All articles published in SIGNAL magazine
All articles published in SIGNAL are presented on this page. In some cases additional links to sites relevant to the text are included. Kindly note that links are also shown in the articles themselves.
A great thank you goes to the publications manager of VMARS and editor of SIGNAL, Prof. Bronek Wedzicha, M0DAF for his excellent layout work and all improvements of my "non-native" English.
Swiss military HF-LF receiver E44
The article starts with the history of this receiver during the diffcult times of encircled Switzerland in WW2 and describes the receiver itself, the resources mobilized to manufacture it in 1944/45 and the restauration back to a working unit.
- The complete text with pictures published in SIGNAL 59: → The Autophon E44 HF-LF receiver.
The portable military Rohde & Schwarz ESEF VHF receiver
This text describes the author's receiver originally purchased in 1963 as a tunable IF for a 2m amateur band converter. After many years it was reactivated and after minor work in excellent condition.
- The complete text with pictures published in SIGNAL 57: → The Rohde & Schwarz ESEF VHF receiver.
The Bendix RA-1B aircraft radio receiver
The text presents the full restauration of this receiver made in the 1940ies including a real dynamotor supply and an installation on an aluminum plinth.
- The complete text with pictures published in SIGNAL 56: → The Bendix RA-1B aircraft radio receiver.
400Hz inverters for air-borne radios
This text presents the requirements and possible solutions for the task of providing 400Hz AC power to aircraft radios. Part 1 covers introduction and data of commercial units and explores and documents an experiment using a "simple" PWM inverter. The results are usable but not really satisfactory and part 2 will describe a more complex solution using today's technology. Unfortunately that part is still in the works, sorry.
- The complete text published in SIGNAL 46: → 400Hz inverters for air-borne radios, part 1.