Mobile passive repeater system for radio communications for buildings has special antennas with high gain in narrow band inside/outside building, directly and passively connected to HF line

• Main Author: ALSCHER, ALEXANDER L
• Format: Patent
• Language: English; German
• Published: 08.04.2004
• Edition: 7
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION

The system has special antennas with high gain in a narrow frequency band inside and outside the building and directly and passively connected to an HF line. An external transmit/receive station is connected via an HF line from the antenna with a separate HF connection, an HF coupler and a 3-way HF...