On 2012 Jan 31, at 7:14 PM, Ian King wrote:
I have a 561A that makes me happy. :-) I do need to clean its
switches,
though. FWIW, I'd love to find a 3A74 plug-in for it. There's enough
stuff that I do with vintage machines, requiring not screaming hot
bandwidth but multiple inputs, that the 3A74 would just be far too
cool
for words. Just sayin'
There is a 4-channel plug-in (presumably a 3A74) in one of the 500
series Tek scopes at the radio museum here. Not sure which 5xx base
it is in. I'd love to be working on it.
I have this nagging fear one day I will go in to the museum and
somebody will have thrown out the tek scopes.