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Still have the model 3 scope cart.? Model 203 is gone.? Still have 547 and plug-ins except 1a2.? Also have 2? ?M? ?4 channel? plug-ins.? 547 doesn't turn on.? Carl Hallberg (W9CJH)

I never paid it much mind in the past, but In playing with this old 7904 I notice that the numerical display on the CRT for the plug-ins is a bit bright. Is there a way to turn that brightness down a

It turns out that lack of -15V and yet some other problems are all caused by interconnect cables not seating properly / totally After I got my bearings straight on the power supply regulator board and

He has a ton of some of the best electronic content on You Tube. I have spent HOURS watching Alan explain various circuits and instruments. He is a wonderful teacher. -- Michael Lynch Dardanelle, AR

A tech reporter did something similar with the first Macbook Air he was to review. He put it in a manila envelope, admired that it fit, then set it aside. Out it went with the trash the next day.

I’m kicking myself because I ordered one in the previous run, got it, tested it, put it back in its envelope to await ordering and arrival of an appropriate case and power supply… …and then

Tayda has the chips. I'm fairly certain it's the ones used in it. Vince. -- Michigan VHF Corporation -- nobucks dot net K8ZW - http://www.hamradio.fun

Sorry, the latest batch has sold out. We will have more when we get more chips, but that's hard to predict. -- Bob Haas

seems to be sold out already! Wanted to get one, Jon

W2AEW has an excellent 19 minute video on youtube where he uses a variable bench power supply and an oscilloscope (Tek, of course) to demonstrate and measure characteristics of a tunnel diode; it's

Ordered one a minute ago, just because I like to support the museum. ;-) Going to see if I can come up with a nice enclosure for it. ??? Best of the holidays to all. -- Bruce Lane, ARS KC7GR

Another batch of the Museum's popular logo demo boards is available: https://www.ebay.com/itm/115151324085 Our supply right now is limited by the shortage of chips. Some sellers are quoting 70-week

Thanks, Walter. FYI: Also available on Tekwiki: https://w140.com/Ge1961TunnelDiodeManual.pdf Raymond

For those looking for a sophisticated and free schematic capture/pcb tool, KiCAD 6.0 just released. I downloaded it today and tested it (Ubuntu), so far it looks amazing, with huge libraries and a

The following files have been uploaded to the Files area of the [email protected] group. * /GE_Tunnel_Diode_Manual.pdf ( /g/TekScopes/files/GE_Tunnel_Diode_Manual.pdf ) *By:* walter

Worked just fine here. Thomas. man. 27. des. 2021 kl. 17:06 skrev KB2LMN <acurlik@...>: -- With Best regards, Thomas S. Knutsen. Please avoid sending me Word or PowerPoint attachments.

This topic has come up often, and it's clear not everybody has a curve tracer, but many have a need to know if the TD in their gear is good or bad. I just tripped (virtually) over a copy of the 1961

Shows as address invalid Andrew

Not much to interpret in terms of TDR in your pictures. Remember, a TDR shows impedance *discontinuities*. If you connect everything nicely terminated, there won't be much to see. Read your manual for

This is a very clear, informative and easy to understand video (as always with Alan). It makes you aware of what to expect and how to get there. https://www.youtube.com/watch?v=Il_eju4D_TM Raymond