I don‘t know what the part number is of the tube in a Litton M2160. It‘s not an MX11769. The tube is non inverting. its an 18mm filmed gen 3 with a p-43 phosphor. I have not removed one from it‘s enclosure. there are three wires from the unit which are ground, +12, and a gain control which runs at about 8 vdc. I do not know the "MX" number. My mail and web browser are on different computers so the forum‘s mail system doesn‘t work for me. If you have other questions ask them here.
I think the tube in the Litton M2160 was designed for that housing, by the look of it. There‘s nothing to suggest it‘s a normal MX-type tube, though it does has a FOM of 1300 to 1600 according to the doco.
The PSU has three wires. Red=+12v, Black=Gnd. White is gain. You can run a 100 Kohm pot between 12v and Gnd and run the center tap off to white as a manual gain control. ( 0-12v ).
The tubes are quite narrow - almost like a scientific tube. About 10mm long.
They are non-inverting, as mentioned, but you can‘t fit them into any monoculars that I know of. Mainly due to the power supply.
If you‘re reasonably good with making stuff, you can use them as an upgrade tube for a Russian Baigish 5P, making a nice, tidy scope when you‘re done. Though you also need to wire up the reticle.
Oh, and I second John‘s comment. Ed is a great person and very helpful - Well worth contacting about your tube. I don‘t know of anyone who knows more about tube technology and how to service tubes... An exceptional fellow -
REPLIED: February 27 19:48:52, 2010 ( 00: AM PST )
Interesting description of that tube, until now, I’ve never heard of Litton tubes that use voltages above 3.0 VDC. Can you send me pictures of it and the area where the FO is separating from the rest of the tube? Thanks, Ed
Hi Ed,
Unfortunately, two topics got combined here.
The first one was the MX11769 that I PM‘d you about. The one with the large blob in the middle due to the MCP touching the Phospor screen or Photocathode. (When I posted I did not know that the Phosphor screen is deposited onto the FO inverter and was hoping that the blob was caused by separation of the FO)
The second topic was a question about a tube in a Litton NV camera. That is the one with the 12V power input.
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