Swan Electronics SWR-1 Instruction Manuals

1-* i.
*
r =+
-Drm.s.qsloras
r
-
Directional Coupler
1KW
1'
1-l
:1
3.5-150
MHz
50
ohm
RF
Power
SWR
so-239
SWR Meter
POWER Meter
120SM) xsCr,H)
x
65(I-r)rm-
450g.
*
St
Swan
\y
ELEcTRoN
tcS
A
subsidiaty ot Cubic corpoiatian
305
Airport
Road, Oceanside, California
92054
U.S,A,
INSTRUCTION MANUALS
*
Model SWR-I
SWR POWER METER *
Model
SWR-1
is
SWR
&
POWER Meter
with
Directional Coupler installed and
its
character
is
to
measure
the wide frequency range precisely
by very
easy operation.
For SWR
measurement,
it
uses Directional Coupler,
co-
mparing the power supplied to and reflected
from antenna and the
independent
SWR meter indicates the
measurem-
ent.
For power
measur:ement,
the
power meter indicates the travelling wave
power
detr:cted
by Directional
Cou-
pler and
its
frequency range
is
determined
by the flgure of Variable Resistor which
is
for
sensitivity
adjustment,
Model
SWR-1
is
a.
through
line power
meter
in its
construction, so RF' amount
is
not directly
detected
from
co-ar iine. Accordingly, there
is
very
iittle
loss
connecting
it-between transmitter and
antenna
circuit
and
QSO
is
avai14!1e
as
it,is
connected.
SPECIFICATIONS
Measuring method.
Maximum handling power
"
S\,VR indication
iirequency
R.ange
Circuit
Impedance
Measuring Accuracy
.-
Connecter
Meter Sensitivity
+209(t
+
50,4
100pA F.S.D.
100pA F'.S.D.
Weight
OPERATION
*Connection
of
Model SWR-1
1.
Turn off the
outpuu
power
of
transmitter.
Disconnect
the co-ax cable which
leads
to
airtenna
from transmitter.
').
Connect
the antenna terminal
of
transmitter and
the "XMTR"
connecter
of
Model
SWR-1
with
50 ohm
co -
ax cable. This
c,t-ax cable
is
preferably short, and
shoul<i
be less than
I
meter
long.
3.
Connect
the co-ax cable which
leads
to
the antenna
to
the "ANT"
connecter
of
Model SWR-1
.
When
any
antdnna
tuner is set
between
transmitter and
antenna, connect
Modei
SWR
--1
between
transmitter and
antenna
_
tuner.
In
this
case, Any
type of
feeder
is
acceptable between antenna
tuner
and
antenna,
+
SW'R Measurement
x
1.
Turn transmitter
cn, under the condition that
Model
SWR-1
is
correctly
connected.
2.
POWER
Meter and SWR Meter swing at
the same
lime.
Adjust the
center knob so
thattheieftside
POWER
Meter indicates "100.,i50".
This
position
is
"SET." You can now read SWR f,gure
on the right side
SWR
Meter directly.
3.
The indication of SWR Meter
shows
the ratio
of
the travelling wave power from transmitter and the
reflect-
ed wave power from
antenna circuit, so the higher initlcation of
SWR
Meter,
the larger
reflected wave power.
The
reflected wave power
is not
delivered
to
antenna and
it
is
more preferable that
its
power
is less.
If
S\
fR
Meter indicates less than 1.3, the condition is
good. The table
below-
shows
the ratio
of
the travelling
wave
power and the reflected wave power against
the SIVR
figure.
.*' |
*qryIl"-IL
ll_.-rt
W(RFF)/W(IrOR)%
,.;l;*
-h,*-r.oo
r.z
I
o.t,
2.0
]
11.1
r.3 t.zl
]] ,r l
,r.n
1.4
I 2.78
li
e.
o
Zr.
o
4.
In
case
of
Antenna tuner
is
set
between
Model
SWR figure as small as
possible.
SWR-1
and
antenna, adjust Antenna Coupler
to
make
rf:t.
L,'"i.}i
i'
ib:'
F