TCI Model 619
Dual Mode HF Antenna Compact HF Antenna
The TCI Model 619 antenna is a small, inconspicuous, versatile antenna designed to operate over the entire shortwave frequency range. It requires minimal ground area (it occupies a rectangle of 4.6 m x 7 m) which also makes it ideal for rooftop operation.
A special feature of the 619 antenna is that it can be driven in two different transmission modes. One mode is similar to that of a monopole antenna producing a low angle of radiation, while the other is similar to that of a balanced loop and produces a high angle radiation. These two modes are driven by a special dual-mode coupler which allows simultaneous transmission over the entire 2 MHz to 30 MHz range by two separate transmitters connected to the same antenna. This again allows a savings in ground or roof area by reducing the number of antennas required.
- Dual mode – simultaneous operation of two transmitters without frequency restrictions
- Small land area – easy to install on roofs
- Almost invisible – thin members make it hard to see
- Simple installation
- Wide bandwidth – no tuners