[time-nuts] Re: HP105B

[Jeremy Nichols]

Magnus is correct. One additional bit of trivia: HP’s last tube-based
instrument was the 428B DC Milliameter. It was made for another year or so
after the 200CD was finally dropped. So many military and industrial
contracts were written specifying these instruments that customers insisted
they stay in production, so the contractors didn’t have to re-qualify (or
whatever the procedure was) their whole contract. HP said, hey, if you
wanna pay…



On Sun, Jan 16, 2022 at 2:35 PM Magnus Danielson via time-nuts <
time-nuts at lists.febo.com> wrote:

> Hi,
>
> No, not for HP. The HP200A through D products where separate products
> for 8 years, then the 200A and 200B was merged to the 200AB and the 200C
> and 200D merged into 200CD that was running for 37 years, totaling in 45
> years of continuous production. Not bad for a tube-based oscillator. The
> numbers are from the top of my head, but was featured in an HP
> PR-article, where they where proud of this fact, even after breaking out
> Agilent. Someone can probably do the research and correct details, but I
> distinctly recall the 45 total years.
>
> Cheers,
> Magnus
>
> On 2022-01-16 22:18, Louis Taber wrote:
> > Hi All,
> >
> > The HP 105B is in the HP catalogs for a 33 year period, 1968 through
> > 2000.  That is a 33 year run.  Is this an HP/Agilent/Keysight record?
> >   Does anyone know how the newer units were fabricated?
> >
> > It is just barely mentioned in the year 2000 catalog.  The price went up
> > from $1800 to $9700 in 26 years.  About 5.5 times the original price.  I
> > wonder what the price was in 2000.
> >
> > I was looking at the old HP catalogs at http://hparchive.com/hp_catalogs
> > for the HP105B Quartz Oscillator.  The 1967 catalog has the 106A and
> > 107AR/BR on page 538, but no 105A/B
> >
> > 1968 $1800 p594-597
> > 1969 $1800 p648-651
> > 1970 $1800 p624
> > 1972 $1950 p237
> > 1973 $2145 p284
> > 1974  No catalog or supplement published
> > 1975 $2470 p287
> > 1976 $2725 p276
> > 1977 $2950 p274
> > 1978 $3250 p300
> > 1979 $3500 p282
> > 1980 $3750 p284
> > 1981 Not listed
> > 1982 $5750 p307
> > 1983 No price p281
> > 1984 No price p275
> > 1986 $5800 p257
> > 1987 $6400 p340
> > 1988 $6800 p467
> > 1989 $7500 p487
> > 1990 $8600 p491
> > 1991 $9000 p510
> > 1992 $9500 p556
> > 1993 $9700 p498
> > 1994/5/6 No catalog on the site.
> > 1997 No price p493
> > 1998 No price p503
> > 1999 No price p508
> > 2000 "The HP 105B quartz frequency standard uses the HP 10811D and is
> > available as a complete standalone instrument."  p 491
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-- 
Jeremy Nichols
Sent from my iPad 6.