ac.9. SB-100 CW Filter Modification
As pointer out by Mike (W5RKL), the SB-100 can be modified to incorporate the
CW/SSB filter switching mechanism that was added to the SB-101 and SB-102
transceivers. While the SB-100 originally used a larger sized filter than the later
transceivers
To do this, it is necessary to secure the following items (perhaps from a SB-101 or SB-
102 parts chassis (filters and filter mounting bracket not shown in the figure):
SSB and CW filters (must be the smaller form-factor filters)
Filter mounting bracket
RF Gain Control (with lever mechanism to operate the filter switch)
Switch mounting bracket with two slide switches
SSB/CW Filter lever knob and bushing to adapt the new, smaller shaft to the RF
Gain knob
Modifications Page 98