Become our sponsor and display your banner here
Results 1 to 9 of 9

Ok, so what is it exactly?

Article about: I have never professed to know everything about this collecting lark, but do know that when you think you know it all its best to go back to the beginning and start again. So I need educatin

  1. #1

    Default Ok, so what is it exactly?

    I have never professed to know everything about this collecting lark, but do know that when you think you know it all its best to go back to the beginning and start again. So I need educating and hope one of you guys can help, what is this contraption. I have loads of book on all sorts of German militaria but nowhere can I finf anything on this piece.
    Look forward to hearing from someone on it.
    all the best,
    D.
    Click to enlarge the picture Click to enlarge the picture Click image for larger version. 

Name:	RED STRIPE PHONE BOX 5.jpg 
Views:	74 
Size:	257.9 KB 
ID:	270259   Click image for larger version. 

Name:	RED STRIPE PHONE BOX 3.jpg 
Views:	68 
Size:	242.6 KB 
ID:	270258  

    Click image for larger version. 

Name:	RED STRIPE PHONE BOX 1.jpg 
Views:	42 
Size:	255.0 KB 
ID:	270262   Click image for larger version. 

Name:	RED STRIPE PHONE BOX 4.jpg 
Views:	77 
Size:	248.4 KB 
ID:	270264  

    Click image for larger version. 

Name:	RED STRIPE PHONE BOX 2.jpg 
Views:	64 
Size:	256.6 KB 
ID:	270266   Click image for larger version. 

Name:	RED STRIPE PHONE BOX 8.jpg 
Views:	50 
Size:	247.8 KB 
ID:	270267  

    Click image for larger version. 

Name:	RED STRIPE PHONE BOX 10.jpg 
Views:	47 
Size:	252.6 KB 
ID:	270268   Click image for larger version. 

Name:	RED STRIPE PHONE BOX 6.jpg 
Views:	55 
Size:	251.3 KB 
ID:	270269  

    Click image for larger version. 

Name:	RED STRIPE PHONE BOX 9.jpg 
Views:	68 
Size:	247.4 KB 
ID:	270270   Click image for larger version. 

Name:	RED STRIPE PHONE BOX 7.jpg 
Views:	59 
Size:	251.0 KB 
ID:	270271  

    Click image for larger version. 

Name:	RED STRIPE PHONE BOX 11.jpg 
Views:	53 
Size:	230.9 KB 
ID:	270272  

  2. # ADS
    Circuit advertisement
    Join Date
    Always
    Location
    Advertising world
    Age
    2010
    P
    Many
     

  3. #2

    Default Re: Ok, so what is it exactly?

    Hi

    Interesting bit of equipment. From the 'working instructions' and the circuit diagram, I would think its a signal amplifier for a field telephone (for use down a very long phone line). It says that you attach your field telephone set and a cable to the unit, and this amp basically sits in between them amplifying the signal. After set up, you call the 'remote station' and use the Tone Control (Ton I and II) to adjust for distortion (due to overamplification).

    I don't know what you'd call it in German.

    Rob

  4. #3

    Default Re: Ok, so what is it exactly?

    I'm always impressed at the high quality of these German items...appreciate the detailed photos as well!

  5. #4

    Default Re: Ok, so what is it exactly?

    Rob has nailed it - a field telephone. Relatively common.
    Your example is missing the hand-held reciever.........
    Regards,


    Steve.

  6. #5
    ?

    Default Re: Ok, so what is it exactly?

    Ah, nice piece, I saw something similar for sale at a car boot sale once but didn't know what it was so avoided it :/

    Robbie

  7. #6

    Default Re: Ok, so what is it exactly?

    I was going to say it looked like a raido or a phone. Can anyone do me a favor and look at the forum post 2 down on the vietnam era spooky helmet? THANK YOU

  8. #7

    Default Re: Ok, so what is it exactly?

    Quote by Walkwolf View Post
    Rob has nailed it - a field telephone. Relatively common.
    Your example is missing the hand-held reciever.........
    Sorry Walkwolf, that's not what I said. It's definitely not a regular Wehrmacht field telephone. What it seems to be, literally, is a tetrode amplifier (using an RV2,4T3 tetrode valve). Whereas you would normally attach the phone line to a field telephone, what you do here is attach the phone line to this unit (1 on circuit diag), and then attach a field telephone to it as well (2).

    Looking at the circuit diagram, when this unit is switched off, the setup will operate as a normal field telephone, as the on-off switch (U1) will connect the line to the phone directly in the off position. When it is switched on, the amplifier unit is connected to the phone line directly and powered up, amplifying the signal from the other end of the phone line.

    I would have to know exactly what plugs into it to figure out what else it does. It has sockets for "kopfhorer" (headset) and "taste" (button or key?), but not sure what form these would take.

    It's a field phone accessory, which i imagine would be used over a very long or poor quality line, to boost the signal. The British Army had a very similar unit, the Telephone Set F High Power, which was an amplifier and field phone all in one unit, used for the same situation.

    Rob

  9. #8

    Default Re: Ok, so what is it exactly?

    My bad, Rob - I did not read into your post enough to get the jist of everything
    you were saying - I understand now, and can appreciate it's importance
    as a signal amplifier.
    Regards,


    Steve.

  10. #9

    Default Re: Ok, so what is it exactly?

    Quote by Walkwolf View Post
    My bad, Rob - I did not read into your post enough to get the jist of everything
    you were saying - I understand now, and can appreciate it's importance
    as a signal amplifier.
    No problem, just thought maybe i didn't express my thoughts clearly enough

    I have to state though, an amplifier is what it seems to be, as it has some unusual features in its circuit design (e.g. it has a strange output signal feedback arrangement to one of the grids, almost like an ultralinear amp), and some of the circuit symbols are not what I'm used to with British style diagrams of the period.

    If it were mine, I would get some battery holders, batteries, some wire, banana plugs, solder and rig it up to get it working to see how it operates. Shouldn't be too hard as long as the valve/tube is OK (and they're a lot tougher than people imagine).

    Rob

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •