Autophon AG, CH - Solothurn
All Wave Receiver E52
überarbeitet am 17.10.2010
As a successor to the E-39 receiver, which still used a technology with plug-in coil sets and a calibrated logging scale, Autophone started developing the E-44 with a turret tuner with directly switchable wavebands and a calibrated dial which allowed the frequency to be read directly from the dial.
Only a small fraction of these receivers has produced with a modified arrangement to use the common E...-valves. It's estimated that around 30 sets have been sold to Swiss PTT (Postal Telephone Telegraph Services) and Agence France Press, the success as a commercial shortwave receiver on the international market has been very small.
This receiver is a 19 inch rack construction, the mains socket and antenna connectors have been moved to the back of the receiver.
The front panel is divided in two sections by the horizontal linear dial
of the turret tuning arrangement.
The single conversion set with two HF- and another two AF- amplifier stages is working with an intermediate frequency of 75 kHz in the ranges below 2 MHz and with an intermediate frequency of 1,6 MHz on the higher frequency bands.
© Martin Bösch 26.8.2007