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…
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 312B-3 Speaker Cabinet Bluetooth Speaker Conversion Dual-Mode DC / Li-Ion Battery Power · Bluetooth 5.0 aptX HD · Dayton Audio KAB-250v4 + LBB-5Sv2 · Ferrite RFI Suppression Mike Peace VK6ADA · r-390a.net Administrator · March 2026 1. Project Overview…
Collins 516F-2 Speaker Cabinet Bluetooth Speaker Conversion Dual-Mode AC / Li-Ion Battery Power · Bluetooth 5.0 aptX HD · Dayton Audio KAB-250v4 + LBB-5Sv2 · Ferrite RFI Suppression Mike Peace VK6ADA · r-390a.net Administrator · March 2026 1. Project Overview…
Collins MP-1 Power SupplyComplete Restoration Kit For the S-Line · KWM-2 · KWM-2A | Includes RFI Mitigation Ferrite Package 47 Components 100% USA Sourcing Ships from Missouri 6Kit Sections 47Components 6US Vendors 4Ferrite Types The Collins MP-1 mobile power supply…
Engineering Reference Document Collins 516F-2 Power Supply RFI Analysis & Mitigation Engineering Guide Noise Floor Reduction Strategies for Collins S-Line, KWM-2, and KWM-2A HF Station Installations Prepared by Mike Peace VK6ADA | r-390a.net Administrator | Document Revision 2.0 — February…
Vintage Hammarlund · Restoration Guide Hammarlund SP-600 JX-16 Complete Restoration, Alignment & RFI Mitigation Guide Mike Peace VK6ADA · r-390a.net Administrator Parameter Specification Frequency Coverage 0.54 – 54 MHz in 6 bands Conversion Double conversion (above 7 MHz); single below…
Mission RGO ONE · Technical Guide RGO ONE HF Transceiver RFI Mitigation, Receiver Noise Reduction & Signal-to-Noise Ratio Improvement Guide Mike Peace VK6ADA · r-390a.net Administrator Field Detail Author Mike Peace, VK6ADA Website vk6ada.com.au Resource r-390a.net Transceiver Mission RGO ONE…
Boatanchor Legends — A Tribute Series Matt Parkinson is one of the credited contributors to “The 21st Century R-390A/URR Technical Reference” — the Y2K Manual — the document that transformed the R-390A from an equipment type served by scattered, aging…