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Old 25th January 2008, 04:22 PM   #1
Milen is offline Milen  Bulgaria
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Default Help me to identify unknown tube

Click the image to open in full size. Click the image to open in full size.

As you can see on the tube base is written "036" and "A.25.52" "F8.0". The anodes are big and flat... The base is like on AZ1, but I cant't find similar AZ1 to this...
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Old 25th January 2008, 09:06 PM   #2
jnb is offline jnb  Australia
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Looks somewhat like a dual diode.
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Old 25th January 2008, 09:09 PM   #3
Milen is offline Milen  Bulgaria
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Yes, it is dual diode...
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Old 25th January 2008, 09:41 PM   #4
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Looks like German socket.
AZ36?

I never heard of such tube. May be AZ11?

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Edit:
Here is some interesting document:

http://www.radiomuseum.org/forumdata.../RCRcmpl%2EPDF
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Old 26th January 2008, 07:42 AM   #5
dhtrob is offline dhtrob  Netherlands
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I am almost sure it is an AZ4. This one has a P-socket and has abot the same ratings as a RGN2004.
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Rob
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Old 26th January 2008, 10:43 AM   #6
jnb is offline jnb  Australia
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Hoping this may help.

AZ4
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Old 26th January 2008, 10:58 AM   #7
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Looks a LOT like the AZ4 I have here...
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Old 26th January 2008, 01:48 PM   #8
dhtrob is offline dhtrob  Netherlands
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to be even more specific: I think it is a Tungsram AZ4. The plates are placed really close together, almost in the center of the glass-bulb. I only have seen Tungsram tubes having this structure..
BR
Rob
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