7 Aug
2020
7 Aug
'20
4:08 p.m.
anyone ever seen one of these?
has a motorola 6800 date coded 1976 on it
https://www.flickr.com/photos/1ajs/50199901793/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50200714992/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50199903443/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50200713557/in/dateposted-public/
prityy obscure no model markings on the case. the rack its in has handles
for carying so it might of flown around in a plane as part of a kit for
doing geophysical not sure though
7 Aug
7 Aug
4:34 p.m.
The OCO looks nice. Timing gear maybe?
Warner
On Fri, Aug 7, 2020, 5:08 PM Adrian Stoness via cctalk <
cctalk at classiccmp.org> wrote:
anyone ever seen one of these?
has a motorola 6800 date coded 1976 on it
https://www.flickr.com/photos/1ajs/50199901793/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50200714992/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50199903443/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50200713557/in/dateposted-public/
prityy obscure no model markings on the case. the rack its in has handles
for carying so it might of flown around in a plane as part of a kit for
doing geophysical not sure though
10 Aug
10 Aug
12:17 p.m.
On 8/7/20 4:34 PM, Warner Losh via cctalk wrote:
The OCO looks nice. Timing gear maybe?
Looks like a mid 70's - early 80's three-axis fluxgate magnetometer.
The precision of a fluxgate is a direct function of the stability of the
frequency source that is driving the drive winding, so an OCXO makes
perfect sense.
My offhand guess would be oil and gas exploration.
--
Christian Kennedy, Ph.D.
chris at mainecoon.com AF6AP | DB00000692 | PG00029419
http://www.mainecoon.com PGP KeyID 108DAB97
PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97
"Mr. McKittrick, after careful consideration?"
12:40 p.m.
On 8/10/20 12:17 PM, Christian Kennedy via cctalk wrote:
On 8/7/20 4:34 PM, Warner Losh via cctalk wrote:
I recall that the petroleum industry was among the earliest of adopters
of NMR logging, hailing back to the late 1950s/early 1960s for use in
oil exploration.
Medical use was much later.
--Chuck
The OCO looks nice. Timing gear maybe?
Looks like a mid 70's - early 80's three-axis fluxgate magnetometer.
The precision of a fluxgate is a direct function of the stability of the
frequency source that is driving the drive winding, so an OCXO makes
perfect sense.
My offhand guess would be oil and gas exploration.
2:44 p.m.
On 8/10/20 12:40 PM, Chuck Guzis via cctalk wrote:
On 8/10/20 12:17 PM, Christian Kennedy via cctalk
wrote:
>
>
> On 8/7/20 4:34 PM, Warner Losh via cctalk wrote:
>
>> The OCO looks nice. Timing gear maybe?
>
There was a discussion of this on the cctalk discord
It was made for the USGS to study the earth's magnetic field
5:45 p.m.
On 8/10/20 2:44 PM, Al Kossow via cctalk wrote:
On 8/10/20 12:40 PM, Chuck Guzis via cctalk wrote:
Anyone remember the Popular Electronics "Carl and Jerry" episode that
involved a baby bottle full of water with a coil wrapped around it?
"The Educated Nursing Bottle" April, 1964, PDF page 82 here;
https://hobbydocbox.com/Radio/69634003-Popular-1964-electronics-35-cents-ta…
An interesting article about using a 7090 to determine the cause of WWI
also.
--Chuck
On 8/10/20 12:17 PM, Christian Kennedy via cctalk
wrote:
>
>
> On 8/7/20 4:34 PM, Warner Losh via cctalk wrote:
>
>> The OCO looks nice. Timing gear maybe?
>
There was a discussion of this on the cctalk discord
It was made for the USGS to study the earth's magnetic field
11 Aug
11 Aug
12:33 p.m.
yea witch the us gov had some sorta station setup st the airport here in
northern mb fo 30+ yrs untill nassa left when bush cut the ballon program
funding
On Mon, Aug 10, 2020 at 4:51 PM Al Kossow via cctalk <cctalk at classiccmp.org>
wrote:
On 8/10/20 12:40 PM, Chuck Guzis via cctalk wrote:
On 8/10/20 12:17 PM, Christian Kennedy via cctalk
wrote:
>
>
> On 8/7/20 4:34 PM, Warner Losh via cctalk wrote:
>
>> The OCO looks nice. Timing gear maybe?
>
There was a discussion of this on the cctalk discord
It was made for the USGS to study the earth's magnetic field
12:30 p.m.
there was equipment like up here in the 60's for exploration that actualy
was featured in national geographic in 68? for looking for ore bodies
On Mon, Aug 10, 2020 at 2:18 PM Christian Kennedy via cctalk <
cctalk at classiccmp.org> wrote:
On 8/7/20 4:34 PM, Warner Losh via cctalk wrote:
The OCO looks nice. Timing gear maybe?
Looks like a mid 70's - early 80's three-axis fluxgate magnetometer.
The precision of a fluxgate is a direct function of the stability of the
frequency source that is driving the drive winding, so an OCXO makes
perfect sense.
My offhand guess would be oil and gas exploration.
--
Christian Kennedy, Ph.D.
chris at mainecoon.com AF6AP | DB00000692 | PG00029419
http://www.mainecoon.com PGP KeyID 108DAB97
PGP fingerprint: 4E99 10B6 7253 B048 6685 6CBC 55E1 20A3 108D AB97
"Mr. McKittrick, after careful consideration?"
7 Aug
7 Aug
11:44 p.m.
It says "fluxgate magnetometer" on the case so its for measuring the earths
magnetic field, or other magnetic fields.
Dave
-----Original Message-----
From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Adrian Stoness
via cctalk
Sent: 08 August 2020 00:08
To: General Discussion: On-Topic and Off-Topic Posts
<cctalk at classiccmp.org>
Subject: weird rack unit
anyone ever seen one of these?
has a motorola 6800 date coded 1976 on it
https://www.flickr.com/photos/1ajs/50199901793/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50200714992/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50199903443/in/dateposted-public/
https://www.flickr.com/photos/1ajs/50200713557/in/dateposted-public/
prityy obscure no model markings on the case. the rack its in has handles for
carying so it might of flown around in a plane as part of a kit for doing
geophysical not sure though
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