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I'd cut and paste the Spanish text into an online Spanish-to-English translator, or, if the text is on a website, as you indicate, use Google translator on that page. DaveD KC0WJN

I see what you mean. In that case, I won't cloud the issue with any more suppositions. I'd be interested in seeing if you find any clarification on it. Thanks, Barry - N4BUQ

I added more photos. All the other positions match except ch1

I have a 495 spec analyzer with a phase lock failure. Theres a post on this cite in spanish that was a fix. Is there a translator on this cite? I havent explored other apps yet.

If that's the case, then it appears that agrees with CH1. The contacts are listed in 4123 order in the manual so it appears that is the position for CH1. Barry - N4BUQ

The one in the manual has 4 switch contacts because the first one is the power contact that is omitted in the mode select section. The first contact appears in the powersupply section. Ignore the 1st

The manual shows four switch contacts but the switch in the picture appears to have five. That seems incorrect. Thanks, Barry - N4BUQ

So my SC502's mode contact switch positions doesn't 100% match the ones in the manual. Ch1 switch config should be 01100 according to the manual. But for me, the actual switch contact is 01001. Can

Hi Glenn, As to U241, the internal gates are just used as inverters by tying the inputs together, so NAND or NOR makes no difference here. Each is a drop-in replacement for the other in this case; no

On Wed, May 1, 2024 at 06:54 PM, Glenn Little wrote: Hi Glenn, Unfortunately, replacing the "74S..." series logic gates is almost always a lottery win. In circuit design, normally, the 74S series is

For anyone wondering, it's fixed and the problem was caused by bad resistors in the focus circuit. R3-R4-R5 were all significantly out of spec. I replaced R1 and R2 while I was there. I added a

<clarkfoley@...> wrote: This panned out, thanks! Still passively looking for a K217 for my DSA602. > > >

If you're not in the area you can have it shipped, though if it is shipped, I cannot guarantee it's operation upon arrival. I will do my best to pack

Try VintageTek Museum Dave Wise

Hi All, I have an old Tek Model 502 that is missing two of it's cover latches. These are the older latches that have a screw, anti-rotation washer, and plastic flat wingnut. One of them also needs a

I recently bought a FG503 at a hamfest that was in non working condition. The serial number of this unit is in the high range. The parts layout agrees with the low range parts layout. The board does

I have put this on the back burner for now, thanks again for all the help!

https://tucson.craigslist.org/ele/d/tucson-tektronix-scope-carts/7736056433.html I did not check models but it is in your backyard.

Hi Kevin, I would highly recommend that you try Craigslist for Scope carts. They come up fairly regularly and if you have an account with them you can set up alerts. Here is one (though it's not one

It's interesting that the RM564B HAS a fan. My 564B doesn't have a fan, and a check of the 564 manual doesn't show a fan, even though it's full of hollow state heat sources. I guess I should keep in