I added the 177 Gen 3 clear knob to the album as well. Eric

OK sounds like you have the Late model knob. The earlier 1 light knob was dark with a glowing number through the paint. The Later knob was a clear skirt with a back lit number. Number was painted

I’ve posted image files to the TekScopes Groups.io <http://groups.io/> photo album entitled "Tektronix 577 V/Div and Step Gen knobs.” Unfortunately, the ambient lighting is poor (late afternoon

Thank for your reply Eric, I have the one light 177, but the skirt is almost "washed out" so I don't know what is in there. I made a test printing the image that has been posted on this forum and it

! Andy !  That would be awesome! I'll email you my address from my 'glomtek' account. So watch for that sender. It'll be me. I have PayPal linked to that account so I can send you money from

Hi Roger, There are 3 different layouts for the 177 vertical knob actually. There is the very old 2 light version. Then Tek moved to a single light version but there are 2 different layouts of that

Thanks a lot for the profuse references. Regarding my objective. In my audio amplification chain I have an active analog crossover which seems to be the source of noise. So for that reason I am

Hi Folks, I am in the process of trying to bring a 577/177 back to life. The CRT seems to be working and so is the step generator. There is a problem on the vertical circuit so it can only display

The following lists my findings and maybe some hints for others fighting with the tricky (but ingenious) construction of the Tek 504 while trying to repair it. The unit was dead - no lights, no

I found some of Steve Harris' work here: http://www.madsteveharris.co.uk/papers1.htm A Google search for John Dunn here: https://tinyurl.com/576erdpc turned up a different John Dunn who, amoung

I recently swapped the tube from a donor 5000, to fix my 577. I would be quite happy to send you the carcass of the 5000, for the cost of shipping. I can disassemble to reduce weight/size. Then this

Bonjour à tous I recall buying these CRTs in OEM mil boxes, ~$5 on Courtland St in NYC. I think P11 phosphor is highly actinic, for photo recording, high writing rate. the application was in

Hi, You are asking a question which is opposite to that usually asked; "I have a "XXX" scope which is missing its CRT, can anyone tell me what it used"? I'm afraid that Peter Keller's book makes no

That's great Tim. Thanks. Found the instructions pdf that includes all necessary parts. Dave

Dave; Hakan (Zenith) has the info on his site, in the 'Kits & Mods' section. The trickiest part is installing the bolts that hold the two halves together - the front bolts must be low-profile to clear

The measurement issue is well adressed by others. But the objective of your work is not clear to mme. In case you are building or designing a digital audio device or studio, suggest to see the

I have one in a parts machine. I tried to send you a PM and never got a response. Check your spam folder. If you still need one, contact me off list at: mlynch003 at yahoo dot com -- Michael

Sorry, who's Matt? There isn't a person named Matt in this thread...

What a great story. What do you think were the most interesting circuits you designed there? I was wondering why you mention scope ground. Are you saying I should use the TM3B and hook up a scope and

I'm looking through my 5440 instruction manual and looking at the instrument conversion/rack mounting instructions. It says field conversion kits are available. Well this is from the 70's, and I'm