On Aug 19, 2010, at 7:13 PM, Bob Camp wrote:
> Hopefully they will keep GPS running long enough for me to find something to
> compare it to.
My new GPSDO leaves me with the question of "how do I measure the phase noise
of what is by far the best oscillator I own... without buying a better one t
Hi
Oh, you mean like my ever trusty color burst sub-carrier reference
Or my Omega receiver
Or my Loran C box
Hopefully they will keep GPS running long enough for me to find something to
compare it to.
Bob
On Aug 19, 2010, at 9:42 PM, "Didier Juges" wrote:
> "I haven't fabricat
On Aug 19, 2010, at 6:42 PM, Didier Juges wrote:
> Well, you need another reference that does not use the same principles to
> check your first reference against.
>
> That one worked for me.
Ooooh, good one!
> Now I am working on the next one, because "a man with two clocks..."
"...needs a t
"I haven't fabricated a good excuse to want my own rubidium standard yet, but
I'll keep working on that. :)"
Well, you need another reference that does not use the same principles to check
your first reference against.
That one worked for me.
Now I am working on the next one, because "a man wi
On Aug 19, 2010, at 4:54 PM, Bob Camp wrote:
> Yup, the original question was "why a TBolt?"
I just joined time-nuts today, so please forgive me if I'm beating a dead
horse. For me, the answer to "why a TBolt" was "it automatically calibrates
itself against somebody else's well-maintained cesiu
Hi
To get to "auto calibrate" hit a & and then it's the "A" option (Autotune
rather than auto calibrate).
Sorry for the confusion.
Bob
--
From: "Bob Camp"
Sent: Thursday, August 19, 2010 5:10 PM
To: "'Discussion of precise time and frequency m
Hi
Yup, the original question was "why a TBolt?"
Bob
--
From: "Stanley Reynolds"
Sent: Thursday, August 19, 2010 6:51 PM
To: ; "Discussion of precise time and frequency
measurement"
Subject: Re: [time-nuts] (no subject)
My crystal ball indica
My crystal ball indicates the comparison is used Lpro and used Tbolt, original
poster wanted to know why expend $100 for Tbolt when Lpro is cheaper.
Stanley
From: Dan Rae
To: Discussion of precise time and frequency measurement
Sent: Thu, August 19, 2010 4
Hi Peter,
Are you sure your known truth coordinates are in WGS84 datum?
--
Björn
> To John WA4WDL:
>
> The coordinates out of my current (fixed) position calculated by
> the SirF GPS and the tbold during a 48h survey are different.
> On a map this differences makes up a shift of up to 100m
To John WA4WDL:
The coordinates out of my current (fixed) position calculated by
the SirF GPS and the tbold during a 48h survey are different.
On a map this differences makes up a shift of up to 100m around
my true qth. With other words if I would (and could) use the tbold
as a mobile GPS I woul
Bob Camp wrote:
Hi
Simple answer - they self calibrate to < 1x10^-13 at a one day time period.
Essentially zero long term drift.
Bob
Have I missed something? A self calibrating cheap Rb unit? a self
calibrating 10811? I really must wake up :^)
dr
-Original Message-
From: ti
Hi
Simple answer - they self calibrate to < 1x10^-13 at a one day time period.
Essentially zero long term drift.
Bob
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Mark2
Sent: Thursday, August 19, 2010 4:49 PM
To: time-nuts@febo.com
Hi
A few other things to try / consider:
1) Hit the "auto calibrate" function in LH to calibrate the slope of the
OCXO, it will also load some damping and time constant stuff that you may
want to overwrite. I don't know if this is a "beta only" feature or not.
2) Make sure that the TBolt isn't g
Hi Mark,
> Sure they're good but other than it's a really cool and stable oscillator
> why is everyone bothering with these when you can get a decent LPRO
> Rubidium for the same or less . It at lest ten times more stable than
> the HP oven job. I just bought 5 good LPROs on Ebay for about $20
Sure they're good but other than it's a really cool and stable oscillator why
is everyone bothering with these when you can get a decent LPRO Rubidium for
the same or less . It at lest ten times more stable than the HP oven job. I
just bought 5 good LPROs on Ebay for about $200.00 plus shipp
Peter asked:
2) Is it necessary to modify Tbolt settings or does tbold work best with
factory settings?
The answer is, for best performance you need to modify the factory setting.
There has been much posted on which ones and how, but bottom line is it all
depend on what your setup is and what
Hello
I need 6 74act175 chips
can you help??
Thanks
Emmanouil Mantzaras
Athens - Greece
-- Original Message --
Received: Thu, 19 Aug 2010 07:22:24 PM EEST
From: "Poul-Henning Kamp"
To: "Time nuts"
Subject: [time-nuts] small cache of 74AC175 located
Purely by chance I just have locate
What do you mean by "totally different results"? What were the readings or
the differences?
John WA4WDL
--
From: "Peter Krengel"
Sent: Thursday, August 19, 2010 12:28 PM
To:
Subject: [time-nuts] Different Survey Results
Hello,
I'm new to th
Hello,
I'm new to the list and to the themes at all. I'm running a V3 Thunderbolt
using the great Lady Heather Software (thanks for this).
Setting up the tbold for the first time I made a 48h survey.
To compare the results I also started a SirF III GPS using VisualGPS
software and after the 48h
Purely by chance I just have located a small cache of 74AC175
and 74ACT175 chips in a private collection here in Denmark.
For reasons too complicated to get into here, I cannot buy them
outright, but I can probably liberate some of them to good homes,
in return for good behaviour and donation of
I'd like to put my order in for 3 PICTIC boards, 2 Mixer boards and 2
DDS boards.
thanks,
Eric
On Wed, Aug 18, 2010 at 9:27 PM, Stanley Reynolds
wrote:
> Just boards, 5 times 9.00 = $45 mailed payment $47.5 Paypal
> two pictic, one DDS board, two mixer boards, note the PDF talks about a 3rd
>
I 'm offering the boards in any combination.
Ah, that's good to know. In that case I'd like to order one DDS board
and two mixer boards; will supply my own TIC. My address is below.
Thanks for making this possible,
Jan-Derk Bakker
Uilenstede 12
1183AH Amstelveen
The Netherlands, Europe
Phone
Brice,
You are on the list.
Will let everyone know when payment is needed, if you are using paypal no need
to send payment till I can ship the boards, if by mail then should arrive after
September 3.
Stanley
From: Heathkid
To: Discussion of precise time
Hi David,
did you chked the PIC 3.3 voltage?? because it is the key point if you have
garbled msg.
Rgds, Ernie.
-Original Message-
From: Didier Juges
To: Time-Nuts
Sent: Thu, Aug 19, 2010 2:28 pm
Subject: Re: [time-nuts] Tbolt and iCruse readout problem - any ideas?
1 in
1 in 400 have a problem, so assuming that he had at least one other complaint
would seem to imply that he sold as many as 800 units at least? That sounds
somewhat high, but if true, good for him :)
Didier
Sent from my BlackBerry Wireless thingy while I do other things.
Re PIC programming -- if the volume is sufficient, Digi-Key will program
PICs. The set-up fee is enough that you probably want to do at least
50-100 units to amortize the cost, but it's not too bad. That's how we
handled the PIC for the TADD-2.
John
Heathkid wrote:
Stanley,
I'm not g
Hi Didier, the Trimble is a Resolution T (3.3v)user manual at the URL
quoted by Stanley (Thanks again Stanley)
The Synergy is Motorola UT+ Oncore (5v) and I am sure the manual for those
is around somewhere but not had time to chase that yet. Please feel free to
add these to your gallery...
Further to my messages regarding this problem, I contacted Bob (aka
fluke.l) who replied almost immediately, saying that this has happened
to around 1 in 400 iCruse units and he is working on a fix. Sort of a
relief that there really is a problem and not some strange combination
of events.
Stanley, Thank you very much for the rapid response I will browse those URLs
and see if I can id the pcbs. Didier has advised he has a gallery so we
should make good progress.
Thanks
Alan G3NYK
- Original Message -
From: "Stanley Reynolds"
To: "Discussion of precise time and frequency m
Thanks Didier I will certainly let you know the results
Alan
- Original Message -
From: "Didier Juges"
To: "Time-Nuts"
Sent: Thursday, August 19, 2010 12:43 AM
Subject: Re: [time-nuts] GPS pcb IDs??
> Alan,
>
> You may want to compare to those:
> http://www.ko4bb.com/Timing/GPS_Pics/
Hi Brooke,
I know what you are thinking! Sadly the supply is 12.1v so there's
plenty of regulator headroom, very interesting page though. I'm
beginning to think that Didier's suggestion of corrupted firmware in the
iCruse is the most probable explanation.
Best wishes,
David
On 18/08/20
31 matches
Mail list logo
