Acom 2020AT HF Automatic Antenna Tuner and Switch

Acom 2020AT HF Automatic Antenna Tuner and Switch voor de Acom 2020S

Operating Frequency Range

• Continuous from 1.8 to 30 and from 50 to 54 MHz;

Minimum Range of the Matched Impedances (at Each of the Four Antenna Outputs)

• All impedances with SWR from 1:1 to 3:1 towards 50 Ohm, any phase angle, unbalanced input and output;
• For some frequencies and impedances, matching is possible at SWR above 3:1 at the antenna output (up to 10:1), but the maximum allowed power is reduced;

Maximum Allowed Input Power (PEP, Mean or Continuous Carrier, Without Mode Limitation)

• At antenna SWR below 2.5: 1700 W;
• At antenna SWR between 2.5 and 3: 1500 W;
• At antenna SWR between 3 and 5 (provided matching is possible): 600 W;
• At antenna SWR between 5 and 10 (provided matching is possible): 200 W;
• Operation with SWR above 10:1 is not allowed;

RF Input Characteristics

• Rated impedance: 50 Ohm unbalanced;
• RF inputs: 1 pc.;
• Input connector type: UHF/PTFE (SO-239A);
• SWR during full tuning (basic cycle): No higher than 2:1;
• SWR immediately after full tuning: No higher than 1.5:1 (1.3:1 typically);

Antenna Outputs Characteristics, Antenna 1 to Antenna 4

• Rated impedance: 50 Ohm unbalanced;
• Maximum antenna output SWR: 3:1 (up to 10:1 with RF power limitations);
• Antenna outputs: 4 pcs.;
• Output connectors type: UHF/PTFE (SO-239A);

Full Tuning Duration (Basic Cycle)
Basic cycle for preparation of user full tuning settings, with automatic storage in the non-volatile memory:

• In the range of 1.8 to 10 MHz: No more than 5 seconds (2-3 seconds typically);
• In the range of 10 to 54 MHz: No more than 3 seconds (1-2 seconds typically);

Input Signal Needed to Prepare User Tuning Settings

• Non-modulated carrier power 25 W +3/-3 dB (12.5 to 50 W);

Power Supply

• +26 VDC, +10/-15%, consumption of 25 W at most;
• Supplied by an amplifier of the ACOM transistor series over the input RF coaxial cable;

Remote Control

• The remote control and indication from an amplifier of the ACOM transistor series is provided over the input RF coaxial cable of the tuner using a 60 kHz / 4800 bps bidirectional FSK modem;

Maximum Length of the Input Coaxial Cable

• The maximum length of the RF coaxial cable between the amplifier output and the tuner input is 100 m (330 ft) for a cable of RG213 type or similar. The cable characteristic impedance should be 50 Ohm and the DC resistance should be below 1 Ohm for inner and outer conductors altogether;

Size & Weight (operating, excluding connected cables)

• WxDxH: 213x316x190 mm, 4.2 kg (8.4x12.5x7.5 inches, 9.3 lbs.);

Shipping Size & Weight

• WxDxH: Approx. 386x462x387 mm, 7.0 kg (15.2x18.2x15.2nbsp;inches, 15.4 lbs.);
• Please, contact us for shipment details;

Operating Environment

• Temperature range: -10 to +40 degrees Celsius (14 degrees F to 104 degrees F);
• Relative air humidity: Up to 95% @ +35 degrees Celsius (95 degrees F);
• Height above sea level: up to 3050 m (10000 ft) without output deterioration.