PROJECTS TO BUILD
Among these pages are construction projects for the homebrewer. While LF oriented, some should be useful for other aspects of the radio hobby as well. Also listed here is some equipment that I've overhauled or rebuilt.
BCB Band Reject Filter Re-manufactured SP-600 receiver
KO6BB Multicoupler #1 PDF File Roelof's LM-380 Audio Amplifier
KO6BB Multicoupler #2 Roelof's Pitch Shifter
BCB Reject Low Pass Filters Tunable Low Frequency Preamplifier
Mitch Lee LF Receiver Premium LF/HF Preamplifier
Poor Boy's Crystal Filter Parts and Components