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--- In TekScopes@..., "Rob" wrote: > > Really nice. Once again the depth and team spirit of this forum shines. > > > > Curious?€?. The specification indicates that the scope can take

In 1970 my brother in law was in a head on collision at 70 mph, he had a 453 in the back of the station wagon, there was a heavy stamped steel protective barrier behind the front seat.? The 453

Did you look at First Class Mail International? I think the limit is 4 pounds max. There is no tracking and you have to take it to the post office to mail, no option to print out postage label on

About the cheapest international shipping for the US is the post office's small flat rate boxes.... About $16 anywhere in the world. You are allowed about 4 lbs. -Chuck Harris Dave C wrote:

If you do work on the tunnel diodes, be sure to use a heat sink right up against the diode body. Ge tunnel diodes are easily ruined with heat. However, I think David's comments are more likely the

Probably not. Going from what I had on 465Bs the triggering problem is often that the tunnel diodes have changed in value. There are many! threads about this in the archives. It may be worth your time

The 475 trigger pickoff circuit is significantly different than the 468 circuit. From your description, something is wrong with or around U370 on schematic 3. Take a close look at R403 which if open

I'm looking to purchase some ASIC replacement modules. The warranty is good (90 days) but -- as you'd expect -- I'm responsible for return shipping. Shipping from China is, I presume, subsidized by

<david.partridge@...> wrote: You are not kidding about the calibration but from what I have read on the list in the past, they are easier to deal with than the older sampling sweep

That's around the price I was thinking. I just offered $200 (with free shipping) on a PG 506 and was accepted, so I've got one of those. Now I just need an SG503...

Hi, Ant chance you get to obtain one of those items for less than $200 is an opportunity. I recently bought a 067-0587-01 standardizer for $150 not because I needed one but because the price was low

I have an ancient 475 scope which works fine with an external trigger, but will not trigger on any of the internal sources. Should I start by reviewing the recent 468 triggering issue thread to get me

Anyone selling one of these for a reasonable amount? Prices on eBay do not seem reasonable to me, but maybe my calibration is off... Feel free to contact me off list

How do you know the generator's amplitude is flat ? It may not be. Be aware that some scopes have a reduced bw spec at the higher sensitivities. Use RG-58, not RG-59 HankC, Boston

Hi Goran, Yes they are quite the devil to calibrate, however in this case the front panel position control is maxed to the right and the sweep cal is almost all the way clockwise, and the slewing

Thank you Ray and David and Alan. I was unknowingly testing the response of the 20MHz filter and looks like it meets spec :-) Disengaging the 20MHz filter yields more reasonable results. At 100MHz,

As others have stated, be sure to use a 50ohm coaxial jumper, a thru termination if you have one, and be sure that the 20MHz BW limit switch isn't turned on. Beyond that, there have been some scopes

Using 50 ohm cable or adding an attenuator like Tom suggests would give better results but I do not think that is the problem in this case. Having a -3dB point at 20 MHz is awfully suspicious. Is

Steve, I don't have a 2235 but my 465 has a "20 MHz bandwidth" filter on the input. If the 2235 has something similar, make sure it is not engaged. If not: The standing wave ratio for your test

Hi, RG59 is 75ohms. That may be your problem. Use RG58. Jerry Massengale