Panasonic RF -4800 Operating Instructions Manual page 7

Fm/am 10-band communications receiver
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o
Digital Frequency Display
Indicates the tuned frequency for the SW2-S bands only, show-
ing the main digit(s) and three decimal points in MHz.
Note: No display appears when the Main Band SelectorG) is
set in any position other than "SW2-S" and/or when the Dis-
play Switch@) is turned off.
dl>
SW2-8 Calibrater
Use only for SW2-S reception.
If the digital frequency display does not agree with the fre-
quency of a known station, correct the error by turning the
calibrater with your finger tip until the best reception is ob-
tained. (See page 7.)
G)
SW2-8 Tuning Scale
SW2:
3-7 MHz
SW3:
7-11 MHz
SW4:
11-15 MHz
SW5:
15-19 MHz
SW6:
19-23 MHz
SW7:
23-27 MHz
SWS:
27-31 MHz
~
SW2-8 Band Selector
Choose the desired band, SW2-SWS. This selector has no
effect unless the Main Band SelectorG) is set at "SW2-S".
(i)
Main Band Selector
Set to the desired band.
~
Earphone/External Speaker Jack
Connects the included earphone or optional extra external
speaker (impedance: 4-S ohms). When the plug is inserted,
the built-in speaker is automatically disconnected.
Note: For connecting a headphone, use the supplied head-
phone adapter.
G)
Recording Output Jack
Connects a tape deck for recording from the receiver.
Plug the cable to the tape deck into this jack. Radio programs
can be recorded while listening at the desired volume level
as the sound level at this jack is fixed. The recording level
should be. adjusted by using the control(s) on the tape deck.
~
Auxiliary Input Jack
Connecting another audio source (such as a tape deck, record
player, etc.) to this jack makes the receiver work as an audio
amplifier. Plug the cable from the output of your audio source
into this jack. The sound from the receiver shuts off auto-
matically.
Note: For record player operation, this jack allows only the
type with a ceramic or crystal cartridge to be operated.
iI
Volume Control
C9
Bass Control
Regulates the low tone.
~
Treble Control
Regulates the high tone.
W
BFO Pitch Control
Used to obtain clear SSB and CW sounds.
Properly tune to SSB or CW signals, then.carefully rotate this
control until the signals are most suitable. (See page S.)
~
Light Switch
When tuning in the dark, push to ON. The Tuning/Battery
Indicator0 and a tuning scale being used will be illuminated.
Turn off when the illumination.is unnecessary.
-6-
~
Display Switch
This turns the Digital Frequency Display€) on and off.
For saving the battery power, this switch should be turned off
except for tuning.
@jlndicator Switch
Setting this switch to "SIGNAL" makes the Tuning/Battery
Indicator0 show the tuning condition or relative strength of
received signals. Switching to "BATT" indicates the battery
condition on the indicator0.
~
AM RF Gain Control
Adjusts the receiver sensitivity for MW, or SW (including
SSB and CW) reception. Normally keep it in the full-clockwise
(OX) position. If the station is sufficiently strong to casue
overloading or distortion in the receiver, slowly rotate this
control counterclockwise until clear sound is obtained. This
control has no effect on FM.
~
Antenna Trimmer
Eliminates the difference between the external antenna and
the rE;!ceiver impedances so that incoming signals can without
loss come through the antenna to the receiver.
Carefully rotate it for best reception. This trimmer is used
for SW2-S reception only.
~
MW Ferrite-Core Antenna
Effective on MW only.
For best reception, push the antenna holder down to the
horizontal position (Fig. 15), and then position it in the direc-
tion which provides the best results (Fig. 16).
Note: Do not swing this antenna unless its holder is horizon-
tal, nor swing further over a quarter rotation.
iI
FM Antenna Terminals
Connecting an external FM antenna to these terminals as-
sures excellent FM reception.
e
MW/SW1 Antenna Terminals
An external antenna connected
to these terminals will
improve the quality of the MW and SW1 reception.
For SW1 reception, be sure to connect an appropriate external
antenna (and ground system) to these terminals. On MW recep-
tion, the equipped ferrite core antenna will be enough. If the
MW signals are very weak and the. ferrite core antenna does
not provide good enough reception, connect an external MW
antenna (and a ground system) to these terminals.

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