Fu Peil A40f bewegl.

[fireindi64]

Hello,
I found this Item/Box. Its not my favourite but interessting.

first I thing its french because there was an f in the ending of the designation. In the offer is a other box of a charger with ending g ???? And the complete set
are 34 boxes !!!

https://www.ebay-kleinanzeigen.de/s-...4253-240-24184

Is here a little bit more Information to get more knowledge?

best regards
Henning

[Funksammler]

The Fu Peil A40 was a long wave Adcock direction finder. Some 12 different versions existed, most were static; the f, g and h versions were "movable". the Fu Peil A40f "Stettin A" was built by Lorenz and used the EP3 receiver. It used four antenna masts of 11 meters high placed in a 60 meter square. The boxes were needed to transport the receiver, antennas, cables, power supplies and other bits associated with the RDF station.

regards,

Funksammler

[fireindi64]

Hello Funksammler,

thank you for your informations with this help I find a other site.

http://www.deutschesatlantikwallarch...nik/peiler.htm

Whats your opinion, means "beweglich" and "mot." the same?
and do you have a picture, may be out of a Dv of such a station?

best regards
Henning

[Funksammler]

I can't point you towards the exact manual of the A40f, but there are some others that will help to give you an impression.

This is the manual of the Fu Peil E3 receiver: http://www.cdvandt.org/D-Luft-T-4453...u-Peil-E-3.pdf

This describes the typical goniometer drive used with the E3: http://www.cdvandt.org/D-Luft-T-4457-Peil-RA%207.pdf

This is the manual for the Fu Peil A60a: http://www.cdvandt.org/D-Luft-T-4702-Fu-Peil-A60a.pdf

This last document gives you an idea of the equipment that makes up the complete station and what the antenna park would have looked like, although the masts on the A40f were a lot shorter (11 meter version 30 meter high). The distance and arrangements masts would have been similar.

regards,

Funksammler

[Funksammler]

Ah, and I assume that with the "Motorised" version, the receiving equipment was fitted to a truck (probably an Opel Blitz Kfz 305) which could be set up at the centre of the antennas.

regards,

Funksammler

[ChrisMA]

Hello Funksammler,

thank you for your informations with this help I find a other site.

http://www.deutschesatlantikwallarch...nik/peiler.htm

Whats your opinion, means "beweglich" and "mot." the same?
and do you have a picture, may be out of a Dv of such a station?

best regards
Henning

Henning,

to be precise,

"Beweglich" translates to mobile or moveable. The contrary in German is ortsfest (o) or ortsgebunden (engl. = stationary).

"Mot." means motorisiert and translates to motorised.

Regards
Christian M. Aguilar

[Funksammler]

I did a bit more reading on the Luftwaffe long wave direction finders. It seems that the multitude of A40 versions was due to the technological advances achieved before and during the war. The A40 series was exclusively used by the Luftwaffe for air traffic control (Luftsichering) and were military versions of the civilian RDF stations being built at Germany's airfields.

The early installations were H-adcock installations. An H-adcock uses four dipoles, requiring relatively high antennas. The radio hut was placed on the tower structure as well, so that the feed wires from the centre of the dipoles could be fed at 90 degree angles to the masts (in those early installations they did not have the benefit of coaxial cables yet...). The differing versions early on were more about achieving a stable antenna setup, wind and moisture influenced the accuracy of these large antenna systems considerably.

To properly tune and balance the antennas in an H-adcock proved to be difficult and time consuming, so in 1937, Lorenz developed the first U-adcock installation (Peil A 40d) which made this somewhat easier. An U-adcock no longer uses dipoles, but uses half-dipoles insulated from earth. The mast heights could effectively be halved.

Up until 1940, when Germany extended it's territory after the successes of the Blitzkrieg, it required moveable installations that could be built at airfields in the captures territories. Inspired by a capture French installation built by LMT, the Peil A 40f was developed out of the Peil A 40e. It used 11 meter Kurbelmaste while the receiver was housed in a collapsible portable radio hut. The hut or Hütte inspired the name for the later "Hüttenpeiler".

To increase the sensitivity of the direction finders, the Luftwaffe later developed the A50 series. The A40 and A50 were still used exclusively for air traffic control purposes. The A60 was developed using a larger bandwidth, so this could be used for signal intelligence work.

regards,

Funksammler