Cessna 172P - SSB HF TRANSCEIVER (TYPE ASB-125)

PILOT'S
OPERATING
H.ANDBOOK
SUPPLEMENT
13
SSB HF'TRAIVSCEIVER
(TYPE
ASB-12õ)
SUPPLEMENT
SSB
HF TRANSCEIVER
(wPE
ASB-125)
sEcTloN
I
GENERAL
The ASB-12õ
HF transoelver
ie
an
airbome,
lO-ohannel,
single side-
band
(SSB)
radio
witJr o oonpatibls
q¡nplitude
modulated
(AM)
transmitting-reoeiving
system for
long
r&ng€
voioe
communicatione
in
tJre 2
to
18
MHz frequency ra,nge. The systen ooneiste
of
a
panel
mounted
receiver/exciter,
a rem.ote
mounted
power
a,mplifier/power
supply'
an
antenna
coupler
and an externally
mounted,
fixed
wire,
medium/high
freguency
antenna.
A
channel seleotor
knob detemiuee
the
operating
frequoncy
of
the
transceiver
whioh has
predetemined
orystals
inetalled
to
provlde
tJre
desired
operating frequencies.
A mode seleator
oontrol
is
provided
to
supply
the type
of em
either sideband,
AM
or telephone
for
publi
b, clarifier
knob
and
squelch
knob
are
provided
to
asslst in audio
operatlon during
receive. In
additiou
to tJre
aforemeutioned
controls,
rchioh
are all
located on the
receiver/exciter,
a
meter is inoorporated to
provide
antenna
loading
readouts.
The
system
utilizes the airplane
mlorophone,
headphone and
speaker.
Operation and description
of tbe
audio control
panels
used
iu
oonJunction
with this
radio are
sbown and deeoribed in anotJrer supplement
in tJris
section.
80
May
1980
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