AT SPert1200 is designed to cooperate mainly with SPert1200 amplifier. Its task is to ensure proper impedance (as close as possible to 50 ohm) between the amplifier and the antenna. Most of multi-band, compromise antennas do not provide 50 ohm impedance across the entire width of individual sub-bands, which results in inability to work with transistor amplifier or necessity of significant reduction of output power.

Maximum limiting of reflected power between amplifier's output and the antenna has positive influence on its proper work, causes much lower heating of the transistor than in the case of work with poorly matched antenna, enables full power operation in the whole width of amateur bands.
The AT SPert1200 additionally has an antenna switch for 3 antennas, controlled from the front panel by a manual switch.

• Antenna tuner AT SPert1200
• Power supply 12V 1A
• Control cable between PA and AT (2x D-sub 9 pin male/female) with or without output to ICOM, adapted to the transceiver model agreed before purchase.
• User Manual