I'm still looking for an answer to the original post, but I tuned it up as-is and ended up with the following result (5 MHz split):
insertion loss = 0.5 dB (RX and TX) RX isolation @ TX freq = 93 dB TX noise suppression @ RX freq = 55 dB Something doesn't seem right about that 55 dB figure, especially with > 90 dB RX isolation. Seeking input and/or original specifications (there are none in the manual).
