Said wrote:
you make and post negative assumptions about a seller without any
first hand experience
* * *
It is unfair to post that kind of negative opinion without you
having any first hand experience with them.
This is already way out of hand -- so with this, I'm done:
I
Hi Bob,
On 09/09/2012 03:55 AM, Bob Camp wrote:
Hi
It would be nice if somebody came up with a fast port adaptation to one of the
standard data collection programs.
It would not be all that hard to do an adaptation board which creates a
live USB stream for instance. Either using an FPGA or
Charles,
maybe I did read your email wrong, I apologize for that. To me it came
across as negative toward the seller and the listings, and it seems this is
not how it was meant, my appologies.
Bye,
Said
In a message dated 9/8/2012 23:05:30 Pacific Daylight Time,
Can't compare the Z3805A to the HP58503A but I have found in the archives
that the Z3805A has a 16 channel GPS receiver and it is better to find the
Symmetricom labeled one as it has a real double-oven OCXO. According to a
2010 time-nut message the Z3805A is almost the same as the TBolt.
On Sat,
Hi
Ok, I've got at least one of all of these sitting in the basement. They are a
very much mixed bag. Some of the HP's are quite good. Others not so much. The
variation isn't so much model to model. They vary unit to unit. The TBolt's
vary by year. Roughly they group as pre-2001, 2001 to 2003,
Not being a time nut but a frequency nut I lack some of the time test
equipment, but my partner on our joint development work makes up for it. So he
among other things recently looked at the 1 pps output of the Tbolt against
a Cesium. Using a HP 5352A with 500 samples over 50% are within +-
Hi
If you stretch out to 10,000 samples and watch over a full 24 hour period,
you likely will see some in the +/-1.5 ns region.
Bob
On Sep 8, 2012, at 11:06 AM, ewkeh...@aol.com wrote:
Not being a time nut but a frequency nut I lack some of the time test
equipment, but my partner on our
For a GPS receiver that is in my book acceptable but then I am not a
time-nut. I use that signal to discipline Rb's. Works for me.
Bert Kehren
In a message dated 9/8/2012 12:47:52 P.M. Eastern Daylight Time,
li...@rtty.us writes:
Hi
If you stretch out to 10,000 samples and watch over a
Said wrote (re: eBay 58503As):
they work well for me, look brand-new, and came with power supply, rs-232
cable, and antenna. I think it's a 5V antenna. The unit had about 37000 on
the lifetime.
The seller has close up photos, that's what the units look like. I plugged
in the power, ran GPSCon
Wow, thank you everyone for the wealth of information and advice. It
sounds like for my needs, either the TBolt or HP Z-box will do just fine,
and cost is going to be more of a driver than anything else. It seems that
the HPs are more plentiful on a certain well-known auction site, but
The HP5352A has a 2nS single shot resolution: how can you have 300pS or 1nS
measures?
On Sat, Sep 8, 2012 at 9:08 PM, Robert Liesenfeld xu...@xunil.net wrote:
Wow, thank you everyone for the wealth of information and advice. It
sounds like for my needs, either the TBolt or HP Z-box will do
Charles,
Not sure why this is confusing to you, he clearly explains all the differences
in the description, and what is shown in the photos is exactly what I received.
The z3805A based units cost more than Z3801As, and the ones with one or two
1pps and 10Mhz outputs cost slightly more.
He
Sorry my mistake 5372A I will send you the data direct
Bert Kehren
In a message dated 9/8/2012 6:15:59 P.M. Eastern Daylight Time,
azelio.bori...@screen.it writes:
The HP5352A has a 2nS single shot resolution: how can you have 300pS or
1nS
measures?
On Sat, Sep 8, 2012 at 9:08 PM,
Hi
You will have a tough time with the 5372 running the longer time spans…
Bob
On Sep 8, 2012, at 9:08 PM, ewkeh...@aol.com wrote:
Sorry my mistake 5372A I will send you the data direct
Bert Kehren
In a message dated 9/8/2012 6:15:59 P.M. Eastern Daylight Time,
On 09/09/2012 03:34 AM, Bob Camp wrote:
Hi
You will have a tough time with the 5372 running the longer time spans…
Yes and no. Using the 5372A internal memory, you have 8192 memory
positions to play with. You can mitigate that by parametrisation, Fast
Port or just use it as a triggered
Hi
It would be nice if somebody came up with a fast port adaptation to one of the
standard data collection programs.
Bob
On Sep 8, 2012, at 9:45 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote:
On 09/09/2012 03:34 AM, Bob Camp wrote:
Hi
You will have a tough time with the 5372
Said wrote:
Not sure why this is confusing to you, he clearly explains all the
differences in the description
I don't see anyplace where he explains all the differences, clearly
or otherwise. And as I said, ALL of the descriptions I've seen
(including the descriptions of the Z3805-based
Charles,
Because you make and post negative assumptions about a seller without any first
hand experience based on your opinion on what you consider a sub-par EBay
listing by a non-English seller.
I'd be very reluctant to count on finding anything specific inside the
housing
This is close
Hello-
My name is Robert Liesenfeld, I discovered this mailing list via the
fascinating website leapsecond.com. I'm an amateur radio operator (AK6L)
and builder, and my interest in precise timekeeping initially stemmed from
simply wanting a very accurate clock source to which I could reference
You want to start with a GPSDO. I like the Trimble Thunderbolt. The
price is right and they're readily available. I have no experience
with the HP units but they seem to be highly regarded.
Rb oscillators are great for some things, but need to be calibrated.
That's where the GPSDO comes in.
Welcome aboard,
yes, there is no FAQ about how to start in this hobby... should I try to
implement one? Anyway, start with a Trimble Thunderbolt (aka TBolt), later
you will know why it is highly recommended (direct OCXO disciplining and LH
software support, mainly). I have a Z3815A with the famous
Hello Robert,
your question is like asking which car you should buy, or which airline you
should fly :)
Everyone will have a different answer.
But I do not recommend the Thunderbolts, it's a crab-shoot with them
(different versions have different performance, the new ones are actually
On Fri, Sep 7, 2012 at 10:34 AM, Robert Liesenfeld xu...@xunil.net wrote:
Hello-
I'm considering the purchase of a GPS receiver to serve as my workbench
10MHz source.
Buy a Thunderbolt first. This is I think the best value and
technicaly hard to beat. These is much support for the t-bolt
Robert,
my bad, that seller offers 58503A units based on both Z3801A and Z3805A.
The latter has a 16 channel GPS receiver, so seems to me much more desirable
than the Z3801A. $50 difference. I have been testing the latter, not the
former.
bye,
Said
In a message dated 9/7/2012
Good one, the HP58503A, actually it is my reference at work.
On Fri, Sep 7, 2012 at 10:37 PM, saidj...@aol.com wrote:
Hello Robert,
your question is like asking which car you should buy, or which airline you
should fly :)
Everyone will have a different answer.
But I do not recommend the
Robert, you have gotten some good advice already.
With regards to rubidium standards I've bought several of the cheaper rubidium
units and with the benefit of hindsight I would have put the money towards a
higher quality item such as a PRS 10. There are some good write ups on line
that
Said,
Where do you rank the Samsung GCRU-D among these?
Jerry
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of saidj...@aol.com
Sent: Friday, September 07, 2012 4:37 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] Recommendations
And this is the key: finding out what types of measurements can be done is
part of the path to be taken being a time-nut. It is better to use what
already may be available in the home lab (usually every experimenter has a
'scope) and delay the purchase of the test gear.
On Sat, Sep 8, 2012 at
Dear Said,
Good afternoon. How is the service and cosmetic condition of the HP GPS
products you have bought from this source? I am considering a Z3805A just for
the sake of owning one and the versatility of plug and play. Still afraid to
take the plunge.
Did you buy a raw unit? Or as a kit
Dear Azelio,
Do you know how the Z3805A compares to the 58503A?
Cheers!
Edgardo Molina
Dirección IPTEL
www.iptel.net.mx
T : 55 55 55202444
M : 04455 20501854
Piensa en Bits SA de CV
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CONFIDENCIALIDAD DE INFORMACION
Este mensaje tiene carácter confidencial. Si
Hi Edgardo,
they work well for me, look brand-new, and came with power supply, rs-232
cable, and antenna. I think it's a 5V antenna. The unit had about 37000 on
the lifetime.
The seller has close up photos, that's what the units look like. I plugged
in the power, ran GPSCon to start an
Hi Jerry,
I am not familiar with those, sorry.
The only complaint I would have about the 58503A units I have is that they
have a bit of power supply spurs at about -130dBc. Running them from
batteries would probably take care of that. Otherwise they work great for me
and
provide both
Dear Said,
Thank you for your kind explanation. I will be considering such a purchase in
the near future. I will keep you informed about my experiences. You have a nice
evening.
Regards,
Edgardo Molina
Dirección IPTEL
www.iptel.net.mx
T : 55 55 55202444
M : 04455 20501854
Piensa en Bits
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