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Sigma LW10

SKU: SE LW10
€ 84,95

About this product

The Sigma LW-10 HF 40-6m wire antenna is ideal for radio amateurs and operates on all HF bands from 40m to 6m with an external ATU (antenna tuner). The 9:1 UNUN converts the impedance to 50 Ohms and reduces static noise. The antenna is easy to install and can handle 400W intermittent power. For constant data modes a higher power Balun is required. Manufactured in the UK, this antenna offers optimum performance and reliability.

Delivery time:

1-3 Business Days

The Sigma LW-10 HF 40-6m wire antenna is a versatile antenna that is perfect for radio amateurs who want to cover a wide range of frequencies. At the heart of this antenna is the 9:1 UNUN, which converts the impedance of approximately 450 Ohms to the 50 Ohms that your transceiver expects. This antenna offers a reliable solution for efficient signal transmission over the HF bands from 40m to 6m.

Features of the Sigma LW-10 HF Wire Antenna:

  • Efficient Impedance Conversion: The 9:1 UNUN provides optimum impedance matching, which is essential for the performance of your transceiver.
  • Connections: The UNUN has three connections: an SO-239 connector for the coaxial feed line and two machine screws with wing nuts for the wire antenna and ground connection.
  • Easy installation: Mount the power point as high as possible, such as on a pole or wall. Stretch the wire horizontally or in another configuration that fits within the available space.
  • Wide Frequency Band: The LW-10 operates on all HF bands from 40m to 6m with an external ATU.
  • Rugged Construction: Made of high quality materials for durability and reliability.

Installation tips:

  • Use a good quality 50 Ohm coaxial cable, preferably RG-213 or Mini 8.
  • Connect the other end of your coaxial cable to your ATU and then from the ATU to your transceiver.
  • Provide a ground connection with a wire to a ground stake to reduce static build-up and lightning strikes.
  • When using a high-power amplifier, it is essential to place an external ATU between the antenna and the amplifier to prevent damage.

Important note:

The power capacity of 400W CW or 500W SSB is for intermittent amateur use only. For AM transmissions or digital data modes (FT-x, RTTY, etc.) a higher power Balun is required.

The Sigma LW-10 HF wire antenna offers an excellent solution for radio amateurs looking for a reliable and versatile antenna for use over a wide frequency range. Thanks to its robust construction and efficient impedance conversion, you can count on optimum performance and a long service life.


Sigma Euro-Comm

Sigma LW10

€ 84,95

The Sigma LW-10 HF 40-6m wire antenna is a versatile antenna that is perfect for radio amateurs who want to cover a wide range of frequencies. At the heart of this antenna is the 9:1 UNUN, which converts the impedance of approximately 450 Ohms to the 50 Ohms that your transceiver expects. This antenna offers a reliable solution for efficient signal transmission over the HF bands from 40m to 6m.

Features of the Sigma LW-10 HF Wire Antenna:

  • Efficient Impedance Conversion: The 9:1 UNUN provides optimum impedance matching, which is essential for the performance of your transceiver.
  • Connections: The UNUN has three connections: an SO-239 connector for the coaxial feed line and two machine screws with wing nuts for the wire antenna and ground connection.
  • Easy installation: Mount the power point as high as possible, such as on a pole or wall. Stretch the wire horizontally or in another configuration that fits within the available space.
  • Wide Frequency Band: The LW-10 operates on all HF bands from 40m to 6m with an external ATU.
  • Rugged Construction: Made of high quality materials for durability and reliability.

Installation tips:

  • Use a good quality 50 Ohm coaxial cable, preferably RG-213 or Mini 8.
  • Connect the other end of your coaxial cable to your ATU and then from the ATU to your transceiver.
  • Provide a ground connection with a wire to a ground stake to reduce static build-up and lightning strikes.
  • When using a high-power amplifier, it is essential to place an external ATU between the antenna and the amplifier to prevent damage.

Important note:

The power capacity of 400W CW or 500W SSB is for intermittent amateur use only. For AM transmissions or digital data modes (FT-x, RTTY, etc.) a higher power Balun is required.

The Sigma LW-10 HF wire antenna offers an excellent solution for radio amateurs looking for a reliable and versatile antenna for use over a wide frequency range. Thanks to its robust construction and efficient impedance conversion, you can count on optimum performance and a long service life.


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