Wulfsberg Electronics & Collins Radio:Research Note — Second Edition Paul Wulfsberg • P.G. Wulfsberg at Collins Radio, Cedar Rapids (IEEE, 1963) • Paul Wulfsberg at King Radio (NASA, 1970) • Arthur F. Wulfsberg at Collins Radio (Apollo) • K.N. Wulfsberg…
Collins Radio Avionics —Historical Introduction Dates & Archive Resources Collins • 618M • 860E-1 (1961) • 51R-7A • VIR-30 • DME-40 • 51RV • ARINC 410 • Pro Line I / II / 4 / 21 / Fusion • EFIS-85/86…
Collins KWM-2 / KWM-2ARestoration Deep-Dive Arthur Collins’ Masterpiece • 1959–1977 • The Compact S-Line That Went to War Of all the rigs to emerge from Cedar Rapids, Iowa during the golden age of amateur radio engineering, the Collins KWM-2 occupies…
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Alpha 8410 Linear Amplifier:Restoration & Service Guide 4CX1500B Bayonet Tetrodes • Manual Tune • Swamped-Grid Input • EBS • PIC Microcontroller • Dual Input Match Relay • Cabinet & Safety 📝 VK6ADA Technical Papers 📅 March 2026 ⚡ 1,500 W —…
Emtron DX-1A Linear Amplifier:Restoration & Service Guide GU74B (4CX800A) Tetrode • AMPC Control Board • TRIAC Soft-Start • EBS Jumper • Optional Jennings QSK • Emona Electronics Sydney • Cabinet & Safety 📝 VK6ADA Technical Papers 📅 March 2026 ⚡…
Emtron DX-1D Linear Amplifier:Restoration & Service Guide GU74B (4CX800A) Tetrode • RF Sub-Chassis & 9-Way Connector • Dedicated Display Board • SWR Protection • AMPC Control Board • TRIAC Soft-Start • TDA1085C • Dual Tank Coils • Emona Electronics Sydney…
Emtron DX-1SP Linear Amplifier:Restoration & Service Guide FU-728F (4CX1500B-class) Tetrode • 1,200 W CW / 1,500 W PEP • 8× 470 μF/500 V HV Bank • 40 A TRIAC Soft-Start • Dual-Polarity Screen Protection • Eimac 4CX1500B Compatible • OCC • FCC Approved 📝 VK6ADA…