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ALIGNENT OF PLL AND CARRIER OSCILLATOR SECTION.
1. Test Equipment Required:
a) Oscilloscope
b) DC Voltmeter
c) Frequency Counter
2. Alignment Procedure.
STEP
PRESET ТО
1
CH
RX Mode
Mode AM
Voice Lock:
Center
Band:
2
Same as above,
except:
CH
3
Same as Step 1
4
Same as Step 1
5
Same as Step 1
CH
Mode
6
Same as Step 1
CH
Mode
7
Same as Step 6,
CH
TX Mode
8
Same as Step 1
CH
Band
Note:
Two TP4 are noted on procedure.
C148GTL DX ALIGNMENT PROCEDURE
ADJUSTMENT
:19
LI 4
MID
L15
: 40
L16
L31
L32
: 40
: USB
L33
: 40
: LSB
VR6
: 40
L22
: 40
: Lew
Effectivity:
EARLY
VERSION
Connect Oscilloscope to TP4 (lead of R83).
Adjust for maximum indication on Oscillo
scope.
Connect DC Voltmeter to TP2 (lead of R93).
Adjust for 5.4V reading on DC Voltmeter.
Connect Oscilloscope to TP3 (lead of
R101). Adjust for maximum indication on
Oscilloscope.
Connect Frequency Counter to TP3 (lead of
R101). Adjust for 16.490MHz + or - 20Hz.
Adjust for 16.4925MHz + or - 20Hz.
Adjust for 16.4875MHz + or - 20Hz.
Adjust for 16.4875MHz + or - 20Hz.
Adjust for 16.040MHz + or - 20Hz.
One is R83 and the other one is R114.
S/N 03000001-4498
S/N 13000001-1504
REMARKS
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