FunkHorcEmpfänger - u1 / Monitoring Receiver





Fu.H.E.u1 is a radio receiver which was used with direction finding antenna Fu.NP.E a/c for "peiling" of enemy activity.

LA8AK’s block diagram.

Funkhorchempfänger 'u' (Monitoring receiver)
Frequency ranges:
1 - 0.73-1.65,
2 - 1.65-3.5,
3 - 3.5-7.5,
4 - 7.5-16,
5 - 16-25MHz
IF= 470kHz.

Calibrator xtal: 2000kHz
Circuit: 9x RV2P800 as RF, MIX, Local osc,
IF1, IF2, Audion detector, Audio, Calibrator, BFO.
Power: 2V 1.8A, 90V 20mA. Automatic bias from anode current.
Measures: 453H x 365W x 250D. Weight 22kg(?)

This is a complete direction finding equipment. Receiver Fu.H.E.u1 and antenna Fu.NP.E a/c

From NRHF’s fielday 2005.
Here we are operating the direction finder and Fu.H.E.u1 receiver.
The transmitter we are trying to find is a hidden spy transmitter from WW2 (AGENT SET MODEL 3/II - "BERIT").
Secret Norwegian agents operated a similar transmitter from the same area under WW2.
The Germans worked hard with direction finders like this one to find the secret transmitter.
In spring 1945 they succeeded to find the transmitter.
They sent in a troop of soldiers to catch the radio operators. Two of the Norwegians were killed, and one was arrested.

The results of our ”peil” work were extremely good.
My direction towards the target was less than one degree wrong.
We used 3 different locations in the area to find the exact location of the transmitter.
My coordinates were less than 100 meters wrong.

Members of NRHF are studying my direction finder equipments.

Testing out the direction-finding equipment for the first time.

Fu.H.E.u1 behind the front plate.

A very advanced gear is used for frequency control and the frequency dial.

All the RV2P800 is located at the top. The tubes can be easily exchanged.

Frequency dial plate has both meter and frequency marking.
Meters on one side.

MHz on the other side.

The molded front panel, front.

The molded front panel, back.