Yaesu FT-411 MKII Operating Manual - Ft-411
FT-411
MKII
O
PERATING
M
ANUAL
11
Operation
descriptions, keep the •FT-411
MK
Ⅱ
Operator’s Quick Reference Card” handy in case
you need to refresh your memory.
P
RELIMINARY
O
PERATING
I
NFORMATION
Before operating the transceiver for the first time, charge the battery pack completely (if
using Ni-Cd batteries) as described on pages 8 and 9. If using the FBA-17 battery case,
install the batteries as described on page 8.
Connect the YHA-16 rubber flex antenna to the antenna jack on the top of the transceiver.
Never operate the transceiver without an antenna connected.
For now, do not connect a Speaker/Mic or Headset (until you are familiar with basic operation).
Before proceeding, please read the Controls and Connectors chapter if you have not al-
ready, to familiarize yourself with the controls. Note especially item
‚
on page 6, which
describes the terminology used in this chapter when referring to the keys.
Except for certain special cases mentioned later, the keypad functions as a DTMF (Dual
Tone Multi Frequency) tone generator during transmission.
If you have trouble getting the transceiver to work as described, see “In Case of Prob-
lems” on page 24.
S
QUELCH
S
ETUP
Set the SQL control fully counterclockwise, rotate the VOL control out of the click-stop
and adjust for a comfortable volume on the noise or received signal. The BUSY/TX indi-
cator LED should glow green. If a signal is present, rotate the DIAL selector on the top
panel to a channel where only noise is heard.
Adjust the SQL control just to the point where the noise is silenced and the LED is extin-
guished. If the SQL control is set further clockwise, sensitivity to weak signals will be
reduced. Now, whenever a signal reaches the receiver that is strong enough to open the
squelch, the indicator will glow green.
Note that while receiving, one or more bargraph segments may appear along the bottom of
the display, indicating signal strength on the receiving frequency. This indication is not
affected by the squelch setting, so even squelched signals may have some indication. If you
notice more than one or two bargraph segments appearing while the squelch is still closed,
try reducing the squelch control setting (if you want to hear weak signals).
The Monitor switch on the USA versions (just above the PTT switch) allows you to check
for channel activity beneath the squelch level and to adjust the volume without having to
adjust the squelch: just press the Monitor switch and the squelch will open.
Above the Monitor switch (the Burst switch on European versions) is the Lamp switch.
Press it to light the display and keypad.