Autek Research WM-1 SWR Instructions Manual

Tipo
Instructions Manual
I
INSTRUCTIONS
WM1
SWR/WATT
METER
PRICE•
$2.00
A.
POWER
8 .
Rl'
HOOKUP
C,
OPERATtOI'I
D.
CALIBRAT10N
CONTF,NTS
E.
OPERATING
CAUTIONS
1'.
IN
CASE
OF
TROUBLE
3
...
G.
THEORY
-of"
OPERATION
11
.
TYPICAL
i'ERFORMANCE
CHARACTERISTICS
I .
',o/ARRANTY
J,
SERVICE
AND
RETUIUIS
K.
LATE
I'IOTES
Your n
ew
WHl
SWR
wattm
eter
has
been
tho
roughl
y
test
ed
t w
lce
b
efore
shipmen
t.
Please
read
the
instructions
carefully
for
b
esc
resultt
, and a
ave
th
em f
or
futur
e
reference.
A.
POWER
The
WH1
needs
+9
to
+1
8 vdo
at
approximately
15
ma.
Plug
the
115
vac
adaptor
into
the
jac
~
at
th
e
lef
t
rear.
Th
e
WH1
may
also
be powered frora a
battery.
A 9
vol
t
bat
t
ery
ls
marginal
,
but
usable
. The
first
ef
fect
of
reduced
voltage
le
that
tho
SWR
reading
cannot
reach
lnflnlty,
but
will
still
be
accurate
at
lower
readings
.
The
meter
wtll
typically
read
S>~
'
s
to
3 1
with
B+
as
lov
as
8
volts
, and
accurately
lndlcate
po
~e
r
as
low
as
7
voles
.
In
220
volt
countries
obtain
an
AC
adaptor
locally
as
we
do
not
carry
theta.
If
using
small
batteries
you
may
want
to
clip
one
lead
to
the
LED
(does
not
vold
warranty)
since
the
LEO
oonsUJDea
about
2/3
of
the
power.
s: Rf
HOQKUP
Connec
t
the
tranemltter
to
the
co
ax
--onnec'tor
so
marked
. Connect
the
antenna
coax
or
antenna
tuner
to
the
~
outpu
t
connector.
(If
these
are
reversed,the
meter
reads
reflected,
not
Co
rw
a
rd.
POWer
and
the
SWR
reading
wil
l be
off
sca
l e .)
C.
OPERATION
Select
the
low
est
ran~e
sca
le
Cor power ln
use.
Select
average
or
PE
P.
PEP
stands
for
"pea
k-envelope-power
and shows
the
peak
output
power,
even
if
this
peak
lasts
only
a 'few m
illiseconds.
PEP
ls
me
asu
red
by
electronic
olrouitry
whi
ch
respo
nds
much
fas
t er
than
th
e
meter.
(The m
eter
takes
a
fr
a
ctio
n
of
a second
to
swing
to
t he
internal
olootr
onic
true
PEP
power.)
~ote
that
SWR
ts
oomputed
automattcall~
and
dis
pla
yed
directly
.
Unllk
e
vi
rt
ually
all
other
meters on
the
marke
t,
th
ere
is
no need
to
do a
full
scale
ad
justm
ent
or
co
mpu
te
5
WR
wi
th
a nomograph .
Any
variation
of
SWR
reading
with
power l
evel
is
due
to
a
small
voltag
e
drop
in
the
diodes
in
the
Rf
haad.(The
small
bo
x.)
This
phenom
ena
occurs
with
virtually
all
meters
in
t he
under
$5
00
claaa
. The
indicated
5WR
will
d
ro
p
notic
ea
bly
at
1/10
full
scale
, and
at
eve
n
higher
scale
readings
on
the
20
watt
aca
le.
However,the
meter
ls
usab
l e
!or
nulling
antenna
tuners
and
chec
king
ge
ne
ral
antenna
condition
at
powers
as
low
as
1/2
wa
tt
or
lower
.
USE
THE
LOWEST
RANGE
SCALE
THAT
DOES
NOT
PEG
THE
POWER
METER
FOR
HO
ST
AOa.JRATE
R
EADINGS
.
Wh
en
using
"PEP"
you
raay
be
su
r
prised
t o Clnd
ttui
t
PEP
reading
on
558
La
not
much
different
t han
the
PEP
or
AV
reading
with
"key-down•
CW
.
THIS
IS
NOR
MAL.
M
odern
5S8
tran811itt
ers
w
ith
corapression
and/or
ALC
are
peak-
PO
w
er
H11lted
on
558
and
CW
,
When
sending
a
strlng
or
dote
you
will
probably
notice
an
increase
in
PEP
(va
. keydown.)
This
La
due
to
a
slightly
smaller
droop
ln
trane~ltter
pOwer
supply
vo
ltag
e ,
yielding
increased
peak
power.
PEP
is
generally
used
on
SS
B, and
AV
i s
used
for
tuneup.
Switching
to
AVon
SSB
produc
es
a
noisy,
low
SSB
power and
SWR
reading.
The
PEP
feature
also
allows
you
to
comply wl.th
latest
FCC
rules
allowing
1500
watts
PEP
QUTPVT
on
many
bands and
for
moat
classes
of
llcen
sees
.
The
SWR
reading
in
the
PEP
position
will
be
accurate
for
reasona~ly conti~JOus
speech,
but
is
designed
to
decay
much
faster
than
the
PEP
power
reading.
This
allows
almost
instant
response
to
antenna
tuner
adjustments
when
talking
on
SSB.
Incidentally
,
try
this•
Transmit
a
contino
us
carrier
on
CW
(key
down
.) .
Note
the
power
reading
in
the
AV
position.
Then
switch
th
e
WM1
to
PEP
.
You
'
ll
probably
notice
a
sligh
t i
ncrease
in
PEP. No,
the
P
EP
detector
isn
' t wrong! y
ou'r
e
measuring
the
increase
in
PEP
power
caused
by
the
ti
ny
ripple
on
your
power
supply
voltage
!
Occasionally,
you
may
want
the
me
t
ers
to
decay
faster
when
switching
to
a lower r an
ge
scale.
Simply
switch
monentarlly
to
AV
, which
discharges
the
PEP
circuit.
D.
CALI
BRAII!li
Your
WM1
is
calibrated
using
an
air-cooled
I
KW
50
oM
%
0.1
OM
"driftless"
load
and a
special
technique
to
measure
power which
is
accurate
to
less
than
1/2
percent.
It
is
unlikely
you have
equipment
of
this
accuracy.
(Two
~4
instrumen
t s
can
disagree
by
as
much
as
10%.)
For
example
dummy
l
oads
commonly
used
by
hams
can
vary
from 3g
to
63
oMs
in
our
experience
,
even
though
specified
as
accur
ate t o
5%.
Worse
yet,
most
drift
10
or
more
ohms
wh
en
hea
t
ed
!
The
complete
calibratio
n procedure
is
shown
belo
w.
(Note
steps
1,
,3
,and 4
ma
y be do
ne
without
fear
of
d
egrading
factorT
accu
racy,
St
ep 1,
especially
, m
ay
h
ave
to
be
performed
occ
a
si
onal
ly
. )
1.
Wi
th
DC
power
app
l
ied
to
the
WM
1
(!.ED
lit)
,
but
your
transmitter
off,
mechani
ca
ll
y
zero
both
meters
with
the
front
-
panel
mete
r
screws
using
a
screwdriver
.
2.
Connect
the
remote
head
to
your
transmitter
and a
load
known
to
be
50
ohms
r
esistive
at
the
frequency
tranemitted.(lf
you
use,
say,
a 40
ohm
load,which
is
off
by
20~,your
power
calib
r
ation
would
be
off
by
201.
at
50
oMs
, and
SWR
would
not
read
correctly.)
YaJ
should
preferably
transm1c
on
40
meters
(7
mHz)
.
While
tranamittl.ng
CW
ad
just
the
trinvt~er
capacitor
in
the
remote
RF
head
until
SWR
reads
1•1
or
as
close
as
possible
. Use 20-200 waccs i f
possible.
3.
Reverse
coax
connect
io
ns
to
Che
RF
head,
so
chat
your
transmitter
is
co
nn
ected
to
the
output
and
the
load
is
connected
to
c
he
i n
put.
Disconnect
one
wir
e
going
to
che
S
WR
meter
to
av
oi
d
pegging
this
meter
.
You
'
re
no
w
rea
din
g re
fl
ected
pow
er
, which
is
much
more
sensitive
th
an S
WR
. Touch up
the
trimmer
to
yield
lowest
power
reading
.
'•.
Reverse
coax
connections
to
the
Rf
he!ld
agaln
so
that
the
transmitter
i.s
connected
normally
to
the
input.
Reconnect
the
wire
to
the
SWR
meter
.
Disconnect
the
load
from
the
Rr head
output,
leavlng
XOTHING
connected
co
che
RF
head
ou~put
coax
connecto~
,
not
even a
short
length
of
coax
.
Transmit
less
than
200
watts
CW
(no
linear)
and
adjust
the
SWR
trimpot
on
the
circuit
board
(see
drawing)
so
that
the
SWR
meter
reads
infinity
(full
scale
.)
Do
this
on
40
meters
if
possible
,
for
best
accuracy.
s. Connect
your
accurate
50
ohm
load
ns
in
seep
2.
Nith
a power
meter
of
known
accuracy
in
series
with
the
WHI,
adlust
the
PWR
trimpot
on
the
circuit
board
(see
<Jra••ing)
until
the
lvH1
reading
agrees
with
the
reference
power
meter
.
Be
sure
SWR
is
\ol
.
E.
OPERATING
CAU
TIO
NS
Never
run
the
WI-ll
at
all
SIVR
g
reat
er
than
'" l
with
pow
er
greater
than
300
watts.
This
could
possib
l y
burn
out
the
RF
head, which
is
not
covered
by
warranty.
These
limits
are
quite
conservative.
Your
linear
is
likely
to
arc-over
before
the
WML
is
damaged. However,
to
be
safe,
check
SWR
before
switching
on
your
linear
. Never
short
the
WMI
Rf
head
output.
This
could
melt
the
Rf
wire
in
the
head.
F. W
CASE
OF
TROUBLE
1
HEIER
DAtlACED
This
is
extremely
rare
.
Damage
is
not
always
visible
by
looking
at
the
unopened box .
All
shipments
are
insured.
Keep
the
orig
in
al
box and
packing
material
and
report
damage
to
the
shipper
(usually
UPS)
.
Once you do
this
, you
will
not
have any problems
collecting
.
We
do
this
for
you,
and
wlll
slllp
a
..
replr.cement upon r
ece
ipt
of
the
damaged equlpment.
2.
MEJE:R
!lEAD
.
POWER
OR
S1VR
READING
TOO
LOI~
Check
po
w
er
sourc
e.
Be
su
re
meter
has
a
DC
supp
l y
attached
as
ln
section
A, and
that
voltage
is
pr
oper
.
NoteoAC
adapto
rs
are
tested
by
the
manufacturer
,
not
by
us
. Shoul d you
receive
a bad
AC
adaptor
,
write
or
call
and
we'll
get
you o
ut
a good one
lmm
ed
lately.
Examine
the
RF
head.
tf
you've
shorted
the
head
output
the
wire
through
the
toroid
cay
have
overheated
.
Simply
replace
the
wire.
If
vou'
ve
subjected
the
head
to
high
SWR
at
high
power,
the
white
portion
of
the
trimmer
capacitor
may
be
cracked
or
singed
.
We
can
send
you a
replacement
for
$5
ppd
USA
.
If
you '
ve
shorted
any
RF
head board component
to
either
coax
connector
,
say
whil e
adluscing
the
trimmer
, you '
ve
probably
blown
both
diodes
.
Replace
these
wlth
any
GERMAI'IIUM
dlode
,
available
at
Radio Shack. li\I34,1N270 ,
and
others
are
su
it
able.
llam
aga
to
the
RF
head,
especially
the
trlmmer
capacit
or
cnn al
so
be
caused
by
light
ning
. A
direct
strlke
ls
not
necessary.
Th
i s
ls
also
not
covered
by w
arra
nty
.
Again,
note
that
slmply
replacing
thcdamagecl compone
nt
and a minor
recalibrat
i
on
is
sufficient.
(Unless
the
toroid
or
33
ohm
resistors
are
damaged.)
3.
SWR
Rli:ADING
TOO
HIGH
/PO\vER
TOO
liT
Gil
a.
Be
suro
input
and
outpu
t
on
RF
head
arc
not
reversed
.
b.
Especially
lf
this
occurs
only
at
high
power
nnd
is
more
apparent
ln
PEP
position,
it
could
be
arcin&
(spark)
in
your
transmitter,
linear,
or
antenna.
c.
RFT
.
See
below. Cou
ld
also
cause
low
readings
.
This
may
indicat
e
RF
flowing
in
cables
or
power
connected
to
the
main
meter
box,
or
direct
RF
pi ckup. The
IVMI
ls
ex
tensive
ly
tested
in
a
high
POWer
RF e
nvi
ronment .
How
eve
r,
ex
treme
or
unusual
co
ndi
tions
might
e
xist
in
some
shacks
which
could
cause
a
problem.
(lve
test
at
I
KW
with
the
antenna
only
15
feet
a
way
with
no problem .)
Be
sure
th
e
meter
.
is
not
near
unshielded
feedlines
or
coils
carrying
power. The
top
of
the
antenna
tuner
or
line
ar
may
not
be
the
best
location.
If
readings
vary
as
the
main
meter
cabinet
is
moved
around
,
the
problem
is
probab
l y
direct
radiation
into
the
unit
.
Find
a good
location
or
reduce
the
radiation
fro~
the
source.
More
likely
ls
a ground
loop
.
If
the
~eter
reading
does
not
vary
when
the
mecer
is
moved
several
feet
,
suspect
ground
loops
.
Typica
ll
y,
transmitted
power
could
be
picked
up
by
the
house
wiring
and
flow
from
the
AC
adaptor
through
the
WHl
chassis
and back
to
the
remote
RF
head.(Using
a
small
battery
would
el
im
inate
this
possibi
l
ity
.) Unplug
the
AC
adaptor
from
the
wall
·~cket.
The
WHl
wil
l
continue
to
operate
for
a
second
or
two .
If
the
reading
instantly
cl>anges
when
unplugged
, you
prob
a
bly
have a ground
loop
.
Try
o I
)Plug
the
AC
adaptor
into
an
out
l et away from
t
he
transmitter.
2)Connect a good
earth
ground
to
your
transmitter
or
linear.
3)
Move
the
WM
L
to
a
different
location.
Note
that
sending
the
unit
back
to
"checkout"
ls
useless,
since
we
will
f~nd
nothing
wrong
with
Lt
.
If
you
experience
persistent
RF
pickup
with
any
Autek
equipment
.
send
a
9"
+ wide
SASE
for
a
~re
detailed
discussion.
We
reali
ze
it
can
be
quite
frustrating
at
first
lf
yeu
have
this
proble~.
Forcunately
,
thlo
problem
is
r
are,
and
we
know
of
no
one
who
has
not
been
able
to
solve
it
)
}
)
)
5 .
MEIER
"STICKS" liT
ONC
READCNG
OR
C
i\>I
I'IOT
GO
BEYOND
A
CERT
AIN
READI"lG
This
could
be
caused
by low
B+
or
batt
ery
voltage.
See
Section
foo.
On
at
least
one
occasion
a
microscoplc
ptccc
of
the
~eter
plastic
~lding
has
broken
off
and
lodged
itself
in
the
meter
~vement
.
The
solution
ls
simple
.
Turn
the
WMl
upside
down
and
shake
the
obstruction
out
of
the
1110vement
.
If
problem
reoccurs,
ren10ve
the
two
screws
Whlch
hold
the
front
panel
of
the
meter
, remove
the
clear
front
panel
,
and
shake
the
obstruction
out.
\~e
believe
thls
problem
is
eliminated
and would
appreciate
a
postcard
if
you
experience
lt
so
we
can
tighten
quality
contro
l
further
.
6.
OTHER
PROBLEMS
See
our
ongoing
"late
no
t
es"
fo
r
reports
of
common
problems
,
if
any,
as
well
as
tips
from owners .
G.
THEORY
Of
OPERATION
See
schematic/block
diagram
. The
RF
head
operates
as
follows•
Capacitors
Cl
and
C5
form a
voltage
divider
for
Rf
voltag~
at
the
head
output.
Toroid
Ll
measures
the
current
flowing
into
the
load
and
l~presses
a
voltage
across
the
33
ohm
resistors
proportional
to
this
current
.
Voltage
at
the
left
of
Rl
ls
proportional
to
voltage
across
the
load
~
current
into
the
load
.
Voltage
at
the
righ
t
of
R2
is
proportional
to
voltage
across
the
load
minus
current
into
the
load.
(Voltages
at
opposite
ends
of
the
torold
are
180
degroes
out
of
phase
,
as
with
all
transformers
.)
Thes
e
Rf
voltages
are
r
ect
ified
by
the
diodes
and
converted
to
DC
va
lu
es
.
\Vi
th
a 50
ohm
load
, Cl
is
adjusted
to
null
out
t
he
vol
tage
between 02
and
the
5V
reference--
this
voltage
is
proportional
co
the
square
root
of
"reflected
power. "
Similarly
the
voltage
between Dl
and
the
5 V
reference
ls
proportiona
l
to
"forward
+
reflected"
pewer,
cheoretlcally.
With
any
load
ocher
than
50 ohms r
es
istive,
the
reflected
pewer
ls
non-zero
and
SWR
is
above
l ol .
Note
chat
all
voltages
in
che
RF
head
are
referenced
to
a
regulated
5
volts
from
the
matn
circuit
board,
not
ground.
The
dravins
shows a
block
diagram
of
the
main
circult
board.
Forward and r
everse
voltage
s
are
scaled
for
the
power
range
selected,
and
peak
detected
by
active
peak
detectors
,
not
just
diodes
. The peak
detectors
have
negligible
error
(less
than
0.1%).
The
forward
and
reverse
voltages
are
th
en
divided
ln
a wide
ra
nge
electronic
divider
ci
r
cuit
accurate
to
0 .
2%
or
better,
and
drift
-
free
due
to
the
precision
resistors
and
voltaee
regulat
or
used
.
Autek
Research
has
supplied
co
mpl
ete
schematics
on
all
other
products.
If
you've
purchased
our
produces
before
, you ' ve
noticed
they
have
significant
technology
advantages,
and
are
usually
less
expens
ive
than
similar
devices
as
well.
As
a
result,
our
engineer-
ing
has
been
at
least
partially
copied
with
a
si
milar
design
.
Often
this
"copy"
is
so
poor
that
it
not
only
costs
us
sales,
but
raises
doubts
about
the
quality
of
our
product
by
inference.("!
tried
a
----
-
act:ive
filter
and
it
didn
'
t:
work
very
well,
so
no need
t:o
cry
Auceks~,
ecc.)
As
a
result,
we're
sorry
we
can~t
supply
a complet:e
schematic
of
the
propietry
circu1try
in
che
WMl.
However,
service
is
available
at
a
very
reasonable
cost:.
H.
TYPICAL
PERFORMANCE
Impedance•
50
ohms
Insert:ion
VSWR•
Less
than
l.lol
Accuracy•
57.
FS
(
8"1.
worse
case)
lOX
of
reading
co
0 .2
FS
Insertion
loss•
Negligible
SWR
Compucat:ion•
Less
chan
lOX
drop
at: 3•1 at:
10
watt:s
(20
wat:t:
range
scale)
Usable
co
~
watt
or
less.
PEP
charge
time
(internal)•
20
ms
or
less.
Frequency
range•
1.5
to
30
HHz.
I.
WARRANTY
We
back
our
produces
~ett:er
than
most
companies--
not
just
90
days,
but
one
!ull
year
.
L
IMI
TED
ONE
YEAR
WARR6NIY•Autek
Research
warrants
to
the
o
rigin
al consum
er
purchaser
that
its
products
shall
be
free
o!
defects
in
workmanship and mate
ri
als
for
one
year
from
the
date
of
purchase.
WARRAN
TY
LIMITA
T
ION
S
Any
components of
the
Rf
head
which
could
'
b&
burned
out
operating
at
high
SWR
and
power
are
not
warranted.
This
includes
,
but
is
not
limited
to
,
the
trimmer
capacitor
.
This
limited
warranty
does
not
cover
, and
we
are
not
respo
nsibl
e
for,
any
product
which has been
modified
by
the
owner, ex
cept
as
provided
for
in
the
instructions,
or
any
malfunction
or
failure
resulting
from
improper
use,
improper
voltage,
lightning
,
improper
service
or
r
epair
by
the
owner
or
his
agent
,
or
from
abuse
, negl
ect,
accident,
f1re
,
use
contrary
co
instructions,
or
other
causes
beyond
the
control
of
Aucek
Research
.
This
warranty
ls
made
co
the
original
consumer
purchaser
only
, and
is
effective
only
upon
presentation
of
documented
evidence
of
provable
date
of
purchase.
This
warranty
covers
only
Autek
products
used
for
purposes
as
advertised.
We
are
not
responsible
for
incidental
or
consequential
damages.
Some
states
do
not
al low ex
clusion
or
llmit:acion
of
incidental
or
consequen
t:
ial
damage,
so
the
above
limitation
or
ex
clusion
may
not
apply
to
you.
This
warranty
gives
you
specific
legal
rights,
and you
may
also
have
ocher
rights
which
vary
from
state
to
state
.
J.
SERV
I
CE
ANP
RETURNS
To
obtain
service
,
FOLLOW
TilE
Ci
tECKLIST
BELOW,
then
mail
to
Autek
Research,
Box
302
,
Odessa,
Fla.
1
33556
I
Our r
ecords
show
your
order,
by
date
of
order
.
If
you
wish
to
claim
warranty
service
you must
do'so
with
t:he
return
.
You
must
tell
us
your
purchase
date
WITHIN
10
DAYS,
or
enclose
a copy
of
check
or
charge
statement.
(
Si
~ply
stat
i ng
"I
bought
the
unit: a few months ago"
is
not
sufficient
to
find
your
order,
and
service
charges
automatically
apply.)
Our
minimum
service
chacge
is
$17
in
u.s
.A.
Enclose
an
additional
$15
outside
US
,
except
an
additional
$5
in
Canada.
We
fix
75%
of
failures
for
the
minimum, and
wtll
proceed
to
$28
without
your
pemission
.
Any
addi
tional
charges
wUl
be
COD.
Please,
no
charge
cards
on
repairs
as
this
causes
a
delay.
CHECKLIST
WHEN
RETURNING
A
UNIT
vl.
Do
not: send
correspondence,
check,
etc
.
separately
.
PUT
EVERYTHING
INSIDE
THE
PACKAGE
WITH
THE
WMl.
Enclose
a check
or
H.O.
inside
the
package.
vf2.
Enclose
a
detailed
description
of
problem
inside
the
package.
.
~3.
Do
NOT
send
separate
correspondence
explaining
that:
you
are
returning
the
unit
,
or
as
ki
ng
permission
co
return
it.
This
is
not
necessary
v'4.
Allow
1-3
weeks Cor
repair
plus
up
to
2 weeks
shipping
times.
Exception•
If
you just:
got
the
unit
we
'
ll
norma
lly
ship
a
replacement
after
confirming
improper
operation
or
damage.
(Only
1
in
4000
packages
are
lost.
If
repair
takes
long
er
, be
patient.
It
' s
not
lost,
we '
re
working on
itl)
.
If
WRITING
V:
l, Always
give
approximate
purchas~
date.
We
may
have
mad
ij a change
in
design
since
.
;12.
Give
full
detaUs
of
probl
em
.
Be
sure
to
tell
us
your
transmitter,
linear,
feedllne
type
,
antenna,
antenna
height.
We
want
to
help
you,
but
mo
st
letters
are
too
vague.
We
have no
idea
of
th
e
condition
or
your
rig,
your
ability
to
follow
instructions,
your
technical
knowledge, and what
you've
tried
t:o
solve
any
problem,
and no
desire
to
carry
on
extens
ive
correspondence.
Include
All
details
in
the
!irst:
letter.
v3•
We
cannot
connent
on
Alii
modifications
to
our
equipment
as
inventive
hams would make
this
a f
ul
l-
time
job.
~4.Enclose
an s;• wide
SASE
!or
a
speedier
reply.
(O.
K.
to
fold
envelope.)
K.
LATE
NOTES
None
to
date.
Ge
Di
od
e
1N
295
Dl
C2
.
00
1
T
!9.JK
r
't.
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0
TOROID ,
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cs
I
.S
O
SHT
4
7K
,
P.
4 4 7K ,R 5
R7
OU
T
1
9.
JK
1
.,
..
I
~
f\
.jl).
u,
I
'"'
"'
> +
(1
"'
!;;!
~
....
P
EA
K
DET
EC
TO
R
l'
K/ ;\1'
+5V
.
VOLTAGE
L-
-----------------1~
--------_.
------iR
EGUL
AT OR
RE
MOTE
ii£A.
5 __ _
MA
I N
BOA
RD
SWR
AD
J
UST
1
'/MJ
CO~u>t;T
IN
G
S
t-'l
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IT
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El
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?Ze.1
eau:lt
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Autek Research WM-1 SWR Instructions Manual

Tipo
Instructions Manual

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