![]() Various protection mechanisms, including: antenna overvoltage, antenna overcurrent, excessive power during operation and tuning, extreme temperatures and power supply voltages, as well as relay hot-switching. Indication and editing of names and types of antennas in editable freeform. The last used antenna selection is memorized. Integrated four-way antenna switch - less coaxial cable, shorter unmatched sections, less losses.Īntennas can be automatically and manually switched from the amplifier front panel. Improves harmonic suppression - the matching network is a low-pass L filter.ĪCOM 04AT can be located up to 100 m (330 ft) away from the shack.Īllows remote installation, including outdoors, close to the antenna feed point, minimizing losses. Receiving performance) and to avoid any unwanted widening of the spectrum of signals, emitted during the tuning cycle.Īir-core coils and high-quality ceramic capacitorsĪir-core coils (no magnetic materials) and high-quality NP0 (C0G) ceramic capacitors usage throughout the matching circuit. Relay switching will only take place when no RF current is flowing, preventing contact arcing critical for preventing contact oxidation, surface melting and material transfer (otherwise resulting in poor ![]() Relays with gold-plated contacts for excellent receive characteristics. Input SWR after completing a tuning cycle - below 1.5:1 (typically below 1.3:1). Input SWR after completing a tuning cycle Input SWR during full tuning cycles - below 2:1, preventing activation of transceiver PA protection. Less than 0.05 seconds with zero emitted signals. Power supply and control to the tuner, as well as status return from the tuner are facilitated over the coaxial cable between the amplifier and tuner, no need for additional cables or special control signalsįrom the transceiver (the availability of CAT control from the transceiver will give further advantages to the setup).įull tuning can be completed within 5 seconds (typically 2-3 seconds), at 25 W at the tuner input and less than 6 W at the antenna output quick tuning (from nonvolatile-memory presets) is completed in Information about the setting age, and alerts for settings that reach a certain age, defined by the operator in 4 possible age levels. The user presets are automatically loaded, following frequency and antenna selection changes.īackup of preset memory to a computer file, import of previously made backup files from a computer to the tuner memory. Non-volatile memory for user presets (auto tune), independent for the four antennas, the three types of segment width, and more than 1000 random fixed frequencies for each antenna. The operator can choose according to the nature of each of the four antennas: Narrow band - Sharp, Normal - Regular, and Broadband - Wide).Ĭapability of operation at fixed frequencies Three kinds of frequency segments, according to antenna bandwidth ![]() Solid state (transistor) amplifiers, e.g., ACOM 600S, 700S, 1200S or ACOM 2020S.įor a CAT transceiver a single press of the TUNE button on the amplifier front panel is all you need.Īfter setting up the user presets (auto tune) for the frequency segments and antennas, the operator will not be involved with tuner operation. ![]() The ACOM 04AT tuner is specifically designed and developed to work exclusively with the ACOM series of The tuner automatically selects one of four available antenna outputs (as assigned in bands by the operator) and matches the impedance of the chosen antenna output by transforming it to 50 Ohm with SWR below 1.5:1 at the tuner input (typically below 1.3), providing an optimum load impedance for the amplifier. ACOM 04AT is a remote automatic antenna tuner for HF + 6 m with integrated four-way antenna switch. ![]()
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