tektronics 503 scope

From: Russ Blakeman <rhblake_at_bigfoot.com>
Date: Sun Dec 13 20:12:34 1998

I was able to locate a tube/valve for my old Tek 561A before I sold it and luckily
my solid state 454 and 453 have been chugging along fine. Of course I use these for
more than computer work so they work as a general purpose scope very well. When
it's time to trace that tricky signal the HP digital comes out. Luckily all I
needed for it was a cable which I found after 3 months of searching different
sources. Of all places - eBay. The seller had his difital scope stolen but they
left the accessories. You better believe I asked what the serial was of his stolen
unti to make sure that it wasn't mine.

Tony Duell wrote:

> > for originals or copies is the tricky part. Many tubes(valves) are still
> > available new as NOS or rebuilds or newly made. I even have problems on a new
> > digital scope finding some things from HP.
>
> It never fails to amaze me that I can get spare valves for a unit made 50
> years ago (or more), but can't get a new ASIC for a machine made 5 years
> ago....
>
> Sad but true...
>
> -tony
Received on Sun Dec 13 1998 - 20:12:34 GMT