Hello again, This might be of interest: I found a Taylor Modulation 5 Watt 80-40 Meter transmitter article in CQ, August, 1961, pages 56, 57, 114. "A Modulator Powered Hybrid Transmitter" by Niel Iversen, W7PVF Looks simple and straightforward. Henry, OZ03 (just acquired) & N2NR