CIOS File No. XXXI-I
(CIOS 
XXXI_I)
Establishments of the Forschungsanstalt der Deutschen Reichspost
CIOS 
consolidated advance field team assessment report
Target Number: 
Black list 7/57c
and other 
topics
 
Keywords:
F.d.D.R.P Forschungsanstalt der Deutschen 
Reichspost; Amtfür Wellenausbreitung; F.d.R.R.P. Bernried; F.d.R.R.P. Munich 
area; Dr. Vilbig; Ionospheric stations D.R.P. control; Gräfing; Vilbig paper on 
"width-modulated transmissions"; Building in Weisenhaus Strasse 45; propagation 
section came in 1943 from Berlin; very little gear of interest; Dr. Führer of 
D.R.P.might be useful to help locate wanted people in Munich area. He is very 
cooperative and speaks good English; Investigation of Forschungs Anstalt der 
deutschen reichspost at Landshut, location at Post Direction Building; Schloß 
Niederaichbach; Postrat Korblein head of department; Dr. Rössler at F.d.R.R.P. 
Berlin 1937, Landshut 1945 worked on dielectric constants of gasses and liquids; 
DRP Wank; Dr. Bender recording and analysis of atmospheric disturbances 
including use of recording equipment; Dr. Vogt 1931-34 assistant 
Phys.Inst.Heidelberg, 1934-36 Telefunken (antennae), 1939 Head of receiving 
station propagation and DF of F.d.R.R.P. at Kagel, Evacuated with some equipment 
to Landshut in Spring 1945. Collaborated with Dr. Grosskopf at Kagel, Main work 
on HF/DF; Dipl.-Ing. von Collas from Berliner Physikalische Werstätten (BPW), 
special interest in cm tubes, no English; B.H.F.; magnetron; Measurement of 
dielectric constant of admosphere Dr. Rössler; Dr. Bender interrogation on 6 
June 1945; Dr. Bender had been working on recording of admospherics at Landshut 
for the last two years; Schloss Niederaichbach has been rather damaged .. ; Dr. 
Bender who at present lives at Jäger Strasse 484 at landshut student of Dr. Hess 
at Innsbruck University and took his Ph.D. in 1933 ... ; sDr. Bender returned to 
Prague .. he got in touch with dr. Vilbig; signed Dr. M.V. Wilkes, S.D.O. RAF. 7 
July 1945; Interrogation of Dr. Vogt, he also made some tests on  
Wullenweber a long based Adcock system build in the navy at Neustadt/Holstein; 
During the last year a new direction finder (Dochtkohle) was developed for naval 
purposes; ..This was designed as to be free from polarisation error and yet 
small and sensitive. It was intended to fit it to the Schnorkel on U-boats but 
the war finished before this could be done; Experimental model of Dochtkohle was 
built in September 1944 and the navy finally decided to apply it to the 
Schnorkel at a meeting on 5 April 1945, the contract to be given to the firm of 
Siemens. It was estimated that 20-U-Boats could have been fitted by the end of 
May. Dochtkohle depends on the principle of the cardioid polar diagram which can 
be obtained by combining the signals from a vertical aerial and a loop aerial in 
the correct proportions and which has long been used for obtaining sense with 
direction finders ... ; It was found that Dochtkohle gave the largest deviation 
when the incident rays were nearly vertically polarised. This behaviour is the 
opposite to that of an Adcock, which gives minimum errors for nearly 
horizontally polarised waves. Dr. Vogt thought that the final model of 
Dochtkohle appeared somewhat as follows... ;  dr. Grosskopf has written an 
account of his work together .... ; Zentralstelle: Bevollmächtiger für 
Nachrichtenmittel Glöcker; HWaPrüf Berlin Oberbaurat Dr. Schelchoss? (Schellhoss 
- Schellhoß); GAF Rechlin Dr. Wäsch; Navy NVK Kiel now at Wolfenbüttel, DF work 
near Neustadt/Holstein Oberbaurat Dr Maximilian Wächter at Pelzerhaken, 
Kellenbüren .. ; Interrogation of Dr. Haase; Speech compression; Anti-Jamming; 
F.d.R.R.P. at Jokobneuharting, Dr. Mentzel concerned with TV before the war; 
Dipl.-Ing. Hanisch, Dr. Pollic; Dipl,-Ing. Rechl Spiral antenna B.H.F. (BHF) and 
Dipl.-Ing. Sellesek; Dipl.-Ing. Hamisch; Report visit to D.R.P. Bernried; Dr. 
Phil. B. Beckmann; a Lorenz magnetometer ... ; It is strongly recommended that 
Dr. Beckmann should be allowed to enter the institute to collect together his 
apparatus and to resume work as soon as possible ... ; Dr. Beckmann 
interrogation at Schloss Bernried; Deutsche reichspost AACH near Rodolfzell, 
subjects tv - control of glide bombs; electron multipliers - klystron - 
magnetrons - Hela (Broad band intercept receiver) ...   
 
 
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