ACOM 2S1 | Automatic XCVR Commutator

ACOM 2S1 | Automatic XCVR Commutator

The ACOM 2S1 is a TX/RX commutator that allows two transceivers to use a common load. It guards each transceiver's input while the other transceiver transmits, prevents simultaneous transmission, and allows simultaneous reception.

Automatic operation
Operation is fully automatic and the full break-in (QSK) mode in CW is standard.

Easy to use
The ACOM 2S1 may be used to commutate an antenna only or can be adapted in other systems, too. ACOM 2S1 is especially designed to complete the ACOM 2000S automatic antenna selector and ACOM 2000SW remote antenna switch, and the ACOM 2000A automatic HF linear amplifier.

Integrated power supply
There is no need of external power supply device. The ACOM 2S1 uses power supply directly from the transceiver (11-14 VDC / 30 mA power supply).


  • One transceiver's input is grounded while the other transceiver transmits;
  • Simultaneous transmission is prevented;
  • T/R sequencing and RF relay contacts are continuously monitored.

The User's Manual is available as a PDF file only. The latest version of the User's Manual is available under the Download tab (see above).

Frequency Coverage

  • All amateur bands 1.8-54 MHz;

Through-line Power

  • Up to 200 W PEP or continuous carrier;

Input and Output Impedances

  • Nominal value: 50 Ohm unbalanced, UHF (SO-239) type connectors;
  • VSWR below 1.1:1 (1.8-54 MHz) and 1.2:1 up to 80 MHz;

Power Supply

  • 11-14 VDC;
  • Less than 30 mA consumption;

Safety and Electromagnetic Compatibility

  • Complies with CE safety and electromagnetic compatibility requirements, as well  as with the US Federal Communications Commission (FCC) regulations;

Size & Weight (operating, excluding connected cables)

  • WxDxH: 110x42x67 mm, 0.25 kg (4.4x1.7x2.7 inches, 0.56 lbs.);

Shipping Size & Weight (operating, excluding connected cables)

  • WxDxH: Approx. 200x150x70 mm, 0.5 kg (7.9x5.9x2.8 inches, 1.1 lbs.);
  • Please, contact us for shipment details;

Operating environments

  • Temperature range: 0 to +50 degrees Celsius (32 degrees F to 122 degrees F);
  • Relative air humidity: up to 95% @ +35 degrees Celsius (95 degrees F);
  • Height: up to 3050 m (10000 ft) above sea level without output deterioration.

There is one individual purchase option available:

  1. Coffee/tea mug :-)

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