On 3/11/2021 1:13 PM, K9MA wrote: > > FWIW, I recall that 75 Ohms minimizes loss, while 50 Ohms maximizes > power capacity. No doubt that was for a solid dielectric, and may be > > 73, > Scott K9MA > For air dielectric, 77 ohms minimizes loss. For solid PE dielectric, the lowest loss occurs very close to 50 ohms. 73 Rick N6RK