PHASE DELAY ACROSS CHANNELS
This plot overlays the phase delay at 5 and 10 MHz of each of the six channels in a unit built without the
bandpass filter. Channels 1 through 3 form a tight group with almost identical phase through the amplifier.
Channels 4 through 6 show slightly higher delay (about 0.75 degrees at 5 MHz; much less at 10 MHz. I am
not sure what causes this slight discrepancy; the good news is that the phase across all channels is consistent
to well within 1 degree.