Technical Documentation – Active Antenna Amplifier
LZ1AQ technical articles organized by topic
Model AAA-1C Specifications
Control Board. Addendum to AAA-1C documentation
Revisión V1.10 de la Tarjeta de Control y Amplificador. Anexo a la documentación AAA-1C (ES)
This document describes the changes made in Model AAA-1C and It is an addendum to Model AAA-1B specification.
*With obligations to José María Pereira from Spain who has made the Spanish translation.
Description and Specifications
This amplifier is intended for construction of small wideband active receiving antennas from LF to upper HF bands. The mechanical construction of the particular loop/dipole…
*With obligations to Rainer Kamenz DE3RKP from Germany http://gross-mehssow.de/de3rkp/ who has made the German translation.
Antennas
There are two goals when designing a small wideband loop – low inductance and large area. The construction of the loop should be made with the following rule in mind…
*With obligations to Rainer Kamenz DE3RKP from Germany http://gross-mehssow.de/de3rkp/ who has made the German translation.
*With obligations to José María Pereira from Spain who has made the Spanish translation.
Mounting Instructions
The following sections describe in details various parts of the active antenna amplifier. The connection and Control board schematics are shown on Sch.1 at the end of this document…
* With obligations to Ivano Giacchi IK2RLM who has made the Italian translation
* With obligations to José María Pereira from Spain who has made the Spanish translation.
PC Control of AAA-1 Modes
It is possible to control the modes of AAA-1 from the PC. It is convenient to have such an option e.g. if you have a remote station there must be way to switch the antenna modes via software. The standard COM port can be used for this purpose.The user must build a very simple additional interface board and to use the applied software.
Questions and Answers
What are the requirements for the DC power supply (PS) voltage? Measured minimal voltage between control points CP8 and CP11 should not be less than 11.8 V. The maximal… Read the rest
