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(1)
(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
ALIGNMENT
2. REMARKS
+ Adjust
Riz.
so
that the
pointer
of
meter
stays
as shown
in figure right.
RF-2900LBS
RF-2900LBS
TUNING
65 4
5s
2205
—
€
BATTERY
&
Pointer
r BFO adjustment,
SIGNAL GENERATOR or
BAND
| SWEEP GENERATOR
RADIO DIAL
INDICATOR
ADJUSTMENT
REMARKS
CONNECTIONS
|FREQUENCY
SETTING
(VTVM or SCOPE)
AM-IF ALIGNMENT
Fashion loop of
|
several turns of
455 kHz
Point of non-
Output meter
Ti01(AM 1st IFT)
Adjust for maximum
AM
wire and radiate
| 30% Mod. | interference.
across voice coil. | T102(AM 2nd IFT)
output
signal into loop
at 400 Hz
T104(AM 3rd IFT)
of receiver.
LW-RF ALIGNMENT
Fashion loop of
he
Adjust for maximum
several turns of
150 kHz
Output meter
Li1e(LW OSC Coil)
output. Adjust Lio2 by
LW
wire and radiate | 150 kHz
(Refer to fig. 23) | across voice coil
(* 1)L102(LW ANT
moving coil bobbin
signal into loop
Coil)
along ferrite core.
of receiver.
\
_|
i
CTi12(LW OSC
| Adjust for maximum
LW
"
400 kHz
400 kHz
u"
Trimmer) | output.
(Refer to fig. 24)
CTi01(LW ANT
Repeat steps (2)
a
Trimmer)
| and (3).
MW-RF ALIGNMENT
oa
Fou geee:
7
Adjust for maximum
MW
a"
550 kHz
550 kHz
Output meter
Lii7(MW OSC Coil
output. Adjust Lio2 by
(Refer to fig. 25) | across voice coil
(* 1)L102(MW
moving coil bobbin
|
|
L
ANT Coil)
along ferrite core.
CTi11(MW OSC
Adjust for maximum
1500 kHz
y
Trimmer)
| output.
MW
n"
1500 kHz
(Refer to fig. 26)
CT102(MW ANT
Repeat steps (4)
Trimmer)
| and (5).
Connect to EXT
ant. terminal
Lioe(2nd OSC Coil)
SW1
through ceramic
| 2 MHz
Point of non-
"
Ti0s(SW 1st IFT)
Adjust for maximum
capacitor (10 PF).
interference.
T1o6(SW 1st IFT)
output.
Negative side
| to earth
SW1-RF ALIGNMENT
SW;
Connect to EXT
3.5 MHz
3.5 MHz
Output meter
Lits(SW1 OSC Coil) | Adjust for maximum
ANT terminal.
| (Refer to fig. 27) | across voice coil. [Lr10(SW1 ANT Coil) |
output.
CT110(SW1 OSC
Adjust for maximum
SWi
u"
8.0 MHz
77
Trimmer)
| output.
8.0 MHz
(Refer to fig. 28)
CT107(SW1 ANT
Repeat steps (7)
L
Trimmer) | and (8).
SW2-RF
ALIGNMENT
SW2
a
8.0 MHz
8.0 MHz
"
Liis(SW2 OSC coil) | Adjust for maximum
|
7
(Refer to fig. 29)
| Lio9(SW2 ANT Coil) | output.
=f
C
CT109(SW2 OSC
Adjust for maximum
SW2
16 MHz
Trimmer)
| output.
u
16 MHz
(Refer to fig. 28)
y
CT106(SW2 ANT
Repeat steps (9)
Trimmer)
| and (10).
SW3-RF ALIGNMENT
MD. AGC
ALIGNMENT
SIGNAL GENERATOR
REMARKS
ADJUSTMENT
(VTVM) across
voice coil.
MFM
ALIGNMENT
Rotate semi-fixed VR
becomes
—1.5 dB.
301 gradually until output
and then gradually
the first position where
(5) Finally, switch the si
and confirm that the
(120 mV/8q).
M BFO ALIGNMENT
SIGNAL GENERATOR or
SWEEP GENERATOR
RADIO DIAL
SETTING
pe
__|
(*2) Three output responses will be present; proper tuning
is the center frequency.
INDICATOR
(VTVM or SCOPE)
ADJUSTMENT
REMARKS
BFO
Set band width switch to "Narrow".
~
Fashion loop of
several turns of
wire and radiate
signal into loop of
receiver.
Tune to
signal.
Audio output from
speaker.
L119 (BFO OSC Coil)
—-
1.
Cut off modula-
tion after tune to
signal.
. Set BFO
switch to ON.
. Adjust for zero
beat.
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