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Field Phones-use & diagnosis
#11
I have another set too, AN/GRA-6
2 field-telephones made for remote control of radio sets.
Works nice, when I at last solved the problem with weak microphones.

The Handsets H-33/PT has a microphone called close talk or noise cancelling.
And that's true for sure! You have to almost touch the transmitter with your lips, and talk loud and clear.

One of the handsets was considerably weaker then the other, and finally I found out what to do.

When I got it only one of my 2 handsets did work properly and I was not able to get a new capsule, so I replaced it with electronics and a dynamic element. This solution became far to sensitive to noise from the surroundings.

During the years I have learned, many people believe this is a non working transmitter since you have to talk pretty loud and close. Still it was a significance difference and now I took my Dremel and carved out a little more brass along the small slit in the transmitter. Now it works well!

dsk[Image: t4z12u.jpg][Image: 2qnw6dx.jpg]
dsk, proud to be a member of pa2a.org since Feb 2016.
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#12
I guess the AN/GRA-6 not are any common phone to have. Still it is fully functional as a phone, and need s power from 2 D-cells (BA-30) for the telephone service. If you are using it for remote control, it needs a BA-4114/U battery, and these are not common anymore. 5 batteries of 9V type does the job if needed.[Image: 2ibgw0w.jpg]

[Image: 2yvnz8z.jpg]

Since I had trouble with the black handset (H-33/PT) i just found anothe press to talk handset with carbon microphone (transmitter) and used it.

dsk
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#13
A bit off topic, but here is my AE candlestick. I have the Western Electric 500 wall version in my basement and 2 of the desk versions in a box in the attic.

[Image: fec800a57767480e27e5841f11e432a8.jpg]


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DeadEye, proud to be a member of pa2a.org since Jun 2013.
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#14
^What is that strange round thing with the holes in it? Is that how you send text messages? What kind of apps does it have preloaded?
[Image: picsay-1358258813.jpg]
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#15
Not so far off the topic SmileSmile

The old rotary phones does resist much more of power peaks than modern phones. We had a lightning hitting the pole and my over fuses and protection gear nearly evaporated. We had 3 phones, one wireless, one with touch-tones, and the old rotary. The hammer mechanism of the old ringer was forced out of its position, and had to be mounted back in place. The other 2 telephones was burned beyond hope of repair. I just twisted the outside line and the house wiring together and the old phone worked. Big Grin

In addition your candlestick phone is a beautiful thing to have.

And of-course it may operate together with another phone using a battery for voice circuit. A little bit more complicated to send ringing signal.

dsk
dsk, proud to be a member of pa2a.org since Feb 2016.
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#16
I have an oak ringer box to go with it. The candlestick has an added circuit board on the bottom that a telephone guru told me I needed to have it properly work on modern equipment. I bought it off of EBay, as a house warming gift to ourselves. The seller said it came from an automotive garage in Maine. It was covered in grime, which more or less preserved it. The original number disk is still in it, and although faded, reads "03"!


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#17
DeadEye;173345 Wrote:I have an oak ringer box to go with it. The candlestick has an added circuit board on the bottom that a telephone guru told me I needed to have it properly work on modern equipment. I bought it off of EBay, as a house warming gift to ourselves. The seller said it came from an automotive garage in Maine. It was covered in grime, which more or less preserved it. The original number disk is still in it, and although faded, reads "03"!


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Yes, it will at least work much better with the "sub set", it contains all the parts who did not fit in to the base of the phone.
dsk, proud to be a member of pa2a.org since Feb 2016.
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#18
Now, I have got all I need for a working exchange, all parts from 1939-1940, and fully operational.

[Image: 2zz7qfo.jpg]
dsk, proud to be a member of pa2a.org since Feb 2016.
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#19
Info about German wwii telephones etc: http://tinyurl.com/h9d9v95
dsk
dsk, proud to be a member of pa2a.org since Feb 2016.
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#20
Field telephones tends to be expensive at the moment, I just discovered this ad: http://tinyurl.com/hr8dgu8
For me it looks like a pair, but ..... the ad is not mine, and I do not know the seller.

I  have one of these, simple, and well working, but the case is more brittle than a metal case, of course.

dsk
dsk, proud to be a member of pa2a.org since Feb 2016.
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