Magnus is right if there is any tube life at all and I do mean fumes. (odd
spacing all of the sudden) In HP 5060/5061 Frankenstein (A combo of the two
systems) I built a new heater controller to drive the few fumes off of the
5060 tube. Amazingly the darn thing works. The i meter barely barely
It seems that later, they decided to shameless use the
FTS/Datum/Symmetricom FTS-5045 module
http://www.gigatest.net/datum/5045txt2.pdf
The OSA-5585 I've has one inside, labeled Symmetricom everywere, and the
Oscilloquartz contribution is a subrack containing the DC-input and
AC-input power
Dan,
The classic Aeroantenna SPIKE snow cone.
http://www.ngs.noaa.gov/ANTCAL/LoadImage?name=AERAT1675_120%2BSPKE.t.jpg
The old Ashtech snow cone
http://www.ngs.noaa.gov/ANTCAL/LoadImage?name=ASH700936A_M%2BNONE.t.jpg
Both of the above will keep birds looking for another place to rest.
You can get a good view of typical high-end GPS antennas with an image search
like:
https://www.google.com/search?tbm=ischq=cors+gps+antenna
For examples of antenna and winter conditions, try these:
https://www.google.com/search?tbm=ischq=gps+antenna+snow
On Thu, 28 Aug 2014 09:15:18 -0400, time-nuts-requ...@febo.com wrote:
Message: 5
Date: Thu, 28 Aug 2014 15:04:36 +0200
From: Attila Kinali att...@kinali.ch
To: Discussion of precise time and frequency measurement
time-nuts@febo.com
Subject: [time-nuts] GPS antenna in snowy
Starting with time-nuts Digest, Vol 121, Issue 70, all of the posts
in a digest are running together with no breaks between individual
posts, just one long paragraph. Looking at any digests prior to that
time, they still display normally. I remember a week or so ago
reading that a change in
Hi,
On Fri, 29 Aug 2014 08:25:06 -0700
Burt I. Weiner b...@att.net wrote:
Starting with time-nuts Digest, Vol 121, Issue 70, all of the posts
in a digest are running together with no breaks between individual
posts, just one long paragraph. Looking at any digests prior to that
time, they
Björn and Tom,
Thanks for the links. It helps visualize things a lot! Our snow was
unusually weird last year. It stuck on everything, any stick larger than
a pencil had at least basket ball sized hunks of snow on it. That's
probably a worst case scenario, tho.
Joe,
OK on the study of snow. It's
At 11:24 AM 8/29/2014, Charles Steinmetz wrote:
Burt wrote:
Starting with time-nuts Digest, Vol 121, Issue 70, all of the posts
in a digest are running together with no breaks between individual
posts, just one long paragraph.
It's not just digests, I have the same problem since the list
Burt wrote:
Starting with time-nuts Digest, Vol 121, Issue 70, all of the posts
in a digest are running together with no breaks between individual
posts, just one long paragraph.
It's not just digests, I have the same problem since the list s/w
change and I receive individual e-mails. One
Hi
Most GPS antennas have a preamp in them. All of the common Time Nut antennas
have one. Gain varies from the mid twenties to over 40db between models. You
really do not want much more gain than you need, so more is not generally
better.
Satellite TV coax is the material of choice for GPS
Hi
Typo, FLX should be FXL helix. Sorry about that.
Bob
On Aug 29, 2014, at 2:36 PM, Bob Camp kb...@n1k.org wrote:
Hi
Well if you want to run 600’ you either will need some fancy coax or a couple
inline amps.
LMR400 is roughly 5 db per 100’ when new. At 300’ that’s 15 db plus
Message: 1
Date: Fri, 29 Aug 2014 01:23:35 +0200
From: Magnus Danielson mag...@rubidium.dyndns.org
To: time-nuts@febo.com
Subject: Re: [time-nuts] Oscilloquartz 3210 Cesium Standard
Message-ID: 53ffb9f7.7000...@rubidium.dyndns.org
Content-Type: text/plain; charset=UTF-8; format=flowed
FTS had a
I'm trying to built a DC to DC from an existing schematic for a frequency
standard I'm working on.
The transformer core is identified as an Indiana General F1152-1-6
The Dc to Dc is running at 22Khz and maybe 20 Watts.
Can't find any info that would allow me to decide on a proper substitute.
Looks like a really nice piece of hardware, well worth fixing up. You might
check the hot-wire ionizer filament on the Cs tube for continuity, as a failure
there may not show up in a meter indication.
Apart from that, the detailed troubleshooting steps in the contemporary HP Cs
service
Hi Corby,
I have the old data on that Indiana General part: it seems to be O-6
material - 4700 initial perm, 6000 max perm, up to 0.5 MHz, 210 degree C
curie point - and F1152-1 is a 36x22 mm ungapped ferramic pot core - AsubL
min =11530. If you need more data, I can probably scan the relevant
cdel...@juno.com said:
The Dc to Dc is running at 22Khz and maybe 20 Watts.
Can't find any info that would allow me to decide on a proper substitute.
Anybody out there have any data on this?
National Semiconductor had a few app-notes that were cookbooks for using
their chips to build DC-DC
Chris
Sorry its not working. Very nice looking unit though.
I did the Frankenstein thing on my 5060/5061.
So if its bad there is no harm in seriously digging in. After all its just
physics.
On Frankenstein it took me an honest 6 months and the support of the
time-nuts you already have. Learned a
Hi
Do you just have the core info or do you have the winding information as well?
Bob
On Aug 29, 2014, at 6:11 PM, cdel...@juno.com wrote:
I'm trying to built a DC to DC from an existing schematic for a frequency
standard I'm working on.
The transformer core is identified as an Indiana
Rather than start from old design, you might just want to look at the
online design tools and matching core selections for simple switcher
boost and buck datasheets/app notes, or SG3524 type transformer converters.
The major distributors carry inductors in their catalogs that are just to
match
Frankly, anybody that builds up a Simple Switcher type converter from scratch
is more than a little nuts and/or awfully lonely. You can buy small,
adjustable pre-built boards (buck or boost configs) off of Ebay for as little
as a dollar each... including shipping from Old Cathay. I usually
Thanks for the inputs everyone,
One of the direct replies got me the data I needed!
Alex, I'd like to by it that way, but A 24VDC input 3700VDC output at 4ma
does not seem to be available!
Cheers,
Corby
___
time-nuts mailing list --
Corby,
Assuming that what you want to do is find a substitute for the F1152,
you should be aware that schematics don't give you enough information to
build one from scratch. The easiest thing to do is buy one from a
catalog of DC-DC converters with the appropriate voltages and power -
unless the
There are actually quite a few makers of what you seek...
EMCO H40P will do 3.75 mA at up to 4000V... voltage selected by a 0..5V input.
Also check out PPM's offerings...
http://www.ppmpower.co.uk/high_voltage_dc_dc_converters/
And UltraVolt's 4AA series:
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