FU1 (Neuer Art): Torn.E.b

[Funksammler]

In 1937 the old "Tornister Empfänger E 445b Bs was replaced by the Torn.E.b in the FU equipment list. Both receivers were the same size, but the batteries moved from the top of the box to the bottom and with the new Torn.E.b the battery case could be separated from the receiver:

By using newly discovered magnetic materials, the coil sizes could be reduced significantly so that the three plug-in units were replaced with a single internal revolver containing eight frequency bands. The frequency scale was still not directly calibrated, but the frequencies could be read from two tables visible through small windows in the front panel. The tables change as the revolver is moved from one band to the next. A centrally place band selection knob allows for the bands to be changed, to the right of it is the frequency fine tuning knob. The tuning can be read on the window on a scale from 0-100 which can be compared to the frequency tables visible in the windows:

Just above the fine tuning scale is the regeneration control knob, a small scale above and to the left shows the regeneration on a scale form 0  to 100. On later production Torn.E.b's this scale was omitted. Centre top is a antenna trimmer which is set with a screwdriver to maximum signal strength, this setting only has to be adjusted once with a given antenna. To the left of this is the volume control and the battery voltage meter. On late war production Torn.E.b's this voltmeter was no longer fitted and replaced with a blind plate. On the left of the panel, an on/off switch and an audio filter switch complete the controls.

The filament voltage of the new RV2P800 valves is 2 volts, so the Torn.E.b uses a 2B38 (2 V Lead/Acid, 38 Ah) filament voltage battery and a 90V Anode battery to power the valves. The top and bottom boxes are connected by clips and a rotating lock on both sides. In order to use the carrying straps, the two boxes have to be connected:

The antenna connects to a knurled knob on the top right, while the counterpoise could be connected to the bottom right knob. A length of wire (the longer the better) was typically used as an antenna:

Very early Torn.E.b's can be found with the external boxes painted in pre-war three tone camouflage pattern. Most however have been repainted in dark grey as per the 1940 orders. Post 1940 manufactured examples came out the factory with grey boxes until late 1944, when ordnance tan boxes became the norm:

To be continued...

 

[val]

Beladeplan for Torn.E.b

[kriegsfunker]

Beautiful setup.  What antenna is attached to the Torn.E.b?  What was the wire length?