In article <
3jbp971pe2uqcq671...@4ax.com>,
Phil Kane <Phil...@nov.shmovz.ka.pop> wrote:
>
>SW - the sounds, the techniques to get a signal in that is usable and
>even enjoyable. The glow of the radio dial. One misses all that in
>"streaming audio". IT's the difference between a radio operator and
>an appliance operator.
>
Ah yess! about twenty years ago I rebuilt a couple of 1940's radios
that would do SW. One, a large AM-FM-SW Magnavox console, is great
for producing that good old console sound. But what it really needs
is Fred Allen or Jack Benny. Has selectable IF coupling, so it was
a good WQXR receiver.
The other, an RME-45 that appears to have been originally built as a
US Navy prototype. Sort of hard to tell from the wiring, as it had
gotten a bunch of ham "improvements," many not compatible with the
design. Needed a power transformer to boot. By the time I was done
with it, it had been completely stripped, all components out of a bare
chassis. Some work with a Boonton 260A Q-meter straightened out the
front end coils and IF's. I had to adapt the power supply to a
replacement transformer that was a mechanical fit, but 750 VCT for the
B supply instead of 600---which was already too high. Choke input
filter took care of that (and lowered B+ by about 40 volts). Redid
the front end with later loctals and some parameter changes, so it's
not an RME-45 as RME built it. The results were spectacular.
>This past weekend we went to the TEK-Museum, a storefront set up just
>this month by a number of friends who were former Tektronix
>engineering employees - there are several thousands of them in this
>area - with restored to-new-condition instruments from throughout
>Tektronix history. Many of them still work. Several were models that
>I used during my career. Many of the instruments on display came from
>personal collections. It looked right. It even smelled right.
>
>Don't knock history.
Where is that museum located? And I wonder how many of those old
scopes came out of Stan Griffiths' 7-car garage. Most of the time, it
isn't too much work to get one of the 530/540-series boatanchors back
up and running. Many of them will still be working and useful when
they hit the century mark. Probably know a few of those thousands of
ex-Tek engineers, though the youngest would be around 70.
I also wonder what has become of the very first 511 scope. Tek bought
that back in the early 60's, refurbished it to "original," and had it
on display for years.
Howard Vollum's Tektronix was, for about 20-25 years, the business
wonder of the high tech world. When he and Jack Murdock began the
business, Portland had absolutely zero for a high-tech labor pool, so
in-house training was a big thing. And one of the more remarkable
accomplishments was that between 1953, when the 530-series plug-in
scopes hit the market, and about 1959, Tek captured almost all of the
US oscillosope market from DuMont.
Hank (ex-Tek 1960-65)