OK, what are the differences between
37265
34310
49422
The 32765 is in one of my thunderbolts.
I replaced the failed OCXO in another Thunderbolt with the 49422.
The 49422 has a different pinout, is taller, and has opposite gain.
Is there a difference in stability? Any pin for pin replacement
Chuck Forsberg WA7KGX N2469R wrote:
OK, what are the differences between
37265
34310
49422
The 32765 is in one of my thunderbolts.
I replaced the failed OCXO in another Thunderbolt with the 49422.
The 49422 has a different pinout, is taller, and has opposite gain.
Is there a difference in
Hi
There's a list somewhere that maps the part numbers to who made them. Some
OCXO's might be better than others…..
Bob
On May 31, 2012, at 10:28 PM, Chuck Forsberg WA7KGX N2469R wrote:
What is the difference between the -T2 and plain -T???
On 05/31/2012 06:48 PM, Mark Sims wrote:
I got in another NTG50AA unit a couple of weeks ago and have been watching the
oscillator (Trimble 34310-T2) age in and stabilize. It started out aging at
around 1E-9 parts/day. After two weeks, the aging rate for the last 72 hours
was down to the 2E-11 range, with the curve still
What is the difference between the -T2 and plain -T???
On 05/31/2012 06:48 PM, Mark Sims wrote:
Trimble 34310-T2
--
Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com
Developer of Industrial ZMODEM(Tm) for Embedded Applications
Omen Technology Inc The High Reliability
What is the difference between the -T2 and plain -T???
The manufacturer that made them for Trimble...
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I unpacked by NTGS50AA board this evening. Fortunately, the used
sticker attached by the seller was small and easy to remove.
On mine, the 10 MHz oscillator says Trimble and has a part number of
34310-0 with a date code of 0002.
It has a S/N of 1669-12028.
I hope that this is of use to
On 5/20/2012 7:56 PM, Mark Sims wrote:
An interesting test would be to test a Nortel unit and a Tbolt with the same
oscillator and see if the basic hardware had any difference in performance (I
bet they would be very close)
I had my Nortel running on the bench, in the open, for about 48 Hours,
Hi
Which OCXO did you get in this one?
Bob
On May 20, 2012, at 1:41 PM, Mark Sims wrote:
My second NTGS50AA came in from Old Cathay. Seems to be working OK. A
couple weeks of oscillator aging will tell more. This one originated from
Guatemala City, Guatemala (the other one also came
It appears to be the same as the other one (which has an unreadable label).
This one is marked Trimble 0001-262T 34310-T2.
So far it appears to be oblivious to external temperature changes. I don't
know about its phase noise. The other unit had been running 24/7 for several
weeks. It
Mark Sims wrote:
It appears to be the same as the other one (which has an unreadable label).
This one is marked Trimble 0001-262T 34310-T2.
So far it appears to be oblivious to external temperature changes. I don't
know about its phase noise. The other unit had been running 24/7 for
Yes. I once read that the 37265 was a double oven unit, but it appears to be
a single oven... and not particularly good oven. The 32765 oscillator's main
claim to fame is its wonderful phase noise performance.
--
Which version of the TBolt?
The one with the 37265 OCXO ?
Hi Mark,
My second NTGS50AA came in from Old Cathay. Seems to be working OK. A
couple weeks of oscillator aging will tell more. This one originated
from Guatemala City, Guatemala (the other one also came from Guatemala)
The seller on Ebay has scaled back his dirty capitalist pig
I have one arriving that I will probably pick up at the post office
tomorrow. I ordered it before the price and shipping went up.
I will take a look and see whether there are any readable markings on
the oscillator. If so, I'll post them here.
Now if these units only had a 1PPS output . .
Hi Mark,
Do you have data/plots on this and your previous NTGS50AA? Several posts imply
it is better than a Thunderbolt. If you have some phase noise plots or locked
phase/frequency difference or holdover raw data that you could send I'd
appreciate it.
I ask because having tested hundreds of
Much of the improvement seems to be in the better oscillator temperature
compensation... no telling how the phase noise is, but the Nortel osc has a
VERY flat aging curve and no detectable DAC changes with temp. I have several
tbolts and they all have a very temperature dependent DAC
An interesting test would be to test a Nortel unit and a Tbolt with the same
oscillator and see if the basic hardware had any difference in performance (I
bet they would be very close). One issue is the Tbolt can swing the DAC -5V ..
+5V, the Nortel from 0V .. +10V (with a default of 0V ..
It is interesting to note that a new listing that started 12 hours
ago doesn't have the price at $69.99 with $30 shipping as the
previous listing did originally but this item is priced at $169 with
'Buy It Now' plus $60 shipping and there are only 5 available.
You can make a best offer but it
Yes, the Chinese sellers have a hair trigger on boosting prices. But, we are
not forced to buy. At $229 delivered for an as-is, unchecked, no warranty
item they may not sell too many. Let him (or they) sit on them for a while
unsold and the price will eventually drop again.
Peter
On
Mark,
I agree with you. I've been using an NTGS50AA here for some time, and it is
an excellent unit with none of the thermal problems of the Tbolt. Easily as
good as the old Z3801A, and much lower power consumption. I use the NTGS50AA
with the Thunderbolt software in TSIP mode, although not
While I've not tried the recently suggested method for making it talk to
LH,
I did find another crude way that works. If you get it talking to TBOLTMON
or some similar software via the front panel, you can use LH on another
computer on the rear-panel monitor port to monitor what comes back,
On May 3, 2012, at 1:18 PM, Murray Greenman wrote:
I agree with you. I've been using an NTGS50AA here for some time, and it is
an excellent unit with none of the thermal problems of the Tbolt. Easily as
good as the old Z3801A, and much lower power consumption. I use the NTGS50AA
with the
John Miles wrote:
While I've not tried the recently suggested method for making it talk to
LH,
I did find another crude way that works. If you get it talking to TBOLTMON
or some similar software via the front panel, you can use LH on another
computer on the rear-panel monitor port to
Did the seller double the shipping cost today? I could have sworn it was $30
the
last time I looked at the listing.
Steve
On May 3, 2012, at 2:42 PM, John Miles jmi...@pop.net wrote:
While I've not tried the recently suggested method for making it talk to
LH,
I did find another crude
I just bought one of these. I was /really/ annoyed when I go to pay to
find out that he has doubled the shipping fee since earlier this morning
from $30 to $60.
I'm not a happy camper...
Dan
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On May 3, 2012, at 2:08 PM, Steve wrote:
Did the seller double the shipping cost today? I could have sworn it was $30
the
last time I looked at the listing.
I paid $30 shipping early today.
Kevin
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On 5/3/2012 1:08 PM, Steve wrote:
Did the seller double the shipping cost today? I could have sworn it was $30 the
last time I looked at the listing.
Steve
Yes, he did. Unfortunately I didn't check since I still had the page
open from earlier, and didn't find out till I went to Paypal...
On 5/3/2012 4:16 PM, Dan Rae wrote:
Yes, he did. Unfortunately I didn't check since I still had the page
open from earlier, and didn't find out till I went to Paypal...
He certainly isn't getting positive feedback from me.
You'd let your own oversight affect the feedback you leave? It's not
It seems these sellers can at least do a go/no-go test. Sure they can't
quantify the products, but they can qualify them.
So you just get the PCB and no case?
I'm just irked that nowadays all these units are from China. If you
wizards want to do an open source gpsdo, count me in.
A bit OT,
Guess I waited too long to order. $60 for shipping - I'll pass.
Steve
On May 3, 2012, at 3:16 PM, Dan Rae dan...@verizon.net wrote:
On 5/3/2012 1:08 PM, Steve wrote:
Did the seller double the shipping cost today? I could have sworn it was $30
the
last time I looked at the listing.
Well $60 or not he seems to be out of them.
Hey they see a trend they take advantage thats what epays about.
For the fun of it I did ring a telco surplus parts outfit. As many as you
need at $300. :-)
But they would come from the US and the shipping was cheap.
Regards
Paul.
On Thu, May 3, 2012 at
Well, I don't understand well what is happening. Unless I am totally
wrong and bought a piece of crap, I still see $25 as the standard
international shipping. I just bought one.
Ignacio, EB4APL
On 03/05/2012 22:33, Steve wrote:
Guess I waited too long to order. $60 for shipping - I'll
gary lists at lazygranch.com
I'm just irked that nowadays all these units are from China.
It has been the same way with the Thunderbolts as well. The various
Chinese sellers have all raised their prices (in unison) for just the
Thunderbolt to $249. Interestingly there are a couple of sellers
There is a feedback rating for shipping cost. A $60 charge to ship a
PCB would rate the lowest score in that area from me, even if I did
purchase one (which I didn't due to seeing that change). And that
isn't retaliation, that is honesty, and no, the seller wouldn't get a
chance
There are/were two listings for what looks like about the same thing.
fluke.l is/was selling one with $25.00 shipping, but the markings on the
oscillator case look like 34310-0 or O whereas the other listing showed a
34310-T2 oscillator if I remember correctly. I also see some 34310-T bare
. There isn't a 1PPS output at all,
but there is a Even Second output with a negative pulse, 40-60 ns wide.
This is available via the font mounted SMB connector or via the rear 110-pin
AMP Z-pack connector.
Sam.
Subject: Re: [time-nuts] NTGS50AA, better than Thunderbolt
There are/were two
On May 3, 2012, at 7:21 PM, Sam wrote:
Kevin, you asked if there was a PPS output. There isn't a 1PPS output at all,
but there is a Even Second output with a negative pulse, 40-60 ns wide.
This is available via the font mounted SMB connector or via the rear 110-pin
AMP Z-pack connector.
I bought one this morning when the shipping was $30. Since I was out
for the day, I didn't have a chance to pay for it until this evening.
The shipping charge was not changed. Apparently, it is calculated and
frozen by ebay at the time of purchase.
My guess is that he couldn't raise the
http://pages.ebay.com/sellerinformation/news/Feecalculator.html
For Joe Pocketprotector, the fee on the item and shipping is the same.
However, for Joe Pileofcrap that has a basic store, the fee on the item
is double the fee on the shipping, so jacking up the shipping cost is a
way of making
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