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Old 11-27-2016, 12:54 AM   #1
ChrisS5917
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Greetings All!
This is my first post on this board. I picked up two complete M&G FF33s today, both in very good condition. Included in the sale was this extra handset with an unusual modification. I'm hoping someone here may be able to explain the reason for, or the use of, the modification as shown in the photos. I believe this was a period fix. It appears the Bakelite casing was separated and a section of wire was attached to the connectors within. I don't have a schematic, but the red wire is attached to post #1, while the black wire shows continuity with posts 2, 3,and 4. I'd enjoy knowing the purpose behind this curious modification.

Thanks for your interest and considerations.
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Old 11-27-2016, 10:12 AM   #2
rv12p2000
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Hello ChrisS5917

Please have you a pic for internal connexion ?

In schematic diagram about ff33 you have the possibility for second earphone

may be a wiring error ?

But as you specify strange modifications

Regards
RV12P2000
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Old 11-27-2016, 11:17 AM   #3
Funksammler
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Definately not a period modification. First of all the troops were prohibited from making changes to the equipment. Secondly the modification is done in an extremely amateurisch way, no wehrmacht communications mechanic (or postwar professional) worth their salt would would have done such a shoddy job. Thirdly the handset looks like it has been made up from non matching parts. So a lot of indications of a hard postwar life on this one...

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Funksammler
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Old 11-27-2016, 03:36 PM   #4
ChrisS5917
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Quote:
Originally Posted by rv12p2000 View Post
Hello ChrisS5917

Please have you a pic for internal connexion ?

In schematic diagram about ff33 you have the possibility for second earphone

may be a wiring error ?

But as you specify strange modifications

Regards
RV12P2000

I should have thought of including this shot! Please see the attached:

Modification- internal image

Also, only one of these is by "M&G." The other is marked "ARK prx1944E"
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Last edited by ChrisS5917; 11-27-2016 at 03:49 PM. Reason: Additional information
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Old 11-27-2016, 06:44 PM   #5
rv12p2000
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Hello ChrisS5917

many thank for the pic about internal wiring

Funksammler : well summed up the (bad) change

Regards
RV12P2000
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Old 11-27-2016, 10:23 PM   #6
ChrisS5917
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Thanks for the replies, Gents, they are all much appreciated. Still, setting aside the the poor quality of the work, and regardless of when the modification was completed or by whom, the question remains; what is the purpose of this connection? Would it allow for a battery connection? Perhaps attaching to an external speaker? Maybe to a headset? Albeit of dubious craftsmanship, this alteration was obviously completed with a specific intent; can it be speculated as to what?

Chris
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Old 11-28-2016, 04:40 AM   #7
Funksammler
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Difficult to say, pin 4 and 5 seem to be connected so if a battery was connected to the two wires and the speak button was depressed the microphone and earphone would be put in series with the battery so you could probably hear your own voice. Maybe somebody used it to test microphone and speaker elements or maybe somebody used it as a toy....

regards,

Funksammler
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Old 05-24-2018, 01:56 AM   #8
csmagdo
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This Hap33 was modified to be a DIY line tester, however you could hear yourself back easily.



An external dialer could be also attached in a parallel way.

Csaba
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