From the Daily DX: W4EA, aka W4ETO, (ex WA4NGO, K6CTV, W0FID, W9AOA), Richard W. Ehrhorn, is now a Silent Key. Dick stated ETO and Alpha HA amplifiers in 1970. You can see Dick's bio at <https://www.qrz.com/db/W4EA> 73, Victor, 4X6GP Rehovot, Israel CWops #5 Formerly K2VCO https://www.qsl.net/k2vco/