Close-In Spectrum Plots

Here are 10 kHz sweep plots with delta markers showing the LO feed-through and the image rejection. The amplitude and phase are uncorrected. What you see here is the raw performance of the RS-HFIQ. Fine tuning of the I and Q amplitude and phase can greatly reduce the image levels but won't have much effect on the LO feed through.

80M - 3.8 MHz 4.5 W: