Operating instructions

Page 17VX-1700 OPERATING MANUAL
OPERATION
TRANSMISSION
 For Voice transmission, close the PTT (Push To Talk)
switch on the microphone; the transmitter will now be
activated (note that the “ ” icon will be illuminated
on the LCD display). Hold the microphone about 1
inch (25 mm) from your mouth, and speak into the front
of the microphone in a normal voice level. Release the
PTT switch to return to the receive mode (the “ ”
icon will be again illuminated, and the “ ” icon will
go out).
 For CW (Morse Code telegraphy) in the A1A mode,
begin sending using your telegraph key or electronic
keyer. The VX-1700 will automatically be placed in
the transmit mode when you start to send, and will re-
vert to the receive mode when you stop sending. As
you send, a “Sidetone” audio generator allows you to
monitor your sending.
 For Data transmission (including Morse Code telegra-
phy using a TNC (Terminal Node Controller) and key-
board, or similar computer-driven data transmission
devices), transmit/receive control is exercised by the
software which accompanies the data transmission
equipment in use. See the User’s Manual for your ter-
minal equipment for operating instructions. Remem-
ber to follow the maximum power output guidelines
during continuous-duty operation such as RTTY (Ra-
dio Teletype) in the J2B mode. Adjust the TX Audio
level from the TNC for a maximum of 50 Watts of
power output (5 or 6 segments illuminated on the Power
Output Bar Graph) if long periods of continuous trans-
mission are anticipated.
Antenna Tuning Procedures
When the optional FC-30 or FC-40 External Antenna
Tuner is installed, it is activated on each channel auto-
matically.
If the “ ” icon will appears at the upper right corner on
the LCD display while transmitting, the antenna system
may require retuning. Use the following procedure.
 Be certain that all connections to the FC-30/-40 have
been properly made.
 With the appropriate channel selected via the Main
Dial, press the keypad’s
[
3
(
TUNER
)]
key. The
“ ” icon on the LCD Display will blink, and
the VX-1700 will transmit for a short time. Thereafter,
the transceiver will return to the receive mode, and the
“ ” icon will now be illuminated constantly.
 The FC-30/-40’s microprocessor-based circuitry in-
cludes memory sufficient to retain 100 (for FC-30, 200
for FC-40) antenna tuning settings in memory. This
will greatly reduce frequency change time. If you uti-
lize more than 100 or 200 operating channels that are
widely removed in frequency, the new tuning settings
will be over-written on a first-in, first-out basis.