Receiver Alignment; Ssb; Receiver Adjustments - Realistic TRC-457 Owner's Manual

maximum RF.
33.855MHz +20Hz.
!.00 v o l t s .
I
laximum RF.
I
.765MHz.
annels ,
h a r t f o r
uencies)
.
7 6 75MHz.
mnels.
i a r t f o r
A
lencies)
.
.7625MHz.
:quencies.
Lart f o r
~ e n c i e s )
.
O M H z
.
nnels.
a r t f o r
encies)
.
RECEIVER ALIGNMENT
Connect an A C VWhI o r A F w a t t m e t e r a c r o s s s p e a k e r v o i c e c o i l .
Adjust volume c o n t r o l t o o b t a i n a s u i t a b l e i n d i c a t i o n .
S e t g e n e r a t o r o u t p u t low enough t o p r e v e n t A G C l i m i t i n g .
RF GAIN Maximum, CLARIFIER 0, Squelch MINIMUM, N B O f f , A N L Off.
1
TEST EQUIPMENT
(
TRANSCEIVER
I
ADJUST
I
REMARKS
1
- -
Output o f s i g n a l g e n e r a t o r t h r u
.OluF t o TP13 (FET1, G1)
7.8MHz, lOOOHz
@
30% modulation.
Output o f s i g n a l g e n e r a t o r t h r u
.OluF t o antenna jack.
27.185MHz, lOOOHz
@
30% modulation
I n j e c t a lOOpps, luSec s i g n a l a t
MIC i n p u t .
Input o f o s c i l l o s o p e t o TP5.
Ch. 19, AM
Ch. 19,
AM
NB On
A d j u s t f o r maximum o u t p u t .
A d j u s t f o r maximum o u t p u t .
I f n e c e s s a r y r e a d j u s t L5,
L6, L7, and L8.
A d j u s t f o r maximum.
RECEIVER ALIGNMENT
Connect an A C VTVEl o r AF w a t t m e t e r a c r o s s s p e a k e r v o i c e c o i l .
Adjust volume c o n t r o l t o o b t a i n a s u i t a b l e i n d i c a t i o n .
R F GAIN Maximum, C l a r i f i e r 0, Squelch MINIMUM, A N L Off, NB Off, Volume Maximum.
I
I
SSB
TEST EQUIPMENT
Output o f s i g n a l g e n e r a t o r t h r u
.OluF t o a n t e n n a jack.
27.186MHz n o modulation.
Output .25uV.
TRANSCEIVER ADJUST REMARKS
Ch. 19, USB CT1
RECEIVER ADJUSTMENTS
Connect an A C V T V M o r AF w a t t m e t e r a c r o s s s p e a k e r v o i c e c o i l .
Adjust volume c o n t r o l t o o b t a i n a s u i t a b l e i n d i c a t i o n .
R F GAIN Maximum, C l a r i f i e r 0, Squelch MINIMUM, NB O f f , A N L Off.
TEST EQUIPMENT
1
TRANSCEIVER
1
ADJUST
1
REMARKS
Output o f s i g n a l g e n e r a t o r t h r u
.
OluF t o a n t e n n a j a c k .
27.185MHz, lOOOHz
@
30%
modulation.
Output .5uV.
Output of s i g n a l g e n e r a t o r t h r u
.OluF t o antenna jack.
27.185MHz, lOOOHz
@
30% modulation
Output 50uV.
Output of s i g n a l g e n e r a t o r t h r u
.OluF t o antenna jack.
27.185MIIz, lOOOHz
@
30% modulation
Output 1000uV.
Ch. 19,
AM
V O L U M E Maximum
Ch. 19, AM
R F GAIN MINIMUM
SQUELCH Maximum
I
Ch. 1 9 , AM
Squelch Maximum
Output 100uV.
Output of s i g n a l g e n e r a t o r t h r u
,OluF t o antenna jack.
27.185MHz, lOOOHz
@
30% modulation.
AM R X GAIN
A d j u s t f o r 2 v o l t s audio.
Ch. 19, AM
SQUELCH RANGE
A d j u s t s o t h a t s q u e l c h
j u s t b r e a k s .
SIGNAL METER
A d j u s t f o r 9 on SIGNAL
s c a l e o f meter.