATA1: [ACC], DATA2: [MIC] and [ACC], DATA3: [MIC] are
defaut settings. )
ThefixedconditionisusedforSSBdatatransmis-
sion as follows:
•[COMP] :OFF
•Txbandwidth :MID
•TxTone(Bass) :0
•TxTone(Treble) :0
✔ For your information
Carrier frequency is displayed when SSB data mode
is selected.
Seethediagramtotheleftforthetone-pairexample.
170 Hz 2125 Hz
2295 Hz
Mark Space Carrier frequency
(displayed frequency)
Main dial
Band keys
[AF]
AM/FM
DATASSB
• Mark and Space tones of RTTY in the AFSK
mode operating in the LSB mode
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