As Larry says, the major problem with the older scopes are that they use
custom ICs and mechanical components that are long out of production.
The attenuators on the 465 series are a weak point and are essentially
unrepairable and should be checked for proper operation before purchase.
I have a 465M and a Tek digital scope (TDS-430A, 2 channels, 400 MHz)
and continue to use the 465 as it is preferable for some applications.
(Plus, the digital scope is usually half-way across the basement, over
by the PIC work area). For example, the 465 analog scope is better at
displaying XY plots than the TDS430A. On the other hand, there are many
applications that I would hate to go back to an analog scope, and it
lets me generate graphics that can be used for illustrations.
Jack
www.cliftonlaboratories.com
Larry Phipps wrote:
If portability is not required, you might also want to look at the Tek
7000 series mainframes, and pick up a couple plugins. These tend to be
a little cheaper than the 465, and you can replace a plugin cheaply if
it goes bad. It also opens up the option of a spectrum analyzer
plugin. That being said, I have both and tend to use the 465 most of
the time (and leave the SA plugins installed on the 7000 series).
In general, I highly recommend buying solid state test gear from Tek
and HP of the 70's and 80's era as opposed to newer gear of the same
price... but beware some of it can be very difficult to fix if a
mechanical part fails, like a ganged range switch for instance.
Larry N8LP
Jack Smith wrote:
Tektronix 465 series. 100 MHz, dual trace workhorse of the analog
scopes in the 1970's and should be readily available for a few
hundred dollars.
Budget a decent set of 10X probes if not included.
Jack
Craig Rairdin wrote:
I'm browsing eBay for an oscilloscope suitable for troubleshooting
projects
like the Elecraft kits and am looking for recommendations on particular
models or suggested features and specifications. Thanks for your help.
Craig
NZ0R
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