Tone Squelch Operation; Tips For Ssb (Lsb/Usb) Operation; Weak Signal Ss B Recepcion; Ssb - Yaesu FT-767GX Operating Manual

Tone Squelch
4.12
When the opdonal
FTS-8 Tone
installed (and the
fTE-2 Burst
l
ec;! ) the
instal fT-767GX
,
silent monitoring of busy channels
mode, as well as for accessing repeacers re­
quiring CTCSS tones on VHf or UHF (when the
appropríate Band Modules are ínstalled).
í n
Two dif ere t tones may
of the VfOs. Available tone frequencies are
listed in Ta b le 3 on page 36.
To set the CTCSS (subau
( 1)
Press the orange
The display now shows the sel­
twice.
ected tone frequency (in Hz).
(2) Use the BAND/MCH keys to select the
tone frequency
desired
displayed.
( 3 ) Press H/G (ENT)
tone and return
frequency.
To activate tone squelch monítoring,
control counterclockwise
SQL
stop (T SQL
position),
main sílent until a sígnal is receíved wíth a
subaudible tone matching t
the VFO. Other signals not having tbe correct
tone will cause the BUSY indicator to glow,
but will not open the squelch.
To transmit the programmed tone,
switch must ON (depressed ) .
be
tone wíll be senl at ali times while the PTT
closed.
switch is
Operation
Squelch Unit
Unit is not
c;!
be u s
çan ror
e
ín the fM
be t re
s o d, one in each
d l )
b e tone frequenc y ;
i
fUNC (T SET) key
from those
to store the displayed
t o t h e operating
tum
the
click
ínto the
The receiver
will re­
at programmed in
h
the T
ENC
The subaudible
for SSB (LSB/USB)
T ips
4.13
is Although ali of
avallable for SSB operation have already been
described, obtaining
SSB modes requires skillful
these reatures
mainly by experience and experimentation.
tips se
in this
your experimentation,
s t
hor en learning tíme.
S
Weak
4.
13. 1

SSB

Weak signals.,
close to the background noíse levei,
that you
ting
possible to decrease the effects of background
ooise while enhanc
by taking every advantage of t
t
he two.
between
since the SSB squelch ciréuitry caonot
used,
disti nguish between noi
The noise blanker can be useful for reducing
noise, and may be left oo and set to a very
blank
low levei, to
often. occur ( i
f
b
lanker can sometimes
The
lightning crashes,
I f
baa noise.
d
the 'woodpecker'
(like
k g
in (NB) control.
blan
noise
varies widely
season and sta tion location,
xpe
rime nt .
e
The fast AGC setting can b e useful for setting
the noi se b lanker wí th some types or
levei is high
the
deflection. Advance the NB control just to
che point where the $-meter deflection no lon­
ger drops. Fast AGC also helps you to hear
signals 'around' noise pulse noise, by causing
receiver gain
pulse. However,
a bic of a strain,
you have a station tuned in.
once
Once tbe noise blanker and AGC are set up, you
to take
will waot
sensitivity (signal-to-noise
jecti ve here is to obtain a background noise
levei that only
is
t
hout loosing any wanted signals.
w
at a l i ! ) , i
- 29 -
Operation
the contrais and
optimum p r o
rm a
e f
manipulation of
by the operator,
brought
c tion are provided to
and (hopefully)
i gn l SSB Reception
a
by definition, are
l
wil ali
waot to take
i ng signal(s
the desired
h
e differences
cannot be
Of squelch
course,
s
e and signals.
g
transients that
swi tchin
you live in a crowded area).
e lp a little with
h·
but cannot stop
high levei pulse
noíse
)
, advance
just
As the oature of band
frequency,
with time,
you will have t o
enough to cause
S-meter
t o recover quickly after
so
fast AGC al makes listening
try medium or slow
so
steps to
tailor receiver
)
ratio . The ob­
a slight hiss (or
features
n
çe on
on
The
guide
help
very
sugges­
steps
)
,
'white'
appears
the
ir
noi, se
_
a
AGC
nothing