Press the [IPO] button repeatedly, to set the desired characteristic of the receiver front end, according to the chart below.     AMP1: Amplifies the incoming signals, using a low distortion RF preamplifier (gain: approx. 10 dB).     AMP2: Amplifies the incoming signals, using a 2-stage low-distortion RF preamplifier (total gain: approx. 20 dB).     IPO: Bypasses the RF preamplifier, yielding direct feed to the first mixer. The selected receiver RF preamplifier will be indicated in the IPO column of the Key Function Display on the TFT display. ADVICE: On the 10 MHz and lower bands, it is generally not necessary to use any preamplifier at all; selecting the "IPO" position as described above will increase the strong-signal-handling capability of the receiver, and generally will result in more pleasant reception due to reduced noise. If you can hear band noise with the preamplifiers disengaged, then a preamplifier is generally not needed.

End of "IPO-Intercept Point Optimization"