Paul,
I'm sure I responded to your post, but don't see it here, so am responding again.
The Si5351A output is adequate to drive the 2-NT to full output on all bands. When operating straight through, the 2-NT oscillator stage only requires 1V RMS to drive it. So on 20 and 15 meters I drive it with 14 or 21 MHz input and the 3.3V square wave is adequate. On 10M both the oscillator and driver operate as? doublers with a 7 MHz XTAL, but with 14 MHz input, the? oscillator operates straight through and 3.3V P-P is enough drive for full output.
After seeing your VFO post here, I took a quick look at your QRZ page. Most impressive. I think most of us wished our home brew projects looked this good!
73
Paul, N9PL
