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C148GTL DX ALIGNMENT PROCEDURE
STEP
PRESET ТО
ADJUSIMENT
REMARKS
7
Same as Step 3.
VR12
Adjust for 24.5V reading on RF VTVM.
8
Same as Step 1.
VR 7
Adjust for Min. reading on Spectrum
Analyzer for both USB and LSB.
9
Same as Step 1,
except:
Mode
:AM
VR13
Adjust for 5.0W reading on RF Power
Meter.
10
Same as Step 9.
VR 8
Set the meter SW to S.RF position.
Adjust the VR 8, so that the radio's
meter reads 5W (Between Green zone and
Red zone).
11
Same as Step 9,
except Mic input
30mV.
VR14
Adjust 90% modulation on Oscilloscope
12
Same as Step 1,
except:
Mode SW: Ш
Band
: 40
Mic input 30mV
VR 5
Adjust for 5kHz déviation.
13
Same as Step 12,
except:
Mode
: CW
VR15
Adjust 0.2V reading on AF VTVM
when CW key is keyed.
14
Same as Step 1,
except:
CH9 SW : CH9
Check that the output frequency is
27.065MHz.
Summary of Contents for 148GTL-DX
Page 32: ...со SO AOJ VR2 BLOCK DI AGRAM ...
Page 33: ...SCHEMATIC DIAGRAM ...
Page 41: ...Parts Layout Top View Î37 2SB525C 1 4 1 5 ...
Page 42: ...PARTS LAYOUT Top View ...
Page 43: ...ADDED PARTS MAIN PCB Bottom View PC 879AB ...
Page 44: ...COPPER PATTERN SWR PCB CH SW PCB LED PCB CD ...
Page 48: ...го w INTERNAL DIAGRAM IC s MB87I9 ...
Page 49: ...INTERNAL DIAGRAM IC s го А ...
Page 50: ...INTERNAL DIAGRAM IC s S 0 4 2 P 25 ...
Page 58: ...со го BLOCK DI AGRAM ...
Page 59: ...PB OIO SCHEMATIC DIAGRAM ...
Page 60: ...WiRING DIAGRAM 3 5 3 6 P C 881 P C 8 8 0 ...
Page 66: ...COPPER PATTERN MAIN PCB ...
Page 68: ...P B O I O ADDED PARTS MAIN PCB H fs il 8 46 ...
Page 70: ...COPPER PATTERN SUB ASSY PCB s ...
Page 71: ...PARTS LAYOUT MIC JACK 49 ...
Page 74: ...INTERNAL DIAGRAM IC s MC14008B 1 4 Cou l 13 S 4 13 S 3 11 S2 10 S 1 16 15 14 13 12 11 10 9 52 ...
Page 75: ...сл С О INTERNAL DIAGRAM IC s OSC out Г 2 out FS PO PI P2 P3 PA P5 P6 P7 P8 MC145106 ...
Page 76: ...INTERNAL DIAGRAM IC s 14 0UT4 13 I N 4 12 lN 4 11 VEE 10 IN 3 9 I N 3 8 0UT3 TA75902P 54 ...