VK6ADA · Boatanchor Legends Series Bill Orr W6SAI Engineer · Educator · Author · Amateur Radio Legend 1919 – 2001 | W2HCE / W6SAI | DXCC Honor Roll | OSCAR-1 Pioneer 📝 Mike Peace VK6ADA 🌐 r-390a.net Administrator 📅 Published…
VK6ADA Mike Peace · Vintage Collins Radio · r-390a.net Home › Collins 30L-1 Amplifier › Serial Number Guide Collins 30L-1 — Serial Number & Production Guide VK6ADA Technical Reference · Collins S-Line Vintage Amateur Equipment · March 2026 · Mike…
Collins 51S-1 / 1A / 1F / 1AF / 1B — AM, CW & SSB Receiver A comprehensive engineering analysis of RFI mitigation strategies, ferrite core selection, noise reduction techniques, and signal-to-noise ratio improvements for the Collins 51S-1 series receivers.…
Technical Whitepaper · VK6ADA · r-390a.net Rebuilding & Upgrading the Collins S-Line70K-2 Permeability-Tuned Oscillator (PTO) Modern Component Substitution · RFI Mitigation · Ferrite Core Techniques · Signal-to-Noise Improvement 75S-1 75S-2 75S-3 75S-3B 75S-3C/m 32S-1 32S-2 32S-3 KWM-2 KWM-2A AUTHOR Mike…
Enhancing the Collins 180S-1 Antenna Tuner: Complementary Balun Designs Products for Modern HF Operation Technical White Paper — Collins S-Line Restoration & Integration Series 📝 VK6ADA Technical Papers 📅 March 2026 🔌 HF Antenna Systems ⚡ 1 kW Class Abstract.…
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…
Single-Band Loss: Symptom Analysis, Root Cause Diagnosis & Troubleshooting Collins Radio · Technical Reference Series Collins 32S-3 Transmitter Single-Band Loss: Symptom Analysis, Root Cause Diagnosis & Troubleshooting 80 METRES VFO INJECTION 1ST MIXER BAND SWITCH Reported Case Summary All three…
Antenna Engineering Guide · Collins S-Line · Balun Designs Multiband HF Loop Antennas with the Collins 180S-1 Tuner, Balun Designs Model 4114 and Model 1115d Impedance Transformation, Common-Mode Suppression & Practical Installation for 160–10 Metre Operation by Mike Peace VK6ADA…
Collins KWM-2A Transceiver RFI Mitigation & Receiver Noise Reduction Ferrite Cores, Inductors, Filtering & Grounding Modifications for the Modern Noise Environment Mike Peace VK6ADA • r-390a.net Administrator 1. Executive Summary The Collins KWM-2A is a double-conversion SSB/CW transceiver covering 3.4–30.0 MHz,…