I have an old RCA scope .. free for the hauling. It goes in the
dumpster in two weeks if nobody wants it.
Don
N8DE
Connersville, IN [soon to be Edmore, MI]
carl seyersdahl wrote:
Bill: I tried to answer your letter to Pete, with a CC to Amps, but my
server said "what's going on here?
So, I ll try again a little shorter .!! If anyone has a scope that's better
than my old "an/usm-117 (a real antique) Please let me know. I used several
HP's in the late 50's early 60's in govt work, but I don't recall the
no's.!!
they were pretty big, mounted on carts, and we used them mostly for RTTY
adjustments, etc.
I'm not a beggar , but I have a few things I woul;d part with if I find
the right scope.!!! (but time is short)
We have a local Hamfest coming up next week and some of my "treasures"
will go there (or to the dumpster)
, even tho it makes me sad.!!!!
Solid state or tubes is not important, as long as it works properly.!!!
carl / kz5ca
----- Original Message -----
From: "bill weinel" <tube_radio@mindspring.com>
To: "Pete Smith" <n4zr@contesting.com>
Cc: <amps@contesting.com>
Sent: Wednesday, November 24, 2004 12:41 PM
Subject: Re: [Amps] Advice on instruments for ham use
Pete Smith wrote:
I'm interested in acquiring a used solid-state oscilloscope for ham
use. I know this isn't the place to ask, but hope that people who hang
out here can point me to a ham radio homebrew or similar mailing list
where people would have good advice on which models, what to pay, etc.
There are skillions of Google results based on searching for the above
topics but nothing, so far, that looks like the right answer.
Hi Pete,
I'd recommend you look for a Tektronix 465M or a 465. Both are 100Mhz
triggered sweep dual trace scopes, very common, and can be found at good
prices. The 465 series also features an external trigger and a B'delayed
trigger. These are handy for looking for signal timing / glitch issues.
I have two 465Ms here, one I bought for $75 in working condition, the
other I bought as a parts unit for $25 (It had a broken volts/div switch
on one channel.) However, since it was such a nice unit I couldn't bring
myself to junk it. So I repaired it and use it here in the shop as well.
As others have stated, I would go for a good quality analog scope over a
digital scope. Digital scopess tend to be harder to fix. Also I don't
think digital scopes provide as good a picture of whats happening in an
analog signal as an analog scope does. This is due to the
sampling/averaging nature of the digital scope. So unless you can afford
to purchase one with a very high sampling rate, I would go for a good
quality analog scope.
73 Bill W4WHW
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