Galaxy
DX Radios DX77HML
Documentation Project
CBTricks.com
|
Dis |
Function |
Part # |
|
|
LOC
|
B |
C |
E |
|
TR1 |
NB Amp |
2SC1675L |
NPN |
 |
B-3
|
1.90�NB On |
8.00� NB On |
1.10 NB On |
|
TR2 |
NB Amp |
2SC1675L |
NPN |
|
C-2
|
0.70�NB On |
2.60� NB On |
0.00�NB On |
|
TR3 |
NB Amp |
2SC945P |
NPN |
|
C-3
|
2.60�NB On |
8.00� NB On |
1.80�NB On |
|
TR4 |
NB AGC |
2SC945P |
NPN |
|
B-2
|
0.00�NB On |
8.30� NB On |
1.12�NB On |
|
TR5 |
NB Pulse Amp |
2SC945P |
NPN |
|
C-3
|
0.00�NB On |
7.70� NB On |
0.00�NB On |
|
TR6 |
NB Pulse Amp |
2SA733P |
PNP |
|
C-2
|
7.70�NB On |
0.00� NB On |
8.30�NB On |
|
TR7 |
NB Shunt Switch |
2SC945P |
NPN |
|
C-2
|
0.00�NB On |
0.00� NB On |
0.00�NB On |
|
TR8 |
2nd RX Mixer |
2SC1674L |
NPN |
|
D-2
|
0.70 |
7.40 AM / FM |
0.20�AM / FM |
|
TR9 |
AM/FM IF Amp |
2SC1675L |
NPN |
|
D-3
|
0.70�AM / FM |
3.20�AM / FM |
0.00 |
|
TR10 |
AM/FM IF Amp |
2SC1675L |
NPN |
|
D-4
|
3.20�AM /FM |
7.40 AM / FM |
2.40�AM / FM |
|
TR11 |
AM/FM IF Amp |
2SC1675L |
NPN |
|
D-4
|
2.40�AM / FM |
7.20�AM / FM |
1.70�AM / FM |
|
TR12 |
SSB Sw. & AGC |
2SC945P |
NPN |
|
B-4
|
0.70�SSB |
0.00 SSB |
0.00 |
|
TR13 |
AM/FM S-Met. |
2SC945P |
NPN |
|
B-4
|
0.70�AM / FM |
0.00�AM / FM |
0.00�AM / FM |
|
TR14 |
SSB/CW S-Met. |
2SC945P |
NPN |
|
B-4
|
0.70�SSB / CW |
0.00�SSB / CW |
0.00�SSB / CW |
|
TR15 |
SSB Det. |
2SC945P |
NPN |
|
E-4
|
1.30 |
5.40 |
0.70 |
|
TR16 |
Squelch Switch |
2SC945P |
NPN |
|
E-5
|
0.80�TX & SQ |
0.00 |
0.00 |
|
TR17 |
RFX RF Amp |
2SC1674L |
NPN |
|
B-2
|
2.20 |
8.00 |
1.50 |
|
TR18 |
1st. RX Mixer |
J310 |
FET |
 |
C-2
|
(S) 1.90 |
(D) 8.36 |
(G)� 0.00 |
|
TR19 |
1st SSB IF Amp |
2SC1674L |
NPN |
|
D-3
|
1.6 SSB / CW |
6.60 SSB / CW |
0.80�SSB / CW |
|
TR20 |
2nd SSB IF Amp |
2SC1675L |
NPN |
|
D-4
|
0.70 SSB / CW |
3.60�SSB / CW |
0.00 |
|
TR21 |
3rd SSB IF Amp |
2SC1675L |
NPN |
|
D-4
|
3.60�SSB / CW |
6.10 SSB / CW |
2.90�SSB / CW |
|
TR22 |
4th SSB IF Amp |
2SA1906 |
PNP |
|
D-4
|
0.00 |
2.90 SSB / CW |
7.40�SSB / CW |
|
TR23 |
AM Det. Switch |
2SC945P |
NPN |
|
D-4
|
0.70�AM |
0.00 |
0.00 |
|
TR24 |
PLL Ref. Osc. |
2SC1675L |
NPN |
|
D-2
|
2.50 |
6.40 |
1.80 |
|
TR25 |
VCO |
2SC1675L |
NPN |
|
D-1
|
2.10 |
7.30 |
1.40 |
|
TR26 |
VCO Buffer |
2SC1675L |
NPN |
|
D-1
|
0.60 |
3.80 |
0.00 |
|
TR30 |
Carrier Osc. |
2SC1675L |
NPN |
|
C-5
|
3.00�SSB / CW |
6.40�SSB / CW |
2.40�SSB / CW |
|
TR31 |
SSB Switch |
2SC945P |
NPN |
|
D-4
|
0.70�AM / FM |
3.00�SSB
/ CW |
0.00 |
|
TR32 |
AMC Shunt |
2SC945P |
NPN |
|
E-6
|
0.70�RX |
0.00 |
0.00 |
|
TR33 |
Roger Beep Osc. |
2SC945P |
NPN |
|
F-1
|
0.55�TX |
0.60�TX |
0.00 |
|
TR34 |
AMC/ALC Amp |
2SA733P |
PNP |
|
B-3
|
7.80�TX |
0.60�TX |
8.30�TX |
|
TR36 |
RX Voltage Sw. |
2SA1282 |
PNP |
|
F-6
|
7.80 |
8.52�RX |
8.55 |
|
TR37 |
RX Voltage Sw. |
2SC945P |
NPN |
|
E-6
|
0.00�TX�
|
0.10�RX�
|
0.00 |
|
TR38 |
TX Voltage Sw. |
2SA1282 |
PNP |
|
F-6
|
8.03�RX�
|
0.00�RX�
|
8.55 |
|
TR39 |
CW Switch |
RN1003 |
NPN |
|
C-5
|
(IN) 0.70�CW |
(OUT)
0.00�CW� |
(GND) 0.00 |
|
TR40 |
Voltage Reg. |
2SC945 |
NPN |
|
C-6
|
1.60 |
12.66�RX�
|
1.08 |
|
TR41 |
Voltage Reg. |
2SA473 |
PNP |
 |
D-6
|
12.56�SSB
/ CW� |
8.53 |
13.27�RX�
|
|
TR42 |
AF Amp |
2SC945P |
NPN |
|
C-6
|
1.33 |
2.08 |
0.74 |
|
TR43 |
RF Final Amp |
2SC2312 |
NPN |
|
A-2
|
0.70
SSB / CW TX� |
6.64�AM
/ FM / CW TX |
0.00 |
|
TR44 |
RF Driver |
2SC2166C |
NPN |
|
A-1
|
0.80
SSB / CW TX� |
6.64�AM
/ FM / CW TX� |
0.00 |
|
TR45 |
RF Predriver |
2SC1973 |
NPN |
|
B-1
|
1.40�TX |
8.10�SSB
/ CW TX� |
0.80 |
|
TR46 |
RF Amp & Buffer |
2SC1906 |
NPN |
|
B-1
|
1.40�TX |
6.10�TX |
0.70� TX |
|
TR47 |
ALC Sense Amp |
2SC1675L |
NPN |
|
B-3
|
0.00 |
7.70 |
0.50�SSB
/ CW TX� |
|
TR49 |
AM Mod. Amp |
2SC945 |
NPN |
|
B-6
|
6.10�AM
/ FM / CW TX� |
13.20�SSB
TX� |
5.60�AM
/ FM / CW TX� |
|
TR50 |
AM Mod. Amp |
2SA473 |
PNP |
|
B-6
|
12.10�AM
/ FM TX� |
5.60�AM
/ FM / CW TX� |
12.50�AM
/ FM TX� |
|
TR51 |
AM Mod. Amp |
2SB754Y |
PNP |
|
B-6
|
12.50�AM
/ FM TX� |
5.60�AM
/ FM / CW TX� |
13.00�AM
/ FM TX� |
|
TR52 |
SSB Switch |
2SD471K |
NPN |
|
A-6
|
0.00�AM
/ FM / CW� |
5.60�AM
/ FM / CW� |
0.00�AM
/ FM / CW |
|
TR53 |
AMC Amp |
2SC945 |
NPN |
|
B-4
|
0.90 |
7.70 |
1.70�AM
/ FM / CW� |
|
TR56 |
RF Final Amp |
2SC2312 |
NPN |
|
A-2
|
0.70
SSB / CW TX� |
6.64
AM / FM / CW TX� |
0.00 |
Disclaimer: Although the greatest care has been taken while compiling these documents,
we cannot guarantee that the instructions will work on every radio presented.