Someone recently mentioned they were getting used to Yahoo NEO and were starting to like it. Well, I've just spent a long time trying to see my groups (this group in particular) and while my group lin

Come on, look on the bright side. Perhaps he can't speak English. Happy New Year. Don Black. This email is free from viruses and malware because avast! Antivirus protection is active.

If we're serious for a minute and take a flight into fancy (is that an oxymoron?), the only obvious circuit with just the tubes is a triode (or pentode perhaps) using the input pot (volume control) as

So why doesn't it list the big selling point? "Never needs battery replacement". Don Black. This email is free from viruses and malware because avast! Antivirus protection is active.

Just checked my calnder. Nope, it's not April. DC through the headphones? Don Black. This email is free from viruses and malware because avast! Antivirus protection is active.

Yahoo is very even handed. They not only ruined the forums with NEO but have made the effort to do the same to their mail . What's more they are ignoring the problems and public with equal vigor. Don

If they exclude hobbyists without spelling it out in the rules they risk the wrath of misleading advertising, etc. I think if you have the oldest scope they will honor it. After all, they aren't expec

There must be some working 511s in our collections, rarer than 511A but I think I've seen a few mentioned here in the past. With my luck if I did own one somebody else would have the previous serial n

Does anyone know if the leaking oil is PCB? Don Black. This email is free from viruses and malware because avast! Antivirus protection is active.

Oops. I meant eBay bumblebee and black beauty caps, not tubes. Freudian slip?? Don Black. This email is free from viruses and malware because avast! Antivirus protection is active.

I hope you get it sorted out Dan but I was being facetious about the eBay tubes advertised as tested good. I wonder what tests were done? I noticed another ad for similar caps saying they were tested

I'm not so sure. Yours may be faulty, these are tested good so they must be a rare animal. Don Black. This email is free from viruses and malware because avast! Antivirus protection is active.

Hello Chuck, Thanks for the detailed explanation. I wonder if there are still heat problems whether fitting a small muffin fan would help. They are now plentiful and can be salvaged from old computers

Or instantaneous power or peak power or...horse power (or is that horse manure?). Don Black. This email is free from viruses and malware because avast! Antivirus protection is active.

Perhaps he wants to know the horizontal bandwidth if using X external input, either from the time base plugin switched to external or an amplifier plugin in the horizontal slot? Don Black. This email

What sort of caps are they (electrolytic. paper, plastic, etc.). If not electrolytics how did you measure leakage? For coupling capacitors a hundred Meg can be significant and may not show until worki

I ran it on Windows XP SP3. Don Black. This email is free from viruses and malware because avast! Antivirus protection is active.

Hi Dennis, I bought this CD a little while ago but just opened it now (in sealed wrap). I found it couldn't find the file path when I tried to run the Open 1st_windows.exe file but when I right clicke

7504 is a 90 MHz (100 MHz?) analog scope . Don Black.. This email is free from viruses and malware because avast! Antivirus protection is active.

I need a few knobs and parts for a 7504 and 7A18. Don Black.