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-   -   Help me to identify unknown tube (http://www.diyaudio.com/forums/tubes-valves/116166-help-me-identify-unknown-tube.html)

Milen 25th January 2008 04:22 PM

Help me to identify unknown tube
 
http://www.postimage.org/aV1eYZlJ.jpg http://www.postimage.org/aV1eZxgJ.jpg

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...

jnb 25th January 2008 09:06 PM

Looks somewhat like a dual diode.

Milen 25th January 2008 09:09 PM

Yes, it is dual diode...

Wavebourn 25th January 2008 09:41 PM

Looks like German socket.
AZ36?

I never heard of such tube. May be AZ11?

http://www.pocnet.net/hobby/bastel/k...fotos/az11.jpg

Edit:
Here is some interesting document:

http://www.radiomuseum.org/forumdata.../RCRcmpl%2EPDF

dhtrob 26th January 2008 07:42 AM

I am almost sure it is an AZ4. This one has a P-socket and has abot the same ratings as a RGN2004.
BR
Rob

jnb 26th January 2008 10:43 AM

Hoping this may help.

AZ4

showdown 26th January 2008 10:58 AM

Looks a LOT like the AZ4 I have here...

dhtrob 26th January 2008 01:48 PM

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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