Tra 4.7.1 Swr Measuring & Ant. Matching; R Ter Operation: General - Yaesu FT-767GX Operating Manual

4.7
Transmitter Operation:
Ac this point you are probably ready
ouc lhe traosmnter.
miulng frequenctes below
500 kl-li frequency segmenLS thac
1
§ 1. l.
teur bands ( and
uslng an antenna desigoed
which you wlsh to operace.
Do not transmlt without a proper antenna
4
(see § 3 . for amenna
Measuring & Antenna Matching
4. 7.1
SWR
Note: To obtain
an
and Lo set lhe automacic antenna
you musc transmit a steady carrier at full
power on the air.
chac the frcquency is nol ln use by other
stations before tuning
firsL w l t b a short
frequency is 1n use, and then llsten care­
f u l l y f o r at least
keying the transmitter for
or ancenna tuning.
Keying the Transmit ter
1 f
you do nOl have a
connecced to the KEY
use che
CW mode for SWR
luning, and use the MOX button (above the
Jack) to key che transmitter during chese pro­
cedures.
J f you have a key or paddles connec­
KEYER
ted, make sure the
slde of the front panei Is
stlll use Lhe CW mode,
squeeze t h e paddles)
wuh the VOX switch on, insLead or uslng che
MOXswitch.
l f you have an externa! eleccronic keyer con­
nected to the KEY jack,
equipped wich a 'cune'
keying tine, use che FM mode and lhe MOX bul­
lon to key the transmiuer.
however, be careful
noises in lhe microphone when transmitting,
that could cause severe interf erence t o other
stauons on nearby frequencies.
Determine now how you will key the transmitter
during the following
station secup.
General
to try
Recall thac valid crans­
30
MHz are only che
include ama­
that you should be
the bands on
ror
informatlon).
accurate SWR reading
cuner
Please make certaln
up. Always ask
transmlssion i f the
seconds before
1 5
SWR
measuring
key or keyer paddles
jack on the rear panei,
measuring and amenna
MI C
swllch at the right
OFF (out). You
bul close the key ( o r
to key the transmiller
not
and if it is
function to short the
case,
ln thls
not to speak or make
as
procedures, wíth your
SWR
( l ) Preset the
leftmost control) fully clockwise.
(2) Make sure the
not, retune t o a nearby frequency and
check again).
Press the DIGITAL SWR
(3)
upper r i g h t
'S WR' will appear a t the right si d e of
(
the di splay
(4)
Select the tune-up mode
deLermined
1
tter' )
Tronsm
( S I
Key che transm1uer,
and note che
on the display.
miuer (return to receive).
l f the SWR was below
SWR swltch again to return to frequency dis­
piay: antenna tunlng Is not necessary.
l í che SWR was above
anlenna tuaer to rematch the antenna if your
operacing frequency Is below
VHF or UHF, you must readjust the antenna it­
sel f.
Antenna Matching
The internai aucomaclc antenna tuner can be
used to match your antenna to the transmitcer
in
che amaceur bands below
anrenna
particular
and you select anocher band,
tings are automaucally stored in memory,
be recalled auLomatlcally whenever that band
is reselecced.
the antenna tuner memories are set for a
ohm load on ali bands.
antenna al any time as described next (the new
sellings wlll overwrite the old onesJ.
After you have set the tuner for your anLenna
and favorice operutlng
rarely need t o reset
be recalled automaucally.
use a different ancenna, don't forget t o reset
rhe
tuner.
- 21 -
D R I V E concrol (ou ter knob,
frequency is clear
butLon near the
corner o f che d a s p l a y
1.
(CW or FM,
above, under 'Keylng
.
wait oae second,
SWR
(digital) lndlcatlon
Then unkey the crans­
1.5, press the DIGITAL
1.5,
you can use the
30 MHz.
30 MHz.
has beea matched on a band
the tuner set­
Before leaving the
You can rematch the
írequencies, you
it - your setcings will
However,
( i f
as
the
lf on
Once a
Lo
factory,
50-
will
i f you