Fu. H.E. 1 Supplemental Monitoring Receiver (E 417 N)

(HE1 Horchempfänger)

This receiver was used together with the EP2 direction finding receiver to find a spy transmitter operating on a particular frequency. Once the frequency was established by listening through the Fu. H. E. 1, the EP2 would be used in a direction-finding mode to find the compass direction of the transmission. Both the Fu. H. E. 1 and the EP2 had identical frequency scales and ranges. The Fu. H. E. 1 lacks the direction finding hardware of the EP2. These two receivers are often seen in Luftwaffe radio van configurations that monitored entire districts for spy transmitters.

Set packaged in 2 portable containers: receiver pack, and accessories pack. There is no specific information on the Internet about this receiver, other than photos of it being used along with EP2 receivers in radio direction finding vans.

The internal metal components are constructed from aluminum, making this unit surprisingly light-weight.

 
Specifications
 
FREQUENCY RANGE:
.075 to 3.333 MHz in 5 bands. Band I: 69-150 KHz; Band II: 150-343 KHz; Band III 330-775 KHz; Band IV: 720-1680 KHz; Band V: 1580-3620 KHz.

NUMBER OF CRYSTALS:
None

PRESET FREQUENCIES:
None

ANTENNA:
The type of antenna used depends upon the tactical employment of the unit.

TUNING:
(MO OR CRYSTAL) Mo.

SENSITIVITY:
Maximum (Output of 4v into 4000 ohm resistance for 2/10 mV antenna)

SELECTIVITY:
High

POWER SOURCE:
Edison storage battery 4.8 NC 10 for filament voltage to tubes; 3 30-v or 1 90-v battery for plate (anode) voltage.

SIMILAR SETS
See Telefunken (1938) catalog-Type IIIN

POWER OUTPUT:
Consumption low voltage input 0.45 amp; Plate current 18 mA.

TUBES (TYPE and NUMBER):
6 tubes of 2 types -- 3 x RE 084K (1 LE amplifier, 1 detector, 1 heterodyne) and 3 x RES 094 (1 HF, 1 mixer, 1 IF). The anodes of all tubes lie in a common circuit carrying voltage of 100

USE:
For DF and "sense" determination; to receive signals from and to take bearings on CW transmitters within the limits of the wave band of .075 to 3.333 MHz.

TYPE OF SIGNAL:
Tone

RANGE: (MILES)
Miles

TO COMMUNICATE WITH:
DF on transmitters

TO REPLACE IN PART:  
   
TRANSPORTATION:
Portable - packed in 2 containers - can be hand carried. Stationary - can be installed in tent, hut or vehicle.
 

 
The receiver with the lid closed.

 

 
The magnificent Fu. H.E. 1 as I've received it.

 

 
Manufacturer's data

 

 
The scale

 

 
Frequency range switch.

 

 
Volume control .

 

 
Headphone connections

 

 
Ground connection and head-phone connections.

 

 
Light attachment screw and pull handle to extract radio from case.

 

 
On / Off switch, frequency adjustment knob, and feedback control.

 

 
Battery pack connector. Note the distinct hexagonal securing screw.

 

 
Battery and vacuum tube testing control. The first (and default) position from the left tests filament voltage, biasing grid voltage, anode voltage, then tubes 1 through 6.

 

 
The antenna connector.

 

 
The Voltmeter and filament voltage adjustment control.

 

 
Instructions to lubricate mechanisms every 3 months on the inside of the lid.

 

 
The AMAZING and rare schematic!!! All of the different tube current wiring systems are color coded!!! WOW!!!

 

 
The tube compartment.

 

 
The tube sockets.

 

 
Left side - cover removed .

 

 
Rear - cover removed .

 

 
View from the left.

 

 
Fu. H,E. 1 being used in a Luftwaffe Radio Van with the Peilantrieb mit Peilskala und Drehrohr, and the EP2 to the right of the photo.

 

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