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4.7 Two Possible Sets of Antennas (Bank A or Bank B)
The Expert 1.5K-FA amplifier is equipped with two different memory banks, "Bank A" and
"Bank B".
If you have two different QTH’s, then they would certainly have two different antenna
setups.
Therefore it would be useful to automatically recall data from one setup to the other with
no need to adjust the configuration and the subsequent ATU matching every time.
This feature is also particularly useful if you participate in a DXpedition.
If one of the memory banks is set as your home station, upon returning, just recall the
appropriate memory bank.
For setting, see chapter 11.1 "Initial Programming", refer to the “CONFIG” item on the
main menu.
4.8 Predistortion
On the rear panel there is an SMA connector where the transmitted signal is attenuated by
60 dB (50 ohms).
This signal can be used to connect an SDR transceiver with appropriate software in order
to improve the IMD of the transmitted signal by 25 dBc or higher (depending on the
software).
This result was obtained with an SDR transceiver currently available on the market.
An exceptional IMD of - 66dB has been obtained since in the EIA standard the amplitude
of the distortion products is referenced to the peak envelope power, which is 6 dB higher in
power than the represented by one of the two tones.
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