Re: [time-nuts] NTGS50AA, better than Thunderbolt?
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 for the 37265? -- Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for Embedded Applications Omen Technology Inc The High Reliability Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt?
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 stability? Any pin for pin replacement for the 37265? 37265 - low phase noise floor (can be as low as -175dBc/Hz), high tempco 34310-T - relatively high phase noise floor (~ -150dBc/Hz). 49422 - ??. haven't measured one. Bruce ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt?
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: 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 Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt?
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 flattening out. Over the last 24 hours it is down to under 5E-12 parts per day. These numbers are based upon the EFC voltage and known EFC gain. Of course, there could be (and probably is) some aging effects to the EFC DAC/reference voltage. The unit is running while disciplined to GPS. and is not being thermally stabilized. The oscillator seems to be very immune to external temperature effects. Unit temperature has varied +/- 2 degrees C and the air conditioning has been cycling quite a bit (it's been 95 degrees F outside). ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt?
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 Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt?
What is the difference between the -T2 and plain -T??? The manufacturer that made them for Trimble... ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt?
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 someone. Fred W6WAW ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt?
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, fed with a pretty good quality Lambda power supply. I suspect that any perceived diiference between it and the T'bolts may be down to the oven, which I suspect may be a double oven in the case of the Nortel. Due to the seller putting a sticky label on it helpfully saying used any identification has gone, but the size of it for it's age would indicate that it is something like the Morion inside. I don't see the temperature variation effects on the LH display that both my t'bolts show. It's performance at the 10,000 Tau level after 24 hours, with only the quick survey, and no tuning of any parameters was on a par with my T'bolt / E1938 and a little better than the standard t'bolt, all fed from the same antenna / splitter. It does, as Mark pointed out, see a better signal strength than the standard t'bolts, but as there are two RF amp stages visible on the board, with three filters, that doesn't surprise. I suspect the three LEDs grouped on the left of the little board may be more than just a power on indicator. Watching them and the LH 3.1 display with a cold start, I would guess that the red led is a cold oven / warm up indicator, and possibly the yellow one is a minor alert flag, with green being all OK. Only the imminent coming of the leap second will prove this one way or the other. The other two LEDs are steady green for phase lock, green flashing for recovery and the other, yellow, for holdover. These are all a bit delayed compared with the LH display. So, at the right price, worth getting, if you can live with the physical size and power supply needs. I'll be looking for a nice 2U case at the next swap meet. And many thanks to Mark for his swift LH changes! Dan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 from Guatemala) The seller on Ebay has scaled back his dirty capitalist pig escalation in price down to $100... shipping still at the 100% markup of $60 (unit was was $69/$30 before the excitement). Note that these units do have the pads for SMA connectors if you want to replace the oscillator. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt
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 settled in to a VERY flat line aging curve... like pretty much zero aging and zero temp coefficient. The Trimble oscillator in a Tbolt has a horrendous temperature coefficient (DAC voltage tracks the temp sensor reading very closely) and a rather pronounced aging curve (DAC voltage plot is sloped... very constant slope when active temperature control is used) - Which OCXO did you get in this one? ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 several weeks. It settled in to a VERY flat line aging curve... like pretty much zero aging and zero temp coefficient. The Trimble oscillator in a Tbolt has a horrendous temperature coefficient (DAC voltage tracks the temp sensor reading very closely) and a rather pronounced aging curve (DAC voltage plot is sloped... very constant slope when active temperature control is used) - Which OCXO did you get in this one? ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. Which version of the TBolt? The one with the 37265 OCXO ? Bruce ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt
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 ? ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 escalation in price down to $100... shipping still at the 100% markup of $60 (unit was was $69/$30 before the excitement). Note that these units do have the pads for SMA connectors if you want to replace the oscillator. I got two Trimble boards from HK. They seem to be an earlier version of the NTGS50AA. There is one BIG full length PCB, no separate daughter board with LEDs and DB9 serial port. See Ebay #300678217853. They run fairley well, have not let them settle down really. There are some very slight differences between the boards. PWB markings 45000-00-C rev H and 45000-00-B rev C. The newer has FW 3.62 and OCXO are Trimble 49422-CR, date 0436. The older board has FW 3.55 and OCXO marked Trimble STP 2254, SPEC 34310 C1, date 0247. Running Tboltmon you get a GUI page for controlling the LEDs. Never saw that for the ordinary Tbolts. So it seems the Tboltmon is aware of these variations. :-) It is a 8 channel GPS. Has anyone compared these full length GPSTM Thunderbolts with the smaller layout NTGS50AA versions? -- Björn ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 . . . Fred ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 TBolts here for the TAPR group buy I know there is some variation in units. Not to mention there have been several different Thunderbolt products over the years. So compared to a TBolt is somewhat vague. The NTGS50AA board I bought on eBay last January was not remarkable. It fit in the general TBolt-class GPSDO and I didn't pursue it further. What I'm wondering is if your NTGS50AA is unusually good, or your Thunderbolt is below average, or if your testing is based on metrics different from what I use. Maybe there are significantly different versions of NTGS50AA. On the issue of temperature sensitivity -- do you know if the TBolt sensitivity that you see is primarily due to the OCXO itself or due to the DS1620 sensor and firmware [over]reaction to said temperature change? Thanks, /tvb ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt?
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 curve. The Tbolt DAC curve seems to follow the temp curve very closely. It does seem to be tracking the osc and not the temp sensor... I tried freezing the tbolt osc can with cold spray and the DAC showed changes the temp sensor did not. It is obviously compensating for temp changes in the oscillator. The Tbolt and the Nortel look like they use the same DS1620 temp sensor, but the Nortel firmware does not show the temperature sensor glitch. Once the oscillator settled in, I was seeing rms errors in the OSC plot in the sub 10 ppt range and the PPS plot in the 2 nsec range. Even a temperature stabilized tbolt was several times this. I have not run it a lot in holdover mode (except when I had the antenna disconnected so that I could do some Resolution SMT work). I was not recording data in that mode. The Nortel unit seems to be designed with more fault tolerance and redundancy then the Tbolt. For instance, it has multiple copies of the firmware and can select a good copy. You can also hot-upgrade the firmware. I have not recorded a lot of data from the Nortel since I am still playing with updating the program and am interrupting the runs quite often. -- 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. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt?
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 .. 6V). The standard Tbolt osc EFC has a -3.5V/Hz gain. The Nortel has a +1.5V/Hz gain. The Tbolt can easily be driven with high quality/low noise linear supplies. The Nortel limits you to the onboard DC-DC power supply (unless you want to do some hacking). ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt
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 has been my experience that any offer that is more than a very few dollars less than the asking price isn't accepted. Check item #270970034317. Before yesterday (5-3-12) the previous sale was on April 16th but after this thread started 8 sold in 8 hours triggering the sharp rise in the shipping cost and the new listing with the far higher prices. Time-nuts can have an effect on what happens in the 'real world'. ;-) -Arthur ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 5/4/2012 7:23 AM, Arthur Dent wrote: 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 has been my experience that any offer that is more than a very few dollars less than the asking price isn't accepted. Check item #270970034317. Before yesterday (5-3-12) the previous sale was on April 16th but after this thread started 8 sold in 8 hours triggering the sharp rise in the shipping cost and the new listing with the far higher prices. Time-nuts can have an effect on what happens in the 'real world'. ;-) -Arthur ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1424 / Virus Database: 2411/4976 - Release Date: 05/03/12 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt
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 all the messages work. 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, but again, not all messages are supported. I'd love to see LH (and Z3XXX if possible!) support the NNTSG50AA fully. If anyone out there has documentation for the comms syntax of the NTGS50AA, we'd be pleased to hear! The 48V power supply requirements are a nuisance, which I got around using plus and minus 24V supplies. I use a UPS rather than a battery for backup. 73, Murray ZL1BPU ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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, but again, not all messages are supported. I'd love to see LH (and Z3XXX if possible!) support the NNTSG50AA fully. If anyone out there has documentation for the comms syntax of the NTGS50AA, we'd be pleased to hear! I've got one on order. Assuming it works, I'll get with Mark when it arrives and we'll put a new LH build together, based on whatever protocol documentation we can come up with. -- john Miles Design LLC ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 Thunderbolt software in TSIP mode, although not all the messages work. Hi Murray, Were you able to find an PPS output? As I understand it, the unit has a connector for a pulse every 2 seconds. Kevin ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 monitor what comes back, but again, not all messages are supported. I'd love to see LH (and Z3XXX if possible!) support the NNTSG50AA fully. If anyone out there has documentation for the comms syntax of the NTGS50AA, we'd be pleased to hear! I've got one on order. Assuming it works, I'll get with Mark when it arrives and we'll put a new LH build together, based on whatever protocol documentation we can come up with. -- john Miles Design LLC These appear to use a Trimble 34310-T2 OCXO. The 34310 variant (at least the pair I have) doesn't have the same low noise as the OCXO in the Thunderbolt. The T2 variant may differ. Bruce ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 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, but again, not all messages are supported. I'd love to see LH (and Z3XXX if possible!) support the NNTSG50AA fully. If anyone out there has documentation for the comms syntax of the NTGS50AA, we'd be pleased to hear! I've got one on order. Assuming it works, I'll get with Mark when it arrives and we'll put a new LH build together, based on whatever protocol documentation we can come up with. -- john Miles Design LLC ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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... He certainly isn't getting positive feedback from me. Dan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 his fault you didn't check the current listing. He has every right to change the price and/or shipping. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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, but if you follow mode-s receivers, eventually the Beast will be using a timing reference for MLAT (multilateralization) use. http://www.modesbeast.com/product.html Once the next generation Beast is running, there will be some non-timenut demand for gpsdos. When I found 3 new old stock Symetricom Starlocs at the Livermore swap meet for $30 a pop, the surplus gods were looking down on me. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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. 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... He certainly isn't getting positive feedback from me. Dan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 4:33 PM, Steve steve-kr...@cox.net wrote: 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. 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... He certainly isn't getting positive feedback from me. Dan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 pass. Steve On May 3, 2012, at 3:16 PM, Dan Raedan...@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. 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... He certainly isn't getting positive feedback from me. Dan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] NTGS50AA, better than Thunderbolt
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 in the U.S. that appear to have fairly large quantities of the Thunderbolts and are selling them for significantly less. While the U.S. sellers seem to be selling a number of their units, I haven't seen any of the $249 units sell. I wouldn't be surprised to see the stateside prices go up some as well. Maybe the supply isn't endless after all. -Arthur ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 to fix the issue before my feedback. On 05/03/12, Mike Smi...@flatsurface.com wrote: 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 his fault you didn't check the current listing. He has every right to change the price and/or shipping. ___ time-nuts mailing list -- [1]time-nuts@febo.com To unsubscribe, go to [2]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. References 1. mailto:time-nuts@febo.com 2. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 oscillators on ebay so there are several versions of the oscillator. I have no idea how they differ. I've got a Trimble unit I bought on ebay 2 or 3 years ago from some sort of telecomm equipment that is similar but definitely from a different unit, and there are no markings on that oscillator at all and it looks like the metal case is smaller and there is no insulating foam around it. Alan On Thu, May 3, 2012 at 2:54 PM, EB4APL eb4...@cembreros.jazztel.es wrote: 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 pass. Steve On May 3, 2012, at 3:16 PM, Dan Raedan...@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. 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... He certainly isn't getting positive feedback from me. Dan __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
I bought 3, NTGS50AA from fluke.l, a few months ago after I sussed out how to get Lady Heather talking to my first one. (to beat the rush and price inflation that this would probably cause..) Of my 3 units 2 are T2 the other is T. The Nortel design spec states: Oscillator XXX will identify which OCXO was used in the particular device. XXX is to be either T, Oak, or T2. The T identifies the Tekelec DOC-1903 device and the Oak indicates the OFC-4895 device from Oak Frequency Control Group. A T2 will indicate the Tekelec DOC-2127 device. 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. Sam. Subject: Re: [time-nuts] NTGS50AA, better than Thunderbolt 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 oscillators on ebay so there are several versions of the oscillator. I have no idea how they differ. I've got a Trimble unit I bought on ebay 2 or 3 years ago from some sort of telecomm equipment that is similar but definitely from a different unit, and there are no markings on that oscillator at all and it looks like the metal case is smaller and there is no insulating foam around it. Alan On Thu, May 3, 2012 at 2:54 PM, EB4APL eb4...@cembreros.jazztel.es wrote: 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 pass. Steve On May 3, 2012, at 3:16 PM, Dan Raedan...@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. 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... He certainly isn't getting positive feedback from me. Dan __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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. Thanks for that bit and all the other NTGS50AA information. Kevin ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 price on the batch he already had listed, so he did it by raising the shipping. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] NTGS50AA, better than Thunderbolt
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 more money. Even if the bidders compensate by bidding a lower amount equal to the increased shipping charge, the fee on shipping is less. Use the calculator and vary your current ebay store subscription type. I suspect someone could make a complaint to ebay since in theory setting the shipping price higher than actual (plus a bit for packing and handling) is not allowed. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
