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Festungsantenne


Funksammler

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It become more easy to understand thanks FS for picture.

i have readen again D1790/1 , 5, 6, i have seen inside  those notices that there 

 Is also D1790/2 and D1790/4 has anybody knowledge of D1790/3?

i  can buy one time  copy of D1790/2 but 100€ for copies too expensive

we are always speaking about the emergency antenna put in a well or duct

but they are others antenna used and connected to set by other way 

sometimes they use the N4 with a self  made support for antenna

or they used  side of bunker to connect an antenna .

i post here some pictures  seen in D1790/6 , where we see an antenna

base  alter art , so meaning that there is also a n A neu art .

the  funkschrank illustrated  in bunkerforum is what i had said in a previous 

post but i was’nt aware that 2 different type exist.

it stand near niche 4 in entry  just near N4 it has sense if set ,antenna,

are stowed there 

 

23E001CF-1A88-410F-941C-FB85D4117A9D.jpeg

5A00C9E7-71AE-4289-9732-149D56DD86CB.jpeg

20702B86-178B-4901-9DB0-596CB3160312.jpeg

C8670ED0-6ED7-4964-B1A1-FBFAC9305575.jpeg

A7B7F36F-A34D-4F82-806E-202F538AE84E.jpeg

DED47F94-7D97-408B-831C-7927C1006378.jpeg

343E0A87-88CF-4A57-91F4-2D0F9A74E39A.jpeg

9254911C-EABC-4A8C-B629-5C1876D19D58.jpeg

0B2FA304-F227-40F2-8058-0A53C8643FCE.jpeg

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The complexity and nuance of these systems never ceases to amaze me.

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34 minutes ago, tornfuté said:

i  can buy one time  copy of D1790/2 but 100€ for copies too expensive

 

Yes, i hate that manual selling business where they are making money selling copies of the copies of the copies...

This stuff should be free for learning.

D1790/6 is luckily available for free : http://www.cdvandt.org/D-1790-6.pdf

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Fortunaly cdvandt provide good copies of 

D1790/1, D1790/5 and 6  for number 5 it’s not in the list but i see it 

elsewhere on the site 

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D1790/4 exists , but i haven’t found it , knowing germans , i guess 

D1790/3 must exists, just waiting it comes out  from somewhere

 

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On 07/03/2019 at 11:50, tornfuté said:

D1790/4 exists , but i haven’t found it , knowing germans , i guess 

D1790/3 must exists, just waiting it comes out  from somewhere

Pierre, you are right. Thanks to Werner i know now that those two images (i post them here)

are from manual D 1790/3 "Einbauanweisung für die Festungsantennenanlage" vom 1.9.1943

festung1.jpg

festung2.jpg

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On 07/03/2019 at 10:50, tornfuté said:

D1790/4 exists , but i haven’t found it , knowing germans , i guess 

D1790/3 must exists, just waiting it comes out  from somewhere

 

D1790/3 does indeed exist: https://www.dropbox.com/s/s42dqtc8wk6bgla/D.1790_3 Einbauanweisung für die Festungsantennenanlage (1943).pdf?dl=0

Regards,

Funksammler

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Thanks  FS good find , i haven’t yet read it completely , it’s  very interesting

and help very well to understand  , the use of antennas in bunkers.

may be it’s possible to put in one place all the D1790  available  in pdf 

on this site ,like this everyone interesting in the subject can download it .

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11 hours ago, Funksammler said:

Exactly the same filename i noticed earlier in this thread:

http://www.kystfort.com/forum/viewtopic.php?f=38&t=5504&start=45

However that dropbox download link was not working anymore and i couldn't

get that document from there :(

That thread also has name of D 1790/4 - Gebrauchsanleitung für die Festungsantennenanlage (1944)

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6 hours ago, tornfuté said:

Thanks  FS good find , i haven’t yet read it completely , it’s  very interesting

and help very well to understand  , the use of antennas in bunkers.

may be it’s possible to put in one place all the D1790  available  in pdf 

on this site ,like this everyone interesting in the subject can download it .

I tried to attach it but the file size exceeded the maximum. I need to find out if there is a large size document dump possible on the forum somehow....

regards,

Funksammler

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@Lenny - regarding that separate proper download area you mentioned- would there be a file size limit?

We currently like to share here ~100MB file, but this exeeds the attachment limit...

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  • 2 months later...

Hi everyone, I made few  pictures of the Verschlußkopf on top of the local Battalions-Gefechtsstand. For displaying the antenna would be nice to have such a part connected to a frame with a clear acrylic tube as Antennenführungsrohr to put the antenna in or maybe even better, make a copy of the Verschlußkopf in plexiglass as well.

As we can see in pictures in D-1790-3 This tube is 108 x 3.75 nach Din2448 with a length of 2.3 m.

You see the end of this iron Antennenführungsrohr in the Verschlußkopf in the last picture .

I never saw a picture in wartime with this antenna, only wire antennas. For HF, wire antennas seem a better option to me also because those can be used with lot more power and low profile and why not use a dipole for VHF? Maybe the 3 whips made it more broadband? Still in the publication "Funker im Bunker!" it says in second line already "Ist eine Festungsantenne eigebaut, dann verwendest Du diese!"

What we can see in the placing of the Verschlußköpfe on top of bunkers is that many times 2 are close together and never could not be used at the same time, even for just receiving, because the whips would touch each other.

What would be interesting is testing the working of the antenna. I am thinking of trying to make a solid type of the Antennenspreizkopf. What I need to know is the angle of the whips when spread. What I measured in all the drawings that would be around 155° with the vertical axis, so that's about 65° to the horizontal. I hope Funksammler can confirm this.

 

regards, Kees

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Thanks for posting some great photographs of the antenna tubes, they are certainly not lacking on this particular bunker! You will have to remind me about measuring the angle in the couple of weeks, at the moment I am moving around part of the collection, suffering from poor access and lack of time at the moment... 

regards,

Funksammler

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