RE: [time-nuts] RE: HP 107BR
Well I'll be dammed !!
Ken Yamashita is still working out here after retiring once from Comsat
It still has the GTE tag on the rear.
Les K1YCM/3
-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Robert E. Martinson
Sent: Thursday, September 15, 2005 11:16 AM
To: 'Discussion of precise time and frequency measurement'
Subject: RE: [time-nuts] RE: HP 107BR
Hey Les,
I installed that oscillator in Pam-1 in 1966.
73,
Bob Martinson
N1VQR
Retired, GTE/Sylvania PSO, GTE ISC, and finely GD.
-----Original Message-----
From: time-nuts-bounces@febo.com [mailto:time-nuts-bounces@febo.com] On
Behalf Of Veenstra, Lester
Sent: Thursday, September 15, 2005 09:30
To: time-nuts@febo.com
Subject: [time-nuts] RE: HP 107BR
I have a problem with my old faithful standard, an HP 107BR. The
regulated voltages are zero, although the raw +46 is there. Anyone
have a power supply schematic I could set a copy of?
Well aged standard. It did better than 30 years service in our Paumalu
Hi Intelsat earth station before moving the K1YCM/3 for additional
service.
Thanks
Les
I have a problem with my old faithful standard, an HP 107BR. The
regulated voltages are zero, although the raw +46 is there. Anyone
have a power supply schematic I could set a copy of?
Well aged standard. It did better than 30 years service in our Paumalu
Hi Intelsat earth station before moving the K1YCM/3 for additional
service.
Thanks
Les
Les,
Sorry, I do not have that manual on hand.
However, if anyone's interested, I have manuals for the following HP
timepieces:
103AR quartz oscillator
105A/B quartz oscillator
113BR mechanical clock (a rare bird and a fascinating manual)
and the Efratom FRK rubidium source.
The above manuals were all salvaged by an astute engineer here at
Steward Observatory as NRAO's local office is moving itself from
Tucson to Charlottesville VA.
I'd be happy to scan these as time permits to get them on the Web,
since they do not appear to be currently viable products for Agilent
and the manuals aren't available as scans anywhere that I know of. I'd
want to talk to the Agilent fellow first to see what he thinks.
Curiously, Agilent's obsolete PDF index lists the 105B as sold to
Symmetricom, although they don't have it on their website. Presumably
they have killed it as a product since it competes directly with the
1050A they sell already.
David Forbes wrote, in part,
"113BR mechanical clock (a rare bird and a fascinating manual)"
Rare? I have two of them, and a manual. If I thought they had
any value, I'd get them working again. One ran for two years
until the 103 gave out. The other didn't work, but I'd lost
interest in trying for <1 second per year so I didn't fix it.
All I had then was the 103AR and a selection of WWV receivers.
The 113 uses regenerative solid state dividers to take 100 KC
down to 1 KC, which goes through a servo resolver to drive a
stepping motor. Various gears run the analog clock face and two
notched wheels that generate a one second tick pulse. The servo
resolver adjusts the phase of the tick. The clock hour and minute
can be adjusted independently of the second hand. The second hand
can also be adjusted independently. The 1 KC motor is not quiet
in one of them. Resolution of the tick phase adjustment is 10 uS,
but the dial is analog and can be set finer than that.
The clock is inadequate for those who seek E-15 accuracy, but it is
an engineering marvel. I first saw one many years ago at an exhibit
of standard time in the Smithsonian.
Speaking of large exponents, if time were to run backwards until the
universe contracted to a point, it's temperature would only be E16.
Ah, that's assuming that entropy is not irreversible.
Bill Hawkins
Bill Hawkins wrote:
David Forbes wrote, in part,
"113BR mechanical clock (a rare bird and a fascinating manual)"
Rare? I have two of them, and a manual. If I thought they had
any value, I'd get them working again. One ran for two years
until the 103 gave out. The other didn't work, but I'd lost
interest in trying for <1 second per year so I didn't fix it.
All I had then was the 103AR and a selection of WWV receivers.
Bill Hawkins
Bill,
No, they aren't common, but that doesn't mean that they have value.
I also find the 113BR to be a fascinating piece of mechanical wizardry
produced by an electronics company. It's a rather unique mantel clock,
if nothing else. (To truly do it justice, the owner should have a
working 5060A on the floor nearby.)
But keeping the 113BR going requires the skills of a mechanical
clockmaker, which I am not by a long shot. I'll stick to displaying
the time on CRTs, thank you.
I own the original manuals for the 106 series and the 107 series including the
BR.
I have had my 107BR running in my lab for more than 15 years. It was originally
owned and installed at Eimac in San Carlos, CA and ran there for many decades.
I also have a manual that covers a slightly different mechanical clock+divider
called the 115.
73,
Jeffrey Pawlan, WA6KBL
Hi Jeffrey,
I sure wouldn't mind having a copy of your manual for my HP115BR.
-Chuck
Jeffrey Pawlan wrote:
I own the original manuals for the 106 series and the 107 series including the
BR.
I have had my 107BR running in my lab for more than 15 years. It was originally
owned and installed at Eimac in San Carlos, CA and ran there for many decades.
I also have a manual that covers a slightly different mechanical clock+divider
called the 115.
73,
Jeffrey Pawlan, WA6KBL
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
HI Jeffrey:
I have the following equipment looking for manuals:
107BR
113AR
114BR
HO3 115BR
My 113AR ran for many years then quit. I had it in the garage since the
1 kc wine would drive you nuts if in the house. Also it was unbearable
if the drawer was cracked open. Best to have all the front panel screws
installed and tight to contain the sound. I had to replace the photo
interrupter and also added an input circuit so it would take TTL level
pulses. But is sure is nice to see mechanical hands.
Have Fun,
Brooke Clarke, N6GCE
w/Java http://www.PRC68.com
w/o Java http://www.pacificsites.com/~brooke/PRC68COM.shtml
http://www.precisionclock.com
Jeffrey Pawlan wrote:
I own the original manuals for the 106 series and the 107 series including the
BR.
I have had my 107BR running in my lab for more than 15 years. It was originally
owned and installed at Eimac in San Carlos, CA and ran there for many decades.
I also have a manual that covers a slightly different mechanical clock+divider
called the 115.
73,
Jeffrey Pawlan, WA6KBL
I don't think I have a 113 since my manual is a 115. But The equipment is in the
back of a storage shed and blocked by lots of other stuff right now so I cannot
check. I did not attempt to get it running because I also heard the horror
stories of the loud sound and the very low MTBF from its original owner: HP Labs
in Palo Alto.
I am a bit overloaded right now with a circuit design and pcb layout that must
be finished. Then I may have a break to copy or scan manuals and I will post
something.
73,
Jeffrey Pawlan
In reference to:
"Curiously, Agilent's obsolete PDF index lists the 105B as sold to
Symmetricom, although they don't have it on their website. Presumably
they have killed it as a product since it competes directly with the 1050A
they sell already."
Actually the 105B just went out of support (~July 2005) so it was already
not in active production at the time of the acquisition.
That means that Symmetricom did not kill the 105B, it was already obsoleted
when acquired.
Just setting the record straight.
Dave Carlson
----- Original Message -----
From: "David Forbes" dforbes@dakotacom.net
To: "Discussion of precise time and frequency measurement"
time-nuts@febo.com
Sent: Thursday, September 15, 2005 9:49 AM
Subject: Re: [time-nuts] Other HP 10x manuals (was HP 107BR)
I have a problem with my old faithful standard, an HP 107BR. The
regulated voltages are zero, although the raw +46 is there. Anyone have a
power supply schematic I could set a copy of?
Well aged standard. It did better than 30 years service in our Paumalu
Hi Intelsat earth station before moving the K1YCM/3 for additional
service.
Thanks
Les
Les,
Sorry, I do not have that manual on hand.
However, if anyone's interested, I have manuals for the following HP
timepieces:
103AR quartz oscillator
105A/B quartz oscillator
113BR mechanical clock (a rare bird and a fascinating manual)
and the Efratom FRK rubidium source.
The above manuals were all salvaged by an astute engineer here at Steward
Observatory as NRAO's local office is moving itself from Tucson to
Charlottesville VA.
I'd be happy to scan these as time permits to get them on the Web, since
they do not appear to be currently viable products for Agilent and the
manuals aren't available as scans anywhere that I know of. I'd want to
talk to the Agilent fellow first to see what he thinks.
Curiously, Agilent's obsolete PDF index lists the 105B as sold to
Symmetricom, although they don't have it on their website. Presumably they
have killed it as a product since it competes directly with the 1050A they
sell already.
time-nuts mailing list
time-nuts@febo.com
https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
Hi Brooke,
I have a 107A/BR manual, that is out on loan for a
few days. I'll make it available to you when it comes
back.
As to the 1KHz whine. It can be improved a lot by the
simple act of cleaning the gears, and replacing the lubrication
in the ball bearings. The motor gets louder the more heavily
it is loaded.
-Chuck
Brooke Clarke wrote:
HI Jeffrey:
I have the following equipment looking for manuals:
107BR
113AR
114BR
HO3 115BR
My 113AR ran for many years then quit. I had it in the garage since the
1 kc wine would drive you nuts if in the house. Also it was unbearable
if the drawer was cracked open. Best to have all the front panel screws
installed and tight to contain the sound. I had to replace the photo
interrupter and also added an input circuit so it would take TTL level
pulses. But is sure is nice to see mechanical hands.
Have Fun,
Brooke Clarke, N6GCE