Heathkit HW-100 - Page 108

Board Part # Used In Comments
Modulator 85-127P221 SB-100, SB-101
85-127-1 SB-101
85-127-2 HW-100, HW-101
85-127-3 SB-102
IF 85-128P222 SB-100
85-128P376 SB-101
85-128-2 SB-101, SB-102
85-128-3 HW-100
85-128-4
HW-101
R104 and R105 are 47, R106 is 22k, R110 is unused,
Meter zero pot is 10K and mounted externally
85-128-5
SB-102
R106 changed to 33k, R110 changed to 510
Bandpass 85-129P223 SB-100
85-129-2 SB-101
85-129-3 HW-100
85-129-4 SB-102
85-129-5
85-129-6 HW-101 Board is not screened for aux oscillator components
Audio 85-130P224 SB-100, SB-101
85-130-1 SB-101
85-130-2 HW-100
85-130-3 SB-102
85-130-4 HW-101 Board is not screened for sidetone volume control
RF Driver 85-131P225 SB-100
85-131-2 SB-101
85-131-3 HW-100
85-131-4 SB-102
85-131-5 SB-102
85-131-6 HW-101
Crystal 85-132P226 SB-100
85-132-1 HW-101, SB-101, SB-102
Heterodyne
Oscillator
SB-100
85-133-1 HW-101, SB-101, SB-102
Driver Grid SB-100
85-133-2 HW-101, SB-101, SB-102
Driver Plate 85-131P229 SB-100
85-133-3 HW-101, SB-101, SB-102
Table 11. Printed Circuit Board Part Numbers and Usage
Printed Circuit Boards (PCBs) Page 108