I do not have an oscilloscope, unfortunately
I am transmitting into a QRPLabs 20W dummy load.? It measures almost exactly 50 ohms with my DVM.
I had an old wattmeter/SWR meter that I was using to measure power.? It recently took a dive on me, and now I am using an old Fluke RF probe.? Both indicated the uBitX was putting out slightly less power than my stock FT817.? My RF probe is showing both at approx 3.6W, so I am sure it is out of calibration, but it should suffice for relative power measurements and at least get me in the neighborhood, I would think.
I am using my FT817 as a reference for these tools since I know it should put out slightly under 5W with a proper power supply.
