I have for sale a Tektronix 485 Oscilloscope. It is a
better-than-entry-level dual trace scope. It is good up to 350MHz
(50 ohm input) and 250MHz (1 MΩ input), making it usable for most
amateur radio work. Like all TEK scopes of this era it is built like
a tank, with first quality components. It has some nice added
features, too: like the ability to use active TEK probes. For most
people, this is the only scope they will need.
It features selectable input impedances, a dual timebase, and
horizontal sweep rates down to 1 ns/div. It runs off 115 VAC and
weighs 20.5 pounds making it very portable. It has a convenient
carrying handle that doubles as an adjustable tilt-bail stand.
The photo below was taken this morning. The sign wave seen was
produced by my finger touching the probe just to show that the
display works.
It comes with 2 probes (P6105A and P6106A), pouch for the probes,
and AC cord.
Here is the link to a video showing how to utilize the delayed time
base of this scope.
https://www.youtube.com/watch?v=J-7MycqHPOs
The image below was taken from that video showing a TEK 485 scope
displaying two traces while zooming in on the highlighted section of
the upper trace with the delayed time base.
This is a stock photo of the Tektronix 485 Oscilloscope to show the
entire package:
I'm asking $400 OBO and can bring it with me to the ARRL Convention
in Sutton, WV, on Saturday if anyone is interested.
73, Clark, W8TN