If you are in the region affected by the flooding in Germany, Brussels, or The Netherlands pleased contact me (dennis at ridesoft dot com) if there is anything I can do or TekScopes can do to help. De

Yesterday was a really nice day. The temperature was perfect, the sun was out. I was on the deck of our little summer house working on my computer. In front of me across an inlet of Puget Sound I can

Hi Eric et al, Strange! I have three 7603s and NONE of them have a detent at the full CCW position. They just stop rotating at that point. Thanks for explaining to me that the switch allows the scope

Mystery solved. I found out where it is and how it works. The switch is on the end of the dual pot. It does not have a "detent" or mechanism to provide tactile feedback when the switch shuts off the r

I need help locating S102, Readout Intensity control On/Off switch on the 7603. I have probably owned or used at least 6 to 8 7603s and until now I never knew there was an on/off switch for the readou

Hi Albert, First: what is HAPG? Second: that was an excellent suggestion to try feeding it a signal from a SG503 to see how it behaves with higher frequency signals. The SG503 only goes up to 250MHz.

Hi Ed, Thanks for the suggestions. I haven't tried it with slower pulses of square waves. That might give me a clue to the origin of this signal. When I get a chance I will give this a try. "Ringing"

#photo-notice

Hi Richard, WOW!!! YOUR NOTES ARE ASTOUNDING! https://groups.io/g/TekScopes/files/7S12%20in%207934/7S12%20in%207934%20v2.pdf I have never seen anything that even comes close to the notes you placed in

I have been testing a P6302 50MHz Current Probe just given to me by one of our members. It is connected to an AM503B I inherited from someone who got it cheap because it had a number of intermittent "

Hi Liam, I believe you meant to say "P6019 probe", not "P6109 probe". Anyone who is interested in this current probe please contact Liam OFF-LIST at Hifi at telus dot net. Dennis Tillman W7pF

Hi Snapdiode, WOW! Beautiful photographs! Beautiful job de-potting the head! Amazing X-Rays! I am extremely impressed with the job you did dissecting the P6302 head. It is truly unfortunate that this

Hi Jean-Paul, I understand the physics of the incandescent bulb Tek uses. I have many spares of all of the incandescent Tek put into their scopes, plugins, TM500 instruments etc. So I have no problem

Hi Jeff, I think Zenith wrote about this here (https://groups.io/g/TekScopes/topic/7657272#128805) as Albert just pointed out to me in his reply to my question. I now think it is likely P6302 probes d

Hi Albert, Zenith (Håkan Hintze) is almost certainly correct. He has always been an excellent source of Tektronix documentation, and information that cannot be found anywhere else. Håkan has scanned a

Hi Jeff, Yes, it is simple to add an external bench power supply for the heater. Then you don't need anything else at all except an amplifier for the grid voltages coming from the curve tracer that ta

Hi Twig, This is not breaking protocol at all. This is exactly the opposite. It is extremely good timing for me since I just posted several P6302 questions I had and one of them is about the same sort

Hi Eric, Can you take some pictures of what you did, and put together a little write-up of how you did it? What type of LEDs you used? Where you got them if they were unusual? etc. I would love to do

Hi Jeff, About 5 years ago I created a little adapter that, when combined with a tube tester, enabled any Tek curve tracer (575, 576, 577, 7CT1N, 5CT1N, and Telequipment CT-91) to test all tubes (rect

I don't know the right questions to ask about the Hall Effect devices used in Tek's current probes like the P6042 and the P6302 but I am struggling to understand if they are the reason I can get these

Has anyone tried replacing the incandescent lights that illuminate the internal graticule of scopes like the 7000 series mainframes with LEDs? The most common arrangement on the 7000 scopes is three l