How to tell what type of tube you have - Page 8

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How to tell what type of tube you have (Page 8 of 15)

norbs79 Member Joined Sep 2014 Posts 531 EE 100% (20) NH, USA	Posted: 3/25/2017 8:02:34 PM EST [#1] Quote History Originally Posted By mrnuke: A little help identifying this tube and roughly what it's worth? http://i43.photobucket.com/albums/e378/mrnuke34/Mobile%20Uploads/40B19D79-7659-4D32-ADC6-EC8BE976FA30.jpg View Quote My guess is a ITT/Harris OMNI VIII Autogated, mil spec. Do yourself a favor and edit out the serial number.

mrnuke I love them NASCARS Joined Jan 2006 Posts 1157 EE 100% (54) NC, USA	Posted: 3/25/2017 9:38:09 PM EST [#2] Quote History Originally Posted By norbs79: My guess is a ITT/Harris OMNI VIII Autogated, mil spec. Do yourself a favor and edit out the serial number. View Quote Got it and thanks!

awptickes Member Joined Jul 2012 Posts 5116 EE 100% (13) MD, USA	Posted: 3/26/2017 12:43:33 PM EST [#3] Quote History Originally Posted By mrnuke: Got it and thanks! View Quote ITT, omni viii, made around Feb 10, 2012. Delivered to PEO Soldier. PY1 - IMAGE INTENSIFIER TUBES - MX-11769

mksleep Joined Jan 2017 Posts 5 EE 0% (0) DEU	Posted: 3/28/2017 3:38:44 PM EST [#4] What about them? Must be Omni 5 non gated? But the contract confuses me. Housing: MX10160A/AVS-6 Cage: 13567 Contract: W91CRB-09-D-0079/0004 Contract: W91CRB-09-D-0079/0012 CAD: 1105 CAD: 1126 ID No: 80063-A3256389 What about the quality of that tubes?

awptickes

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Posted: 3/29/2017 1:22:38 PM EST

[#5]

Quote History

Originally Posted By mksleep:
What about them? Must be Omni 5 non gated? But the contract confuses me.

https://abload.de/img/2017-03-28-photo-0000t6ulu.jpg

Housing: MX10160A/AVS-6
Cage: 13567
Contract: W91CRB-09-D-0079/0004
Contract: W91CRB-09-D-0079/0012
CAD: 1105
CAD: 1126
ID No: 80063-A3256389

What about the quality of that tubes?

View Quote

They're Omnibus VII contract purchases, ITT Corporation was the awardee, top tube was ordered on Delivery Order 0004, bottom tube ordered on DO 0012. Delivered to the department of the Army. That contract was an interesting one -- it caused the complaints. It was all for ANVIS tubes.

0004 was issued July 27, 2010 and all goods were accepted by December 20, 2010.
0012 was issued April 01, 2011 and all goods were accepted by May 1, 2011.

They're both Aviation tubes, but not even close to the same manufacture date. How do they look?

Kronoloctipus22

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Posted: 3/29/2017 6:14:07 PM EST

[#6]

Quote History

Originally Posted By Kronoloctipus22:
Yes, I was wondering if you guys could please help me identify these PVS-7 tubes I have. I will list the information for them below. Thank you in advance!

1. MX-10130D/UV
NSN: 5855-01-504-4589
CAGE: 13567
ID NO: 80063-A3297300
CONTR NO: W9124Q-05-D-0821
CAD: 1051

2. MX-10130D/UV
NSN: 5855-01-504-4589
CAGE: 13567
ID NO: 80063-A3297300
CONTR NO: W9124Q-05-D-0821
CAD: 1228

3. MX-10130D/UV
NSN: 5855-01-504-4589
CAGE: 13567
ID NO: 80063-A3297300
CONTR NO: W9124Q-05-D-0821
CAD: 1228

4. MX-10130D/UV
NSN: 5855-01-504-4589
CAGE: 13567
ID NO: 80063-A3297300
CONTR NO: W15P7T-04-A-J208
CAD: 1012

5. MX-10130D/UV
NSN: 5855-01-504-4589
CAGE: 13567
ID NO: 80063-A3297300
CONTR NO: W15P7T-04-A-J208
CAD: 1132

6. MX-10130D/UV
NSN: 5855-01-504-4589
CAGE: 13567
ID NO: 80063-A3297300
CONTR NO: DAAB07-02-C-J009
CAD: 0449

7. MX-10130C/UV
NSN: 5855-01-380-5098
CAGE: 55311
ID NO: 80063-A3187450
CONTR NO: W9124Q-05-D-0823
CAD: 0921

8. MX-10130D/UV
NSN: 5855-01-504-4589
CAGE: 13567
ID NO: 80063-A3264326
CONTR NO: DAAB07-98-C-J419
CAD: 0146

View Quote

No one can help me??

mksleep

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Posted: 3/30/2017 11:05:50 AM EST

[#7]

All are 43mm non inverted tubes (like for all PVS7)

1. ITT Omni 7 Build: 51 week 2010
2. ITT Omni 7 Build: 28 week 2012
3. ITT Omni 7 Build: 28 week 2012
4. ITT Omni 6 Build: 12 week 2010
5. ITT Omni 6 Build: 32 week 2011
6. ITT Omni 6 Build: 49 week 2004
7. Litton Omni 7 Build: 21 week 2009
8. ITT Omni 5 Build: 46 week 2001
.
Just check http://www.ar15.com/forums/t_6_18/317705_.html for the contracts. With NSN+Cage you mostly can find the manufacturer

Regards

Kronoloctipus22 Joined Mar 2017 Posts 3 EE 0% (0) TX, USA	Posted: 3/30/2017 12:06:16 PM EST [Last Edit: Kronoloctipus22] [#8] Thank you! I've been to the link you posted I just don't understand how to read it. How do you tell whether they're gated or not. Or thin film?

mksleep Joined Jan 2017 Posts 7 EE 0% (0) DEU	Posted: 3/30/2017 3:56:47 PM EST [#9] All omni 7 will be thinfilm autogated Omni 6 will be autogated (I think thinfilm aswell, but not 100% sure) Omni 5 should be non gated.

FunkyTownAggie Joined Oct 2015 Posts 53 EE 100% (31) TX, USA	Posted: 4/19/2017 12:34:46 PM EST [#10] What can you tell me about this tube? MX-11769/uv ID NO 80063-A3256350 NSN 5855-01-444-3916 S/N CAD 0722 MFR 13567

awptickes Member Joined Jul 2012 Posts 5182 EE 100% (13) MD, USA	Posted: 4/19/2017 8:01:01 PM EST [#11] Quote History Originally Posted By FunkyTownAggie: What can you tell me about this tube? MX-11769/uv ID NO 80063-A3256350 NSN 5855-01-444-3916 S/N CAD 0722 MFR 13567 View Quote ITT Manufactured, 22 week of 2007. No contract number on it?

FunkyTownAggie Joined Oct 2015 Posts 55 EE 100% (31) TX, USA	Posted: 4/19/2017 8:37:22 PM EST [#12] Quote History Originally Posted By awptickes: ITT Manufactured, 22 week of 2007. No contract number on it? View Quote I guess I didn't get that recorded when it was opened. Would it be Omni vii like specs or could it be something else?

awptickes

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Posted: 5/13/2017 10:12:02 AM EST

[#13]

Quote History

Originally Posted By FunkyTownAggie:

I guess I didn't get that recorded when it was opened. Would it be Omni vii like specs or could it be something else?

View Quote

It could be anything from a stellar quality aviation/special purpose tube to a dogshit-grade tube. Not all tubes delivered under a contract meet the contract delivery order minimums, as each delivery order specifies the test quantity per lot. Even knowing that it's an Omni VII tube won't tell you specs of the specific tube, just that it *might* have met similar specifications.

flo1969 Joined Dec 2014 Posts 16 EE 0% (0) DEU	Posted: 5/17/2017 12:48:21 AM EST [#14] What can you tell me about this tube? ITT F9855A. NATO Stock Number: Z7 5960-99-087-8717 Cage No. 13567 MFG 9719 This tube has been produced for the Thales Kite system. I would be interested if it is shot-resistant up to 308.

awptickes

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Posted: 5/17/2017 7:52:36 AM EST

[#15]

Quote History

Originally Posted By flo1969:
What can you tell me about this tube?
https://abload.de/img/ittf9855asmallzhyh9.jpg

ITT F9855A.
NATO Stock Number: Z7 5960-99-087-8717
Cage No. 13567
MFG 9719

This tube has been produced for the Thales Kite system.
I would be interested if it is shot-resistant up to 308.

View Quote

Documentation on Qioptiq's site says it's good on 7.62 systems, but, uh, I dunno if I'd use it on a 7.62 weapon unless it's in the KITE optic.

Non-US-Military NV is out of my wheelhouse.

flo1969 Joined Dec 2014 Posts 17 EE 0% (0) DEU	Posted: 5/17/2017 12:15:26 PM EST [#16] Thanks bro. This is at least an interesting point of reference.

austinlang2016 Joined Feb 2017 Posts 30 EE 100% (2) GA, USA	Posted: 5/23/2017 3:13:13 PM EST [#17] Can someone tell me how old this tube is and it's Omni by chance?[/URL]" />

awptickes

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Posted: 5/23/2017 8:20:26 PM EST

[#18]

Quote History

Originally Posted By austinlang2016:
Can someone tell me how old this tube is and it's Omni by chance?http://i349.photobucket.com/albums/q365/cobbgold1/IMG_3307_zps7dlaidqk.jpg" target="_blank">https://s349.photobucket.com/user/cobbgold1/media/IMG_3307_zps7dlaidqk.jpg.html]http://i349.photobucket.com/albums/q365/cobbgold1/IMG_3307_zps7dlaidqk.jpg[/url]

View Quote

Nope. That's not a military contract tube.

That's a civilian tube. It's 11769 form factor, that's about all I can tell you.

What's it look like?

Harmo2b Joined Jun 2017 Posts 2 EE 0% (0) FRA	Posted: 6/1/2017 1:22:28 AM EST [Last Edit: Harmo2b] [#19] Thanks

byou79 Joined Jan 2015 Posts 578 EE 100% (80) VA, USA	Posted: 6/6/2017 3:35:25 PM EST [Last Edit: byou79] [#20] Can someone provide info/details on the following? NVG n00b here. Edited. Info found.

falcom Joined Aug 2004 Posts 321 EE 100% (35)	Posted: 6/7/2017 7:04:56 PM EST [Last Edit: falcom] [#21] Since it is Litton Electro Optical Systems which changed in 2001 I am guessing this is Omni 5 or 6

awptickes

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Posted: 6/13/2017 5:38:17 PM EST

[#22]

Quote History

Originally Posted By falcom:
Since it is Litton Electro Optical Systems which changed in 2001 I am guessing this is Omni 5 or 6

http://i1201.photobucket.com/albums/bb345/falcom5000/litton/m890.jpg

View Quote

Wrong. It's not an Omnibus purchased tube. "Omnibus $num" is the name of the DoD contract under which Electrooptical devices are procured.

If someone sold you that while calling it Omni ANYTHING, they ripped you off. That tube is a straight up civilian market device.

falcom Joined Aug 2004 Posts 326 EE 100% (35)	Posted: 6/15/2017 1:47:32 PM EST [#23] I know that. I was trying to figure an approximate production date since the manufacture dates of a tube somewhat matches the available technology and specs. Available technology parallels Omni contracts.

chosos Night Vision Addict Joined Sep 2009 Posts 1606 EE 100% (243) MI, USA	Posted: 6/17/2017 1:39:41 PM EST [Last Edit: chosos] [#24] I don't think that applies though. Current tubes can still have varied specs depending on commercial vs mil spec tubes. UNV was selling some comspec filmless tubes that are brand new and they weren't gated and I just figured all newer tubes would be coming out autogated.

AG25 Joined Jun 2017 Posts 1 EE 0% (0) ON, CAN	Posted: 6/21/2017 1:01:23 PM EST [Last Edit: AG25] [#25] Looking for contract, or if anyone can help me decipher this tube: nvm...

jadamsnginfantry Joined Mar 2015 Posts 207 EE 100% (18) AZ, USA	Posted: 7/7/2017 2:36:02 PM EST [#26] How about this one? KM 273296-26 S/N 776626 DC 04 18

awptickes

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Posted: 7/14/2017 8:31:36 AM EST

[Last Edit: awptickes] [#27]

Quote History

Originally Posted By jadamsnginfantry:
How about this one?

KM 273296-26
S/N 776626 DC 04 18

https://i.imgur.com/LluOenz.jpg

View Quote

DC 0418 tells that it's non-autogated, model number tells that it's civilian F9800N tube. Made in 2004, thin-filmed. It's the first thin-filmed model that ITT made, but 8 years after they sold the first thin-filmed ones to the military.

murtis

Joined May 2014
Posts 899
EE 0% (0)

FIN

Posted: 7/14/2017 10:21:26 AM EST

[#28]

Quote History

Originally Posted By awptickes:

DC 0418 tells that it's non-autogated, model number tells that it's civilian F9800N tube. Made in 2004, thin-filmed. It's the first thin-filmed model that ITT made, but 8 years after they sold the first thin-filmed ones to the military.

View Quote

Wait a minute, doesn't the early 2000 F9800 series include thin film Pinnacle tubes too? I though I had one from 2003, F9800AG.

awptickes Member Joined Jul 2012 Posts 5341 EE 100% (13) MD, USA	Posted: 7/14/2017 10:25:56 AM EST [#29] Quote History Originally Posted By murtis: Wait a minute, doesn't the early 2000 F9800 series include thin film Pinnacle tubes too? I though I had one from 2003, F9800AG. View Quote F9800ag is an autogated tube... The one pictured is most definitely not an autogated tube, and is a f9800N

murtis

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FIN

Posted: 7/14/2017 10:27:37 AM EST

[#30]

Quote History

Originally Posted By awptickes:

F9800ag is an autogated tube... The one pictured is most definitely not an autogated tube, and is a f9800N

View Quote

True, was just wondering about ITT providing first thin films around 2004 as you said. But I might have misread what you said, the AG might not be a civilian model. This is off topic, sorry for that, wasn't speaking of the N tube.

awptickes

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Posted: 7/14/2017 2:10:38 PM EST

[#31]

Quote History

Originally Posted By murtis:

True, was just wondering about ITT providing first thin films around 2004 as you said. But I might have misread what you said, the AG might not be a civilian model. This is off topic, sorry for that, wasn't speaking of the N tube.

View Quote

I believe the first thin-filmed tubes were 1996, but I do know that the f9800 was the first released itt tube model to utilize thin-filmed technology.

GripnAK47s FHRC Joined Oct 2008 Posts 4155 EE 100% (1843) USA	Posted: 8/10/2017 5:11:25 PM EST [Last Edit: GripnAK47s] [#32] This is the only pic I have. Anyone know what this is? Im told its auto gated non gain...but dont know what Omni... Also I read above that 0418 means non autogated? itt 272069-8 S/N xxxxx DC-0918 Edit: Thanks!

awptickes

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Posted: 8/15/2017 11:54:29 AM EST

[#33]

Quote History

Originally Posted By GripnAK47s:
This is the only pic I have. Anyone know what this is? Im told its auto gated non gain...but dont know what Omni...
Also I read above that 0418 means non autogated?

itt 272069-8
S/N 659592
DC-0918

http://i.imgur.com/1Cy8A0R.jpg

View Quote

https://www.ar15.com/forums/t_6_18/378870_tube_id.html

Thin film, non-autogated, mfg'd 18 week of 2009. Civilian tube.

GripnAK47s FHRC Joined Oct 2008 Posts 4212 EE 100% (1843) USA	Posted: 8/16/2017 1:56:20 PM EST [Last Edit: GripnAK47s] [#34] ^You are awesome bro, thanks for all the help!! Heres a new one a PVS7 tube:

awptickes

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Posted: 8/31/2017 12:31:18 PM EST

[#35]

Quote History

Originally Posted By GripnAK47s:
^You are awesome bro, thanks for all the help!!

Heres a new one a PVS7 tube:
http://i.imgur.com/qq9wbik.jpg

View Quote

MX10130D/uv:
pvs7 gen3 thin film tube.

CAD 0640:
40th week of 2006

Contract Number W15P7T04AJ208 Details Here

Made by Harris/ITT. Looks like it was an Omni VII tube, probably very clear all the way out to the edges with good gain figures.

How does it look?

GripnAK47s

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Posted: 8/31/2017 1:07:05 PM EST

[#36]

Quote History

Originally Posted By awptickes:

MX10130D/uv:
pvs7 gen3 thin film tube.

CAD 0640:
40th week of 2006

Contract Number W15P7T04AJ208 Details Here

Made by Harris/ITT. Looks like it was an Omni VII tube, probably very clear all the way out to the edges with good gain figures.

How does it look?

View Quote

Thanks so much! It looks like a great tube!
Quick crooked shot from a cellphone:

PeepEater The Marksman Joined Dec 2009 Posts 32261 EE 100% (2) SOM	Posted: 9/4/2017 8:38:28 AM EST [Last Edit: PeepEater] [#37] Nevermind, found it online. Looks like it was an old ITT tube
	"Imposing a totalitarian regime on a whole people depends on the leader first collecting round him a group which is prepared to submit to that which they are to impose by force " ~F.A. Hayek.

Melvin_Johnson Member Joined Dec 2001 Posts 7272 EE 100% (88) AZ, USA	Posted: 9/13/2017 4:09:37 PM EST [#38]

HK_MARK23 Joined Jul 2007 Posts 810 EE 100% (18) TX, USA	Posted: 9/13/2017 4:19:59 PM EST [#39] One mo again, since I got no love before. Any info on this one? TIA!

awptickes

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Posted: 9/14/2017 3:13:58 PM EST

[#40]

Quote History

Originally Posted By Melvin_Johnson:
https://www.AR15.Com/media/mediaFiles/18199/20170913_170021-306736.jpg

View Quote

Nice humble brag. Lol. Foreign tubes aren't my wheelhouse.

I'd put it at about the performance of recent (10 years ago) US gen3 Image Intensifiers, even though the gain figures are waaaaaaaaaaaaay low. It's probably a nice looking tube. Supposedly it's only 350nm-900nm responsive? Huh?

http://www.alpha-photonics.com/product_info.php?language=en&products_id=147

Melvin_Johnson

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Posted: 9/14/2017 3:29:58 PM EST

[Last Edit: Melvin_Johnson] [#41]

Quote History

Originally Posted By awptickes:

Nice humble brag. Lol. Foreign tubes aren't my wheelhouse.

I'd put it at about the performance of recent (10 years ago) US gen3 Image Intensifiers, even though the gain figures are waaaaaaaaaaaaay low. It's probably a nice looking tube. Supposedly it's only 350nm-900nm responsive? Huh?

http://www.alpha-photonics.com/product_info.php?language=en&products_id=147

View Quote

Autogated Gen 2+ tube in the XD4 format. I think the CH suffix is the code for auto gating.

Interestingly the gating only kicks in when the device is pointed at a bright light. Otherwise the tube emits no telltale hum. Maybe all the newer gated stuff does this?

It isn't their high end but it is a step up from their COMSPEC or whatever they call the bare bones tube.

Here's a photo with about half moon illumination.

actross Joined Sep 2017 Posts 1 EE 0% (0) USA	Posted: 9/15/2017 9:28:34 AM EST [#42] Hi there, I have the chance to buy the following tube. It's hard to find more details of the tube. Can somebody help me? KM 272069-8 S/N 751256 DC 0407 I think 0407 is 2004 the 7th week, right? S/N = serial number? Is the tube shock resistent? Many thanks in advance

awptickes

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Posted: 9/15/2017 10:17:27 AM EST

[#43]

Quote History

Originally Posted By actross:
Hi there,

I have the chance to buy the following tube. It's hard to find more details of the tube. Can somebody help me?

KM 272069-8
S/N 751256
DC 0407

I think 0407 is 2004 the 7th week, right?
S/N = serial number?
Is the tube shock resistent?

Many thanks in advance

View Quote

f9800 SELA (Select, Alpha), ITT thin film, no autogating.

Your date is right, looks like it was probably one of those ENVIS SERE monocles... The ones that had a semi-transparent housing, lol.

actross

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Posted: 9/15/2017 11:25:17 AM EST

[#44]

Quote History

Originally Posted By awptickes:

f9800 SELA (Select, Alpha), ITT thin film, no autogating.

Your date is right, looks like it was probably one of those ENVIS SERE monocles... The ones that had a semi-transparent housing, lol.

View Quote

@ awptickes: Many thanks you saved my day

The seller told my it is a filmless L3. I couldn't believe. So now I know the truth! Many thanks :-)
The picture I receive show - I think - a metal housing. The numbers are engraved.

My understanding is that the shock resistance of thinfilm tubes is ok. They could be used for weapon sights. Is it right?
Could you give my some data as S/N, FOM or lp/mm out of my numbers?
Can f9800 SELA be translated as MX10160?
My understanding is that selected Alpha are very good ones?

awptickes

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Posted: 9/15/2017 7:52:02 PM EST

[#45]

Quote History

Originally Posted By actross:

@ awptickes: Many thanks you saved my day

The seller told my it is a filmless L3. I couldn't believe. So now I know the truth! Many thanks :-)
The picture I receive show - I think - a metal housing. The numbers are engraved.

My understanding is that the shock resistance of thinfilm tubes is ok. They could be used for weapon sights. Is it right?
Could you give my some data as S/N, FOM or lp/mm out of my numbers?
Can f9800 SELA be translated as MX10160?
My understanding is that selected Alpha are very good ones?

View Quote

There's no way to infer actual specs out of the tube serial number short of hooking it up to a test set. It's probably close to somewhere between omnibus 6 and omnibus 7 specifications, but there's no way to tell without testing.

You can't translate a civvy tube to a mil contract tube, because they're totally different animals. Without a spec sheet who knows what's actually in it.

How does it look?

actross

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Posted: 9/16/2017 3:31:28 AM EST

[#46]

Quote History

Originally Posted By awptickes:

There's no way to infer actual specs out of the tube serial number short of hooking it up to a test set. It's probably close to somewhere between omnibus 6 and omnibus 7 specifications, but there's no way to tell without testing.

You can't translate a civvy tube to a mil contract tube, because they're totally different animals. Without a spec sheet who knows what's actually in it.

How does it look?

View Quote

Many thanks for your quick answer.

Following a pic of the KM tube. In my opinion it is a 2004 tube.:

Here are 2 pics of another tube (ITT 272692-35 DC 0803) I can get. I think the tube is much better. After reading a lot in this forum I think it is a MX-10160C ITT autogated tube from 2008. Is it right???
Do the sound of the autogated tube annoying? I want to use the tube in a Mini14. Do you know if the tube is shock resistant?
Which tube should I choose?

awptickes

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Posted: 10/3/2017 11:52:49 AM EST

[#47]

Quote History

Originally Posted By actross:

Many thanks for your quick answer.

Following a pic of the KM tube. In my opinion it is a 2004 tube.:

http://up.picr.de/30369689ly.jpg

Here are 2 pics of another tube (ITT 272692-35 DC 0803) I can get. I think the tube is much better. After reading a lot in this forum I think it is a MX-10160C ITT autogated tube from 2008. Is it right???
Do the sound of the autogated tube annoying? I want to use the tube in a Mini14. Do you know if the tube is shock resistant?
Which tube should I choose?

http://up.picr.de/30369687qy.jpg

http://up.picr.de/30369688sy.jpg

View Quote

Both of those are non-autogating tubes. Neither are mx-10160c tubes because they're non-autogating, they are, however, mx-10160 form-factor, if you want to call it that. The DC designation tells me they're not autogated power supplies. They're both F9800 civilian tubes made by ITT. You're reading the date codes correctly. I'd suspect these are just civilian tubes, and probably don't have the shock resistance you're looking for.

Military contract tubes are more my wheelhouse.

Dandman3039 Joined Oct 2017 Posts 1 EE 100% (2) VT, USA	Posted: 10/16/2017 10:40:56 PM EST [#48] Trying to get some more detail on this tube before I buy it as my first pvs-14 build. It's blemished, but seems like a good starting place on a budget. MX-11769/UV ID NO. 80063-A3297320 NSN 5855-01-504-4590 CAD 0810 MFR 13567 CONTR. NO. W9124Q-05-D-0821

norbs79 Member Joined Sep 2014 Posts 582 EE 100% (20) NH, USA	Posted: 10/17/2017 9:46:05 AM EST [#49] Quote History Originally Posted By Dandman3039: Trying to get some more detail on this tube before I buy it as my first pvs-14 build. It's blemished, but seems like a good starting place on a budget. MX-11769/UV ID NO. 80063-A3297320 NSN 5855-01-504-4590 CAD 0810 MFR 13567 CONTR. NO. W9124Q-05-D-0821 View Quote ITT OMNI VII thin film autogated

JackalThe

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Posted: 10/23/2017 5:46:12 AM EST

[#50]

Hi gents
I am new here and already have some questions.
I've just picked up some interesting nv (ENVIS M703E) for relatively good price and i want to identify tube, that is in it.
I've made some research and found information, that most tubes in this units were F9800N from ITT or M890 from L3.
I think that this one is L3 M890, but not sure. I've also didn't find any specs of this M890 tubes, that were used in ENVIS M703E.

Also I've found some blemish on screen that i cant identify. Spots are pretty normal in this devices, but this looks like dying photocathode (dark area on the edge of image with distinct borderline), BUT it is visible even if the unit is OFF!
I don't think, that photocathode damage will be visible thru entire tube, to the screen when tube is off.

Sorry for crappy photo.
Please help.
Thanks a lot for any advise.
A

https://imgur.com/a/FFDLi

https://imgur.com/a/ACqu3

https://imgur.com/a/O4NmW

https://imgur.com/a/JuJci
number is: 100243524

https://imgur.com/a/C6edH

https://imgur.com/a/nb7da

How to tell what type of tube you have (Page 8 of 15)

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