Sharp FV-1800 Service Manual page 6

CAR ANT. ADJUSTMENT
(In case of car use, set the switch (SW6) to "Car (2)" position.)
Signal generator Receiver
Adjustment
Step | Band Connection to receiver Input signal frequency Dial setting Remarks
1 | MW | Use radiation
loop. Loop| Exactly 600kHz.
(400Hz | 600kHz
Adjust for maxi- | Adjust
the MW = an-
of several turns of wire, or | 30%, AM modulated.)
mum output
on | tenna coil (L14, L202).
place generator lead close speaker voice coil | (See NOTE A)
to receiver for adequate lugs.
signal pickup.
Connect generator output
to one end of this wire.
2 | MW|
Same as step 1
Exactly 1400kHz. (400Hz, | 1400kHz
Same as step 1
Adjust the MW = an-
30%, AM modulated.) tenna trimmer (C21,
C203).
(See NOTE A)
3 | MW| Repeat steps 1 and 2 until no further improvement can be made.
4 | LW | Same as step 1 Exactly ~ 180kHz. (400Hz 180kHz Same as step 1 Adjust the LW = an-
30%, AM modulated.) tenna cail (L13, L201).
(See NOTE A)
5 | LW | Same as step 1 Exactly 350kHz (400Hz, | 350kHz Same as step 1 Adjust the LW an-
30%, AM modulated.) tenna trimmer (C22,
C204).
(See NOTE A)
6 | LW] Repeat steps 4 and 5 until no further improvement can be made.
: I5pfd
65pfd CAR ANT. JACK
(R = 80—R')
R'= out put impedance
of signal generator
pe
SIGNAL GENERATOR
Figure 3