Sstv; Operation With A Phone Patch; Use Of Monitor Switch; Novice Operation - Kenwood TS-820 Operating Manual
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Also See for TS-820:
- Service manual (109 pages) ,
- Operating manual (44 pages) ,
- Manual (11 pages)
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4
.20 SSTV (SLOW SCAN
TV)
O
PERATION
SSTV
operation can
b
e
accomplished
by
simply
connecting
the
output of
SSTV camera
to
the
PH ONE
PATCH
IN
jack
(or
MIC
connector)
and
t
he
input
of
SSTV
monitor to
the
PHONE PATCH OUT
jack
{or
SPEAKER
jack).
When transmitting signals from the SSTV cam
era.
adjust its
·
output
so
that
th
e
mput power
of
the
final
stage is less
than
1 OOW {less
than 125
rnA
lp).
4 .21 OPERATION WITH A
PHO
N
E PATCH
Th
e
r
S-820
has rear
panel
jacks to facilitate using the
TS·
820 with
a
ph
one_
patch.
The
PHONE PATCH OUT
jack has
an
imp
edance
of 600 ohms and the
PHONE PATCH IN
jack
requi res a
high
Impedance
input.
See
the instruction
sh
eet
of
the phone pa
tch
for cabling instructions
4
.22
USE
OF
MONITOR
SWITCH
To
mon1tor the
quality
of
transmit signal
during
SSB
operation. set
the MONITOR
switch
to ON
to
demodulate
part
of transmit IF
signal.
This
feature is
useful
when
ch
ecking
modulation conditions
or
adjusting the
RF
speach
processor.
When
monitoring.
use
a headphone to avoid
howling
effect.
No
te
that if
the
H.
SW
switch
is O
FF
or the DRIVE
k
nob
ts
incorrectly adjusted.
the
ALC
circuit
does
not operate
properly.
causing the level o
f transmit lF signal
to
become
extremely
high
which
results is
distortion
in
the signal
being
monrtored.
8828
RECEPT
ION
CAR
.
CW
FILTER
POS
I
1
rt0N
;~8-F~l.:~A
----
-
--
--
-~
I
I
(
I
I
l
I
I
I I
I
I
l
I
\
I
I
I
\
:
:
I
I
\
:
:
:
:
I
8829
.
/
8830
8831 8832
(kH
l)
MARK
(WIDE!
6829 85
MARK (NARROW)
SPACE
8830.53
8830
7
Fig.
1
0 RTIY Frequency
4 .23
NOVICE OPERATION
The
Kenwood
TS-820 offers
the
unique
opportunity
to the
ueg1nning
amateur
of buying
a top
quality
ham
rig which
adapts to
novice
operation at very little
co
st
.
So
the
initial
equipment
invest
ment is
good
for
what ever
level
of license
to which \he operator advances.
For
the
novice to operate
the Kenwood
within
the
legal
po-
w
er
limitation.
all
he
h
as
to do
is
remove one
of
the
final
tu·
bos
from the
ftnal RF
section
and
replace
1t
with
a low
cost
module available from
your
dealer.
Alternately
adjust
th
e
carrier
level
con
trol
to
keep
th
e
plate
input power
belo
w
75
w atts
(approximately 90 mal. Adjusting th
e
carrier
level
yields much less power outpu
t
because it redu
ces
the
effi·
ciency or the
rubes.
FSK
NARROW
FSK WIOE
i~
t
!
:a
CARRIE
R
ur•iiT
0
0
~
0
0
0
0
Fig.
11 Change of
the
FSK
W
ID
E-NARROW
23
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