Hi Alan,
I used a fairly crude heat gun, and I looked at the lamp and was able to
see when it had cleared since I had evaporated the rubidium from the
glas. But it was not extreme heat (it's a small heat-gun anyway) or
particular long time. I had to redo it and re-think it to figure out how
to
On 09/06/2013 05:06 AM, Chris Albertson wrote:
Can anyone estimate how many GPS jammers there are in the New England
area? There just might be thousands. I don't know.
I think the reason most people are not effected is that most GPS user
are mobile and if they are near a jammer it is only
On 09/06/2013 07:20 AM, Mark C. Stephens wrote:
Ah more people should take the leap, the broke ones are cheap and are moistly
easy to fix and you have the almighty HP service manuals to guide you through
the toughest of faults.
Isn't it great how they even deal with handling multiple faults
I've got a raw wideband GPS capture, dual frequency L1/L2, on this
page about my GPS/GNSS front-end board project:
http://pmonta.com/blog/2012/06/04/gnss-firehose/
I plan to do a new spin of this board with some minor improvements as
soon as I have the time. (For those who want to build the
Hi
A truck jammer isn't what you would use to take out a large area, you would
need 100,000 of that sort of jammer. Since the truckers that use them get
fired, there's a limited number of them in use….
That said, if the event is simply toggling into holdover and then immediately
popping back
The MSF 60 kHz time and frequency signal broadcast from Anthorn Radio
Station will be shut down on Thursday 12 September 2013 from 10:00 to 14:00
BST (UTC+1).
The interruption to the transmission is required to allow maintenance work
to be carried out in safety.
See:
Hi
The lack of long tau analysis is what keeps the 5371 and 5372 from becoming
staple items with TImeNuts.
Bob
On Sep 6, 2013, at 3:08 AM, Magnus Danielson mag...@rubidium.dyndns.org wrote:
On 09/06/2013 07:20 AM, Mark C. Stephens wrote:
Ah more people should take the leap, the broke ones
Hi Folks!
I am following the time-nuts for sometime but this is the first time I post
a message and I hope it is not off-topic.
As I live in Brazil, I can not find used equipment in the local market. My
(only?) option is to import some. Since money is always a scarce resource
and the shipping
Hi Edesio,
Welcome to the group. The HP 5316A you are looking at is an excellent little
counter. While not up to extreme time nut standards, they work well and in my
opinion would make a much better first counter than (say) one of the modern low
end (not known brand) new counters or
I stumbled across a web site which provides details on the use of GPS for
ionospeheric research.
http://chain.physics.unb.ca/chain/
under data products there is a link to raw GPS data which may or may not be
suitable. You need to register in order to have access however.
There are some
I prefer to lug around my trusty old 5335A for the general bench work.
Actually, I noticed the darn (5335a's) have been breeding in the store room,
there is 7 of them there now!
I wouldn't guarantee the Cal or if they work even though!
Funnily enough, I have just kicked a 5334B out of the
I got sent a duff NTGS50AA with a crook Trimble 49422C oscillator module.
Not from Bob, he always checks his stuff, I have my vague suspicion this was
sold as untested when the seller knew it was a dud..
Anyway, we are rearranging the workshop and I couldn't get to the Weller
desolder station.
On 9/6/13 4:00 AM, Bob Camp wrote:
Hi
A truck jammer isn't what you would use to take out a large area,
you would need 100,000 of that sort of jammer. Since the truckers
that use them get fired, there's a limited number of them in use….
Considering they cost $30, and they're not that easy to
Hi Brian,
No unusual GPS blips noticed here with my Z3801a on Long Island, NY either.
The SVN 4 may have caused a holdover event to download a new almanac and
some receivers were not happy doing that if only seeing a few birds and/or
poor geometry in NE area at that time.
FCSTDV, or Forecast
Hi Magnus,
Well, I went ahead and tried this again - 400 C, bulb spinning, back end of
bulb upwards, 75 seconds. Kept the bulb in the same direction until it
cooled. Lamp voltage did not go up, in fact it seemed to return back to
3.5V from 3.7V, but the lock time went down. It was running just
Hi Everyone,
http://www.ko4bb.com/Manuals/05%29_GPS_Timing/RFTG-m/RFTG-m-rb_L105A_Hi_res/
lucent%283%29.jpg
I'm trying to figure out where the RFTG gets its Rb module temperature and I
think it has to be on the board above most likely in the upper left. The
cutout is where the RB module
Trimble has confirmed to us that the nonstandard outage on PRN 4 (SVN 34)
may have caused the Resolution-T receivers to perform a reset and then
return to normal operation. They are investigating the cause but it does
explain why only some people experienced the event. Other Trimble receivers
and
You bet I'm outraged by GPS causing the death of simpler, more secure
systems like Loran. GPS has many ways to fail, but vacuum tube
transmitters
just required new tubes.
Aren't you outraged too?
Wait - this is about outages?
Never mind.
(Remembering Emily Litella / Gilda Ratner - violins in
Bill, did you forget your meds or double up on the dosage or something? ;-)
Ed
On 9/6/2013 1:07 PM, Bill Hawkins wrote:
You bet I'm outraged by GPS causing the death of simpler, more secure
systems like Loran. GPS has many ways to fail, but vacuum tube
transmitters
just required new tubes.
I got this thing today. Here's some pics of it.
http://s251.photobucket.com/user/DogTi/library/time?sort=3page=1
Can anyone tell me anything significant about it? I know less than nothing as
I'm real new to this. It came with a Alcatel Lucent 26dB antenna, pipe mount
and a couple of SMB
I have that same board and I am powering it from a 30VDC unregulated
power cube from an old printer, it has been working well that way for
several months now. The specs say it will shutdown at around 18V so it
will probably be OK at 19.5, if it is a unregulated brick the actual
output may
Just make sure both channels are OK
Sometimes you can find them with the C channel for the same price
-pete
On Fri, Sep 6, 2013 at 5:01 AM, Robert Atkinson robert8...@yahoo.co.ukwrote:
Hi Edesio,
Welcome to the group. The HP 5316A you are looking at is an excellent
little counter. While
Thanks Paul.
I was thinking about the AC and maybe I won't go there. It may be just too
much ripple for the PS converter, but yeah, the 19.5VDC may work, if not like I
say, I've got a nice 5A 28VAC transformer I can get about 35VDC out of with a
large cap it should be good enough. I should
Hi
Ok, here's why the guy gets fired:
The trucking company doesn't do the GPS thing to catch the trucker goofing off.
They do it because they get paid to do it. A number of companies will only ship
with you *if* you can real time track the cargo and tell them when it'll get to
their dock. Why
Lisa,
Thanks for this update. How many Resolution-T receivers are out there?
Not to go off on another tangent - but I have heard something about 'GPS
jamming during the America's Cup'. Hmmm.
Regards,
John Westmoreland
On Fri, Sep 6, 2013 at 8:54 AM, Lisa Perdue perdue.l...@gmail.com wrote:
Hi
Looks very much like the units I have here.
I would not put AC on it since the switcher might not like the ripple. If you
want the switcher to last a long time, stay away from the ends of it's range.
Their efficiency drops at each end, heat goes up, and lifetime goes down.
By far the
OK I will comment
I believe the bridges intention is to allow either a plus or minus dc
system with respect to ground. Clever. However the cap jus past it looks
pretty beefy and then there is an additional one beyond that so looks like
ac is a possibility. Check the diode bridge specs though to
Fellow Time Nuts:
Is this a site to be trusted?:
http://adn.agi.com/SatelliteOutageCalendar/SOFCalendar.aspx
Regards,
John W.
On Fri, Sep 6, 2013 at 6:41 PM, John C. Westmoreland, P.E.
j...@westmorelandengineering.com wrote:
Lisa,
Thanks for this update. How many Resolution-T receivers
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