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Here is an update: I checked the tube socket and it is clean as a whistle! The U550 in this scope failed a while back in that, the tripler section started blowing the fuse. Since this is not available

The shipping has now gone up. It's now $59.70. I used to want one of these printers and they were difficult to find but I think I'm over that now so I'll pass. But FWIW it appears to have both a

I'm looking for the GPIB interface board to one. Can swap for the RS232. Getting pens for these is pretty challenging, they're special for this plotter and the way it's designed you can't really use

For many years test equipment had minimal safety requirements. Newer equipment often has "sacrificial" resistors in parts of the circuit that also function as fuses. They often run hot and fail

Not sure how popular these HC100 still are - but the price is right... $15.00 plus shipping at $45. Here: https://www.ebay.com/itm/254637159546?hash=item3b498eb47a:g:CFYAAOSwd59e1~JH Not me by the way

Actually the manual says these are 0.125 watt. I'm not familiar enough with TRW resistors but that would indeed be under rated. So interesting to say the least. The actual power dissipation would be

Well a half watt would be good enough. I don't know the history of this unit. If you look closely you will see that someone was tweaking the pots. Could of been a slip of the probe.

True t’ing!! My Congressional campaign website got blacklisted by spamhaus in 2006 because one website on my provider Texas.net was forwarding SPAM. I switched to a more reputable provider

The cap cans themselves complete part of the circuits. What I'd do is to get the same value caps that will fit inside the empty cans (or on the bases). The cans can be cut open with a tubing cutter,

If I were in Portland... I'd pick them up. At least one of the tubes was made by the Electron Tube Corporation (an early maker... circa 1948... or multi-beam... CRTs and oscilloscopes... some with

Mark, Obviously this resistor is underrated in wattage. Something like 1 ow 2W would be better. If a resistor looks like this, it should be a higher wattage. I have seen this problem of a overstressed

Finally, it's all done, over 100 Tek mechanical and electro-mechanical items all photographed, identified and posted up on the stuff season page. There are some interesting bits there, from the skinny

So I confirmed that this amplifier should work normally when in the local mode. I also confirmed that this mod would only work on a 7704A with MOD 515C. Back to the problem... In general the unit had

Hi, I bought just the PS, and no scope with it, and yes I ran it on 230VAC, but in this 230VAC part of the world, it is usually the RIFA's in the net entrance that give problems. I already removed

Problem with spamhaus is it would appear that it only takes one email to them saying a domain is a spam source and they block it without investigation. ? D.

Groups IO sent me a message the other day complaining that my mailer was bouncing messages and they were suspending email until I unbounced it. Turned out my mailer was bouncing their mail because

I think you need to first create a new album and upload the photos separately. Then put a URL link to the photos or album in your message.

One important thing to remember is that CB channels below 24 are NEITHER contiguous nor numerically ordered. So to repurpose these switches, you might set up an LED matrix to show continuity per

To All - I did not post that link.? Dont know where that came from.? i have not posted anythin to this list for a few months. 73, Bill WA2DVU

I had to install the position potentiometer - it is missing - and therefore it must be the "upper and lower sreen switch" removed. No idea, how the removement works? No scew, nothing? I need your