Am Receive - Yaesu FT-530 Manual

r
d
)-
It
l-
1-
e
I.
ory, priority monitoring ceases and operation stays
on the priority memory.
To set up priority monitoring:
o
Preset the squelch, and store the frequency to be
monitored in a memory (this must be memory 1
if you will be operating on other memories dur-
ing priority monitoring).
o
Press
(~)
to operate in the VFO mode, or else
select the memory you want to operate on, and
then press
Cl!ID
-7
@.
A "P" appears in the memory box, and about
every five seconds the displayed frequency shifts
to the priority memory briefly while the receiver
checks for a signaL
As long as no signal appears on the priority
memory to open the squelch, you can tune, trans-
mit and receive on the VFO, or select other memo-
ries (memory labels are displayed only while
changing). If a station you wish to talk with ap-
pears on the priority memory, press the PTT
switch momentarily while receiving their signal, to
stop priority checking. Otherwise, when a signal
appears on the priority memory, priority ,checking
will pause and the decimal on the display will
blink. Priority monitoring will resume according
to how you set the scan-resume mode - either
after a 5-second pause, or after the carrier drops.
To cancel priority monitoring manually, press
PRI
~.
Note that you can use any memory (besides
memory 1) as a priority channel in the above pro-
cedure when you are going to
be
operating in VFO
mode. You cannot, however, switch VFOs, or be-
tween memory and VFO operation, without first
canceling priority monitoring (pressing
@
or
@
cancels priority monitoring).
AM Receive
Your FT-530 has an AM detector that can be en-
abled on the VHF receiver to pennit reception of
amplitude modulated signals (useful for air-band
reception in versions with extended receiver cover-
age). To turn it on:
Press Cl!ID
-7
m
-7
C!!0
-7
@ , ("
A3
on"
will appear), then press
cD
or the PTT. This
setting affects all reception on the VHF receiver, so
don't forget to turn it off for FM reception by
repeating the above sequence
("A3
OFF").
35
37
CTCSS Tone Frequencies (Hz)
67.0 94.8 131.8 186.2
69.3 97.4 136.5 192.8
71.9
100.0 141.3
203.5
74.4 103.5 146.2 210.7
77.0 107.2 151.4 218.1
79.7 110.9 156.7 225.7
82.5 114.8 162.2 233.6
85.4 118.8 167.9 241.8
88.5 123.0 173.8 250.3
91.5 127.3 179.9
-
at the left, and if UHF, at the right). Press Cl!ID
-7
rn
again (or just
rn
if the alternate key func-
tions are still active) and both
"T"
and
"50"
(de-
code) will be displayed together as the tone
squelch system is activated for both transmit and
receive (only incoming signals "encoded" with the
matching tone frequency open the squelch).
Pressing Cl!ID
-7
rn
once more turns off tone
squelch features.
You can set a different CTCSS tone (and en-
code/ decode state) in each VFO (A and
B)
on each
band, as well as in each memory, just as you would
The Ff-530 can be used to access repeaters that
require a CTCSS (continuous, subaudible) tone,
and to silently monitor for calls on busy channels.
The encode
("T")
function superimposes a sub-
audible tone (at a frequency too low to be heard)
on the transmitted carrier. The decode
("T 50" -
tone squelch) function monitors receiver audio
through a narrow filter at the same subaudible
frequency, keeping the squelch closed until you
receive a matching tone.
To check or set the current CTCSS tone fre-
quency, press Cl!ID
- 7 0
to see the tone frequency
displayed in Hz. To change the selected tone fre-
'luency, turn the DIAL selector or press
r::)
or
cD
until the display shows the tone frequency
you require (the display will step through the stan-
dard EIA tones, listed in the following table). Press
05
again alone to return to the operating fre-
quency display when the desired tone frequency is
displayed.
To activate CTCSS functions press C!!0
-7
rn
when the operating frequency is displayed. With
one press,
"T"
(encode) appears at the top of the
channel display and the tone generator is activated
for transmission on that channel (if VHF, it must be
r
cress
Operatioo
I