Yes, but first you have to know which server blacklisted you and AFAIK the groups.io bounce warning doesn't tell you. Is there any way to get the information out of groups.io? D.

As I understand it this happens when your posts are sent out to the subscribers and some of the recipient's mail servers (typically run by their ISP) decide that they don't like your email address, or

The small ICs all over the 7A26 board are socketed. I would be inclined to suspect gain set components rather than the ICs themselves. David

OK I'll make some guesses. 1. Have you checked that the output level from the attenuators is correct (same both channels)? 2. Does the problem occur at other volts/div settings? 3. What frequency sign

Just go to <http://artekmanuals.com/manuals/tektronix-manuals/> and when it has finished loading just type 576 in the search box. Dave

Yeah well I bought it from the USA and paid a pretty penny for it and the postage :) D.

Yes well I do have a single page at a time scanner, but it's a PITA to scan > 1-2 pages as it doesn’t have a duplex autofeed.

I do have the later 576 Service Manual but lack the scanner ... David

Where on the planet are you? I might assume USA, but that might be rash ...

One thought might be (if we can) to limit the file size of the pictures that are posted - in almost all cases a 1024*768 (ish) will more than suffice - you don't need a monster 5k*2.2k (e.g.) image. I

And you can get a levelling head kit (no housing) for the SG504 from me ... David

I'm still wanting these if anyone can help. Thanks David

Please start a new thread about this - IOW please don hi-jack threads. David

IIRC some flexible couplers in the 576 have the be insulating up to the full voltage output of the 576. I know that because I needed to replace one and luckily Hakan Hintze had one on stock. David

You are in luck :) I have a 7T11 spares mule with the main timing knob intact - it is yours for the cost of postage. Would you like me to check out the cost of postage from UK to US? David

TekWiki < http://w140.com/tekwiki/wiki/File:062-053.pdf> At the bottom there's a bit that says "Pages that link to this page" and a highlighted link "Manuals" which takes me to a list of manuals. When

Hmmm when I go back to the manuals page and try to click on any of the pdf files for that manual or other manuals, I get a page that says: Login required Please login to upload files Dave

Isn't the picture of the contents of the grey box showing that? Or is there something else that should be there? David

What's more it appears in good condition, and it even has its test fixture box, but of course there's no manual. What's more an internet search hardly shows anything about it and certainly I couldn't

To a large degree this is why I didn't use a power head when developing my version of the SG504 Levelling Head. Instead I used a S6 sampling head in a 7S11 to measure the Vpp of the sine wave output f