ACOM antenna tuner

Nothing beats that feeling of knowing that your “pride and joy” amplifier is pushing its power into a perfectly matched antenna. Unfortunately the reality is rarely a picture of a perfect match. For that reason, investing in an amplifier but not investing in a matching antenna tuner would be a serious mistake.

ACOM automatic antenna tuner is not just a visually pleasing addition in your system, but a mighty solution that would keep your amp happy for years to come. It works with any ACOM amp, easy to setup. Flawless performance guaranteed.

ACOM 06AT | Automatic Antenna Tuner and Switch

Price: only $2,200

Operating Frequency Range

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

Extensions and/or changes on request;

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: 1500 W;

At antenna SWR between 2.5 and 3: 1200 W;

At antenna SWR between 3 and 5 (provided matching is possible): 500 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;

Input connector type: UHF/PTFE (SO-239A) – 1 pc.;

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);

Output connectors type: UHF/PTFE (SO-239A) – 4 pcs;

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 fastening elements and connected cables)

WxDxH: 212x312x158 mm, 3.8 kg (8.4×12.3×6.3 inches, 8.4 lbs.);

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.