I made this point earlier. If you are tuning for minimum reverse power
you actually don't have to do any computation. Just output the reading
from the adc, be it an adafruit ads1015 or an AD8307. If the reading is
going down then so is the reverse power. Minimum load on the nano.
tim ab0wr
On Sun, 06 May 2018 17:26:55 -0700
"Kees T" <windy10605@...> wrote:
So what would be the minimum compute requirement on an existing
Nano ? Maybe read 2 analog inputs directly from 2 AD8307s? with only
a scaling factor for Stockton Bridge coupler loss. Multiply that by
1dBm per 25mV (linear spec for the AD8307) and you have the Forward
and Reflected power in dBm into a 50 ohm load.? Look up the "power"
in Watts or tape a small chart on the bottom of the uBITX.
73 Kees K5BCQ
