Reader Question · from Rich, WA6KNW Driving a Collins KWM-2A or 75S-3B with an Electronic Specialty Products DDS VFO Q: “Does anyone have the manual for hooking up the Electronic Specialty Products DDS VFO (the N3ZI DDS-based unit) to a…
vk6ada.com.au • Vintage Receiver Fault Diagnosis Series • Collins S-Line Collins 75S-3 S-Line ReceiverAGC Collapse Fault Diagnosis — S-meter/Volume Interaction, AGC Bus Analysis, Root Cause Candidates A documented community failure mode in the Collins 75S-3 series. AGC collapse causes the…
VK6ADA · Mike Peace · Vintage Collins Radio · r-390a.net Home › Collins S-Line › Collins 75S-3 / 75S-3B / 75S-3C Serial Number Guide Collins 75S-3 / 75S-3B / 75S-3C — Serial Number & Production Guide VK6ADA Technical Reference · …
Engineering Design Study — Collins S-Line Series Collins 75S-3 ReceiverBFO Sideband Tolerance Reduction Design Options to Reduce USB / LSB Dial Offset — Component Changes, Circuit Modifications, and Modern Replacement Strategies Equipment: Collins 75S-3 / 75S-3B / 75S-3C Reference: KI-75S3-001…
Known Issue — Collins S-Line Series Collins 75S-3 ReceiverUSB / LSB BFO Dial Offset Tunable BFO “Zero” Position Differs Between Sidebands — Normal Tolerance Behaviour vs. Alignment Fault Equipment: Collins 75S-3 / 75S-3B / 75S-3C Issue ID: KI-75S3-001 Severity: Informational…