Re: [time-nuts] Older Lucent GPSDO and Rubidium combo
Hi It's unclear exactly what they did. My *guess* is: 1) They fire up the GPS and get it doing it's thing 2) They lock up the XO and get it into on time / on frequency status 3) They use the XO signal to zero out the offset in the Rb Again, that's just a guess. There are later versions where the Rb is free running. No XO / no GPS involved. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Paul Cloud Sent: Sunday, December 12, 2010 9:18 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Older Lucent GPSDO and Rubidium combo Hello Bob and the list, Thanks for the reply, I have been trying to set up a good quiet 24 volt supply with adequate current capacity to carry the startup load. I was initially using a small switcher but it didn't have enough moxie to get startup completed it seems. Some of my initial issues were related to that. I'm now using a 24 volt console copier power supply with plenty of current capacity but limited cooling options and I'm working on a linear supply which is functional I just need to get it into a box. Once I get the power supply issue resolved I will get into the unit to figure out where I can go from there. Are you under the impression that the Rb is disciplined also? I had thought that the GPSDO side was disciplined and the Rb was only for holdover, they seem to call it fly-wheeling. They spec 8 hour holdover for the GPSDO and 24 hour holdover for the Rb in the limited info I've been able to snag. I'm still digging for more info. If anyone has pin-outs for the multi-row connector on the back of the OM (oscillator module) drawers I would appreciate it. Thanks Again and 73, Paul On Wed, Dec 8, 2010 at 6:00 AM, Bob Camp li...@rtty.us wrote: Hi It's probably easier to put in a new buffer for the 10 MHz out of the Rb than to mess with what's there. Since the two units work back and forth together, anything that takes out a signal (like the 15 MHz) is likely to at least flag an alarm. More likely it will impact their phase lock / holdover stuff. Lucent never sold those units on the open market as a stand alone product. HP and Trimble did sell their parts and thus had to document / support them. The first stop on the software list for the Z38xx and TBolt parts is the demo software they came with. I know of no similar gui based software for the Lucent parts. Even coming up with a full set of cables to connect them up is a bit of a chore. I'm sure there is indeed data coming out of them. It's bound to be documented somewhere. It may be simple enough that you can eyeball it. Bob On Dec 7, 2010, at 11:59 PM, Paul Cloud wrote: Hello all, I'm a long-time lurker, (read on the web) but only a short time list-member. I purchased a Lucent timing shelf through eBay several months ago. I had long wanted a GPSDO. Indeed, I had missed out on the first wave of HP Z3801A units that were so cheap. I really did not have any need for one but I still wanted it ;) In any case I did purchase this Lucent KS 24019 which puts 15 MHz out with aplomb, but I of course need 10 MHz. I suspect that I can remove the 15 MHz oscillator block and jumper the 10 MHz signal from the rubidium and the GPSDO through to the built-in distribution unit but I would like to see if anyone has any detailed information about these units? In specific I wondered if anyone on the list had modded these units and if so what were the results? Also does anyone know whether there is a way to get information out of them similar to the Trimble T-Bolt, I suspect not. The units that I have are the heat-sink front drawers that slide into the timing tray Rubidium is a KS24019 L102B the GPSDO is a KS 24019 L104C. I have trolled the back catalog of posts to the list on these but see no publicly available source of information. I have found some info on KO4BB's site but most of it seems to pertain to the newer smaller all heat-sink case units. There have in the past been some posts regarding these but I thought that I should introduce myself first and ask for help from the list at large before sending personal emails. I have purchased a T-Bolt in somewhat suspect condition (pieces) but I think that it is now working OK. I do not have any other source to compare it to other than the high stability internal oscillator in my frequency counters, (Racal 1992 and a fully loaded Fluke 1953A). I will check it's output on some of my Tek counters when I get them out of storage. My real interest in this unit is to leave it on all the time as a constant reference source for my service monitor and counters as well as a better calibration source for my test gear. I'm having fun playing with the T-Bolt though and I'm trying to get it gussied-up, ( --you'd never guess I'm an Okie) with a display etc. Thanks in advance and 73, Paul Cloud, KF5CKQ ___
[time-nuts] ny information regarding FEI-Zyfer GPS Time Frequency Module
A few of these are currently on eBay at pretty low prices. I have never heard of them and was wondering if anyone here has had any experience with them or knows where some information might be found. ___ 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] Loran DX and Austron 2100
Hi It's been a long time since I've tried this, but the Iceland chain was a reasonable catch from the central US with an Austron 2100 and the standard supplied whip antenna. Reception was ok at night and useless during the day. As I recall the signal was well above ( 20 db) the rated floor of the receiver at night. Local noise sources near the antenna are likely to be more of an issue than antenna type. Directivity can indeed help with that. Down there, what ever you use will need to be vertically polarized. If you do believe gain is the issue, a 30' vertical on a good ground / out in the clear may give you almost 14 db of gain over the normal 6' whip over who knows what (volts per meter ...). That assumes both are run into a high impedance preamp. Picking up the chains in Europe (or even Asia) is very do-able. The signal will be a sky wave only sort of thing. That limits it's use for timing. Certainly an entertaining way to pass the winter. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed Sent: Sunday, December 12, 2010 12:13 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Loran DX and Austron 2100 I had picked up the Lessay chain in the summer over night. But it was very unreliable. Have been waiting for winter to try again. I suppose it might be time but business travel will preclude a effort this week. I am off next week so that should be a good chance. My antennas are. Preamplified loran whip 6' off the ground. Was good enough for the summer A 67 foot vertical with many radials 16 X as an alternate. No preamp. Paul WB8TSL Near Boston Ma. On Sun, Dec 12, 2010 at 10:37 AM, Stan, W1LE stanw...@verizon.net wrote: Good Morning Claude, I am assembling a K9AY terminated loop antenna, pointing to N. Europe. (~30 degrees) Will use a ARR preamplifier at the antenna. I hope to start listening later this month. Some stations to listen for: Lessay, France master on GRI 6731, Soustons France, slave X BO , master on 7001, Jan Mayen, slave X, Berlevag slave Y Sylt, on 7499, Lessay, slave X, Vaerlandet, slave Y Eidi (Ejde) on 9007 master, Jan Mayen slave W,BO slave X, Vaerlandet slave Y From my location on Cape Cod FN41sr, looks like the closest active chain is Eidi with GRI of 9007 Eidi, IP62lh DX of 2900.1 miles Jan Mayen, IQ50pv, 2900.2 miles Lessay, IN99fd at 3274.1 miles Soustons, IN93hr at 3412.4 miles, (6731 GRI) I have not calculated BO, and Berlevag details (7001 GRI) nor for the Sylt chain. A google search on Loran C stations will show a listing of the few active stations with the station details like RF power output and Lat/Long. I have converted Lat/Long to 6 digit grid locator for my ease in LOB and DX calculations with BD2004 software. Sky wave propagation should be possible for the North Atlantic, European, Western Russia, Saudi, and Mediterranean chains. Low likelihood of any ground wave and its better accuracies. I miss my Nantucket Loran-C station and its Cs accuracies. A modern Stanford Research Systems model FS700 Loran C receiver is on hand as the receiver. Stan, W1LE Cape Cod FN41sr On 12/12/2010 8:17 AM, Claude Houde wrote: Hello everybody. Does anyone on the northern east coast has been sucessfull in receiving European Loran C chains ? I'm located around Montreal, Québec. If so, what type of antennas you used ? Thanks ! Claude Houde VA2 HDD ___ 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 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] Loran DX and Austron 2100
??? Both my Austron 2100Fs have Austron loops. -John Hi It's been a long time since I've tried this, but the Iceland chain was a reasonable catch from the central US with an Austron 2100 and the standard supplied whip antenna. Reception was ok at night and useless during the day. As I recall the signal was well above ( 20 db) the rated floor of the receiver at night. Local noise sources near the antenna are likely to be more of an issue than antenna type. Directivity can indeed help with that. Down there, what ever you use will need to be vertically polarized. If you do believe gain is the issue, a 30' vertical on a good ground / out in the clear may give you almost 14 db of gain over the normal 6' whip over who knows what (volts per meter ...). That assumes both are run into a high impedance preamp. Picking up the chains in Europe (or even Asia) is very do-able. The signal will be a sky wave only sort of thing. That limits it's use for timing. Certainly an entertaining way to pass the winter. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed Sent: Sunday, December 12, 2010 12:13 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Loran DX and Austron 2100 I had picked up the Lessay chain in the summer over night. But it was very unreliable. Have been waiting for winter to try again. I suppose it might be time but business travel will preclude a effort this week. I am off next week so that should be a good chance. My antennas are. Preamplified loran whip 6' off the ground. Was good enough for the summer A 67 foot vertical with many radials 16 X as an alternate. No preamp. Paul WB8TSL Near Boston Ma. On Sun, Dec 12, 2010 at 10:37 AM, Stan, W1LE stanw...@verizon.net wrote: Good Morning Claude, I am assembling a K9AY terminated loop antenna, pointing to N. Europe. (~30 degrees) Will use a ARR preamplifier at the antenna. I hope to start listening later this month. Some stations to listen for: Lessay, France master on GRI 6731, Soustons France, slave X BO , master on 7001, Jan Mayen, slave X, Berlevag slave Y Sylt, on 7499, Lessay, slave X, Vaerlandet, slave Y Eidi (Ejde) on 9007 master, Jan Mayen slave W,BO slave X, Vaerlandet slave Y From my location on Cape Cod FN41sr, looks like the closest active chain is Eidi with GRI of 9007 Eidi, IP62lh DX of 2900.1 miles Jan Mayen, IQ50pv, 2900.2 miles Lessay, IN99fd at 3274.1 miles Soustons, IN93hr at 3412.4 miles, (6731 GRI) I have not calculated BO, and Berlevag details (7001 GRI) nor for the Sylt chain. A google search on Loran C stations will show a listing of the few active stations with the station details like RF power output and Lat/Long. I have converted Lat/Long to 6 digit grid locator for my ease in LOB and DX calculations with BD2004 software. Sky wave propagation should be possible for the North Atlantic, European, Western Russia, Saudi, and Mediterranean chains. Low likelihood of any ground wave and its better accuracies. I miss my Nantucket Loran-C station and its Cs accuracies. A modern Stanford Research Systems model FS700 Loran C receiver is on hand as the receiver. Stan, W1LE Cape Cod FN41sr On 12/12/2010 8:17 AM, Claude Houde wrote: Hello everybody. Does anyone on the northern east coast has been sucessfull in receiving European Loran C chains ? I'm located around Montreal, Québec. If so, what type of antennas you used ? Thanks ! Claude Houde VA2 HDD ___ 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 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] Loran DX and Austron 2100
In message 61515.12.6.201.2.1292262311.squir...@popaccts.quikus.com, J. Fors ter writes: Relative to the old Iceland chain, the new 4-digit GRI's should be more immune to noise because 1kHz raster signals average out. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ 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] Loran DX and Austron 2100
Hi The one we had used a whip mounted to a preamp. The antenna was a separate line item on the PO, so you could pick which ever one you wanted to use. We wanted to sync to multiple chains, so the omni directional whip made sense. Never had an Austron loop, so I can't say which one was the better antenna. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of J. Forster Sent: Monday, December 13, 2010 12:45 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Loran DX and Austron 2100 ??? Both my Austron 2100Fs have Austron loops. -John Hi It's been a long time since I've tried this, but the Iceland chain was a reasonable catch from the central US with an Austron 2100 and the standard supplied whip antenna. Reception was ok at night and useless during the day. As I recall the signal was well above ( 20 db) the rated floor of the receiver at night. Local noise sources near the antenna are likely to be more of an issue than antenna type. Directivity can indeed help with that. Down there, what ever you use will need to be vertically polarized. If you do believe gain is the issue, a 30' vertical on a good ground / out in the clear may give you almost 14 db of gain over the normal 6' whip over who knows what (volts per meter ...). That assumes both are run into a high impedance preamp. Picking up the chains in Europe (or even Asia) is very do-able. The signal will be a sky wave only sort of thing. That limits it's use for timing. Certainly an entertaining way to pass the winter. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed Sent: Sunday, December 12, 2010 12:13 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Loran DX and Austron 2100 I had picked up the Lessay chain in the summer over night. But it was very unreliable. Have been waiting for winter to try again. I suppose it might be time but business travel will preclude a effort this week. I am off next week so that should be a good chance. My antennas are. Preamplified loran whip 6' off the ground. Was good enough for the summer A 67 foot vertical with many radials 16 X as an alternate. No preamp. Paul WB8TSL Near Boston Ma. On Sun, Dec 12, 2010 at 10:37 AM, Stan, W1LE stanw...@verizon.net wrote: Good Morning Claude, I am assembling a K9AY terminated loop antenna, pointing to N. Europe. (~30 degrees) Will use a ARR preamplifier at the antenna. I hope to start listening later this month. Some stations to listen for: Lessay, France master on GRI 6731, Soustons France, slave X BO , master on 7001, Jan Mayen, slave X, Berlevag slave Y Sylt, on 7499, Lessay, slave X, Vaerlandet, slave Y Eidi (Ejde) on 9007 master, Jan Mayen slave W,BO slave X, Vaerlandet slave Y From my location on Cape Cod FN41sr, looks like the closest active chain is Eidi with GRI of 9007 Eidi, IP62lh DX of 2900.1 miles Jan Mayen, IQ50pv, 2900.2 miles Lessay, IN99fd at 3274.1 miles Soustons, IN93hr at 3412.4 miles, (6731 GRI) I have not calculated BO, and Berlevag details (7001 GRI) nor for the Sylt chain. A google search on Loran C stations will show a listing of the few active stations with the station details like RF power output and Lat/Long. I have converted Lat/Long to 6 digit grid locator for my ease in LOB and DX calculations with BD2004 software. Sky wave propagation should be possible for the North Atlantic, European, Western Russia, Saudi, and Mediterranean chains. Low likelihood of any ground wave and its better accuracies. I miss my Nantucket Loran-C station and its Cs accuracies. A modern Stanford Research Systems model FS700 Loran C receiver is on hand as the receiver. Stan, W1LE Cape Cod FN41sr On 12/12/2010 8:17 AM, Claude Houde wrote: Hello everybody. Does anyone on the northern east coast has been sucessfull in receiving European Loran C chains ? I'm located around Montreal, Québec. If so, what type of antennas you used ? Thanks ! Claude Houde VA2 HDD ___ 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 mailing list -- time-nuts@febo.com To unsubscribe, go to
Re: [time-nuts] Loran DX and Austron 2100
Hi Certainly more immune to synchronous noise like RFI from switching power supplies. I haven't checked the ERP numbers on the chains. There may be some differences there. Some of the Asian chains used to pump out a *lot* of power. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Poul-Henning Kamp Sent: Monday, December 13, 2010 12:50 PM To: j...@quik.com; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Loran DX and Austron 2100 In message 61515.12.6.201.2.1292262311.squir...@popaccts.quikus.com, J. Fors ter writes: Relative to the old Iceland chain, the new 4-digit GRI's should be more immune to noise because 1kHz raster signals average out. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ 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] Motorola VC-TCXO
Has anyone seen or used these 10Mhz oscillators. $20 shipped seems a reasonable price. It's an un-used Motorola part. Maybe there is something better? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=280567398921ssPageName=STRK:MEWAX:IT I want to use them in a portable (battery powered) freq reference along with a chain of divide by 10 chips. I think at first I'll set it with a screw driver but I'd like to build an automatic feature using a microcontroller that syncs the portable reference to a lab oscillator that is running off GPS. My idea is that you connect it for a few minutes or over night. -- = Chris Albertson Redondo Beach, California ___ 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] Motorola VC-TCXO
I have one of these same exact modules which I purchased to use as a TXCO that I could then lock to an external standard in an HP Agilent 5314A Universal counter. My project hasn't moved beyond a very preliminary planning stage at the moment pending some more information on the device. I haven't been able to turn up much more than what the seller includes with the module being a simple diagram and instructions. I have yet to hook it up to power and see what it does. If you manage to dig up some more info on the device I would appreciate having it as well. Cheers, Graham ve3gtc -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Chris Albertson Sent: December 13, 2010 13:30 To: Discussion of precise time and frequency measurement Subject: [time-nuts] Motorola VC-TCXO Has anyone seen or used these 10Mhz oscillators. $20 shipped seems a reasonable price. It's an un-used Motorola part. Maybe there is something better? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=280567398921ssPageNa me=STRK:MEWAX:IT I want to use them in a portable (battery powered) freq reference along with a chain of divide by 10 chips. I think at first I'll set it with a screw driver but I'd like to build an automatic feature using a microcontroller that syncs the portable reference to a lab oscillator that is running off GPS. My idea is that you connect it for a few minutes or over night. -- = Chris Albertson Redondo Beach, California ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Motorola VC-TCXO
I looked at them awhile and passed. For 45$ and maybe S/H I can get an ovenized xtal oscillator ISOTEMP OCXO that is probably 3+ orders of magnitude better in accuracy/stability. Good at 12V DC also. Some with voltage control requiring only an external pot for fine tuning. So a search on Ebay. Stan, W1LE Cape Cod FN41sr On 12/13/2010 1:29 PM, Chris Albertson wrote: Has anyone seen or used these 10Mhz oscillators. $20 shipped seems a reasonable price. It's an un-used Motorola part. Maybe there is something better? http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=280567398921ssPageName=STRK:MEWAX:IT I want to use them in a portable (battery powered) freq reference along with a chain of divide by 10 chips. I think at first I'll set it with a screw driver but I'd like to build an automatic feature using a microcontroller that syncs the portable reference to a lab oscillator that is running off GPS. My idea is that you connect it for a few minutes or over night. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Motorola VC-TCXO
On Mon, Dec 13, 2010 at 10:56 AM, Stan, W1LE stanw...@verizon.net wrote: For 45$ and maybe S/H I can get an ovenized xtal oscillator ISOTEMP OCXO that is probably 3+ orders of magnitude better in accuracy/stability. Good at 12V DC also. Some with voltage control requiring only an external How much current do the ovenized OCXOs use.? Can they run on a small battery? -- = Chris Albertson Redondo Beach, California ___ 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] DJVU and PDF
Chris Albertson wrote: 2) Look at the developer documentation for Mac OSX's quartz graphic system. Very loosely, what you do is open a contex and then send PDF drawing comands to it. This can be directed to the screen of a file. The same is true of IOS devices like the iPad or iPod touch. If you are a programmer you basically writte PDF to the glass screen. I humbly stand corrected. -Chuck Harris ___ 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] Motorola VC-TCXO
The ISO TEMP ovens we have experience with draw 20-40ma for the oscillator and a couple hundred or so MA on oven start up, generally decreasing to 80 ma or so when the oven is at temp. Often the oven will be 28V and the oscillator will be 15V, although +5V oscillator and +12V oven examples are out there. Thank You Kiss-Electronics Ms Ashley Hall 183 N 5th Avenue Cornelius, Oregon 97113 W7DUZ www.kiss-electronics.com -Original Message- From: Chris Albertson albertson.ch...@gmail.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, Dec 13, 2010 11:18 am Subject: Re: [time-nuts] Motorola VC-TCXO On Mon, Dec 13, 2010 at 10:56 AM, Stan, W1LE stanw...@verizon.net wrote: For 45$ and maybe S/H I can get an ovenized xtal oscillator ISOTEMP OCXO that is probably 3+ orders of magnitude better in accuracy/stability. Good at 12V DC also. Some with voltage control requiring only an external How much current do the ovenized OCXOs use.? Can they run on a small battery? -- hris Albertson edondo Beach, California ___ ime-nuts mailing list -- time-nuts@febo.com o unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts nd 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] Motorola VC-TCXO
My portable battery is 12V at ~15 amp hours. it is good for the weekend of a ham radio contest from Friday's calibration/tweaking thru Sunday night. The OCXO stays powered up all weekend on its dedicated battery. I do not have hot/cold current draw in front of me, but as I recall is 100-200 milliamperes. Stan, W1LE On 12/13/2010 2:18 PM, Chris Albertson wrote: On Mon, Dec 13, 2010 at 10:56 AM, Stan, W1LEstanw...@verizon.net wrote: For 45$ and maybe S/H I can get an ovenized xtal oscillator ISOTEMP OCXO that is probably 3+ orders of magnitude better in accuracy/stability. Good at 12V DC also. Some with voltage control requiring only an external How much current do the ovenized OCXOs use.? Can they run on a small battery? ___ 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] Where 15 MHz?
Fellow time-nuts, A quick question to settle my curiosity... Which mobile application uses 15 MHz? I know that GSM uses 13 MHz, but I can't recall which one uses 15 MHz. I'd be happy if someone would care to enlighten me. We have also seen 19,6608 MHZ being in use, and recently seen a description for it, even if I fail to recall it. Cheers, Magnus ___ 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] Where 15 MHz?
Lucent Cell phone site GPSDO output 15 Mhz. Stanley - Original Message From: Magnus Danielson mag...@rubidium.dyndns.org To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Mon, December 13, 2010 6:10:14 PM Subject: [time-nuts] Where 15 MHz? Fellow time-nuts, A quick question to settle my curiosity... Which mobile application uses 15 MHz? I know that GSM uses 13 MHz, but I can't recall which one uses 15 MHz. I'd be happy if someone would care to enlighten me. We have also seen 19,6608 MHZ being in use, and recently seen a description for it, even if I fail to recall it. Cheers, Magnus ___ 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] Where 15 MHz?
On 12/14/2010 01:24 AM, Stanley Reynolds wrote: Lucent Cell phone site GPSDO output 15 Mhz. Yes, that I already know, but for what kind of equipment was it meant? Cheers, Magnus ___ 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] Where 15 MHz?
Looking at the age of some of it started with analog continued with TDMA and or CDMA not sure if it is still in use. Maybe analog used the non GPS stuff as the oldest was RB and XO but not GPS. Stanley - Original Message From: Magnus Danielson mag...@rubidium.dyndns.org To: time-nuts@febo.com Sent: Mon, December 13, 2010 6:26:55 PM Subject: Re: [time-nuts] Where 15 MHz? On 12/14/2010 01:24 AM, Stanley Reynolds wrote: Lucent Cell phone site GPSDO output 15 Mhz. Yes, that I already know, but for what kind of equipment was it meant? Cheers, Magnus ___ 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] (from HP list) Frequency Standards: BasicsandApplications
Oh yes I would agree On Sun, Dec 12, 2010 at 8:24 PM, WB6BNQ wb6...@cox.net wrote: For sure, The problem was not in the downloading. The real problem was in trying to read the damn thing as it gave my one cell brain a serious headache. BillWB6BNQ paul swed wrote: Thanks for the local copies. they downloaded fine and look like an interesting read. the other sites were quite a problem. Regards On Sun, Dec 12, 2010 at 6:20 PM, ?jim...@earthlink.net? wrote: ? Or its a bootleg copy and they were asked to take it down ? Sent via BlackBerry by AT?T ? ? -Original Message- ? From: Richard W. Solomon ?w1...@earthlink.net? ? Sender: time-nuts-boun...@febo.com ? Date: Sun, 12 Dec 2010 15:57:07 -0700 (GMT-07:00) ? To: Discussion of precise time and frequency measurement? ? time-n...@febo.com? ? Reply-To: Richard W. Solomon ?w1...@earthlink.net?, ?Discussion of precise time and frequency measurement ??time-n...@febo.com? ? Subject: Re: [time-nuts] (from HP list) Frequency Standards: Basics ?and Applications ? ? I get a file deleted error message ??? ? ? Perhaps it doesn't like Firefox ?? ? ? 73, Dick, W1KSZ ? ? ? -Original Message- ? ?From: paul swed ?paulsw...@gmail.com? ? ?Sent: Dec 12, 2010 2:09 PM ? ?To: Discussion of precise time and frequency measurement ? ? time-n...@febo.com? ? ?Subject: Re: [time-nuts] (from HP list) Frequency Standards: Basics and ? Applications ? ? ? ?Seems to just send you to ad links??? ? ? ? ?On Sun, Dec 12, 2010 at 3:30 PM, Joseph Gray ?jg...@zianet.com? wrote: ? ? ? ?? For those who don't have or want a Scribd account (you can't download ? ?? w/o one), here is a bookstore with links to a free copy: ? ?? ? ?? ? http://www.addebook.com/tech/engineer/frequency-standards-basics-and-applications_3817.html ? ?? ? ?? Joe Gray ? ?? W5JG ? ?? ? ?? On Sun, Dec 12, 2010 at 11:13 AM, ?k6...@comcast.net? wrote: ? ?? ? From the HP equipment list, thought it might be of interest here: ? ?? ? ? ?? ? - ? ?? ? ? ?? ? ? ?? ? Posted by: k6...@aol.com k6...@aol.com k6yaz ? ?? ? Sat Dec 11, 2010 8:16 pm (PST) ? ?? ? A useful and interesting textbook, Frequency Standards Basics and ? ?? Applications by Dr. Fritz Riehl, published in 2004, is available on ? ?? scribd.com for free download. It is 543 pages in length. ? ?? ? ? ?? ? It is a pure pdf file, not a scanned copy. ? ?? ? ? ?? ? Stuart ? ?? ? Los Angeles, CA ? ?? ? ? ?? ? - ? ?? ? ? ?? ? You need a facebook account or a free scribd account to download the ? pdf. ? ?? ? ? ?? ? 73 bob k6rtm ? ?? ? ? ?? ? ___ ? ?? ? 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 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 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] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Kind of went quite On Thu, Dec 9, 2010 at 6:53 PM, Dabney Crump dab...@dhcrump.com wrote: Hi Robert, Yes, its for the 10kHz output. Basically the units will be part of a set of timing computers that will be used at fixed locations to measure time intervals. That's very fast, how did you test it at that speed? Thanks - Dabney On 12/9/2010 3:02 PM, Robert Atkinson wrote: Hi Dabney, Why the Jupiter? I assume it's for the 10kHz output, but can't see where that applies to automotive timing. I have a couple of Jupiters and also have an interest in automotive speed events. The fastest speedometer I've designed and built so far did over 770MPH. Regards, Robert G8RPI. --- On Thu, 9/12/10, Dabney Crumpdab...@dhcrump.com wrote: From: Dabney Crumpdab...@dhcrump.com Subject: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: time-nuts@febo.com Date: Thursday, 9 December, 2010, 21:43 Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ 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 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] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140
Hi All, I don't suppose anyone found any of the Jupiter units over the weekend? Thanks - Dabney On 12/13/2010 06:23 PM, paul swed wrote: Kind of went quite On Thu, Dec 9, 2010 at 6:53 PM, Dabney Crumpdab...@dhcrump.com wrote: Hi Robert, Yes, its for the 10kHz output. Basically the units will be part of a set of timing computers that will be used at fixed locations to measure time intervals. That's very fast, how did you test it at that speed? Thanks - Dabney On 12/9/2010 3:02 PM, Robert Atkinson wrote: Hi Dabney, Why the Jupiter? I assume it's for the 10kHz output, but can't see where that applies to automotive timing. I have a couple of Jupiters and also have an interest in automotive speed events. The fastest speedometer I've designed and built so far did over 770MPH. Regards, Robert G8RPI. --- On Thu, 9/12/10, Dabney Crumpdab...@dhcrump.com wrote: From: Dabney Crumpdab...@dhcrump.com Subject: [time-nuts] WTB up to 10 pieces - Rockwell Jupiter - TU30-D140 To: time-nuts@febo.com Date: Thursday, 9 December, 2010, 21:43 Hi All, I'm looking for approximately 10 of the Jupiter GPS modules for a personal timing project; I time automotive speed events. I'm aware of the units available on eBay from Hong Kong but would like to try to source them from US markets first. Thanks for any assistance, Dabney in Denver 303-324-1084 ___ 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 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] Where 15 MHz?
Hi It turns out that 15 MHz x N (I forget the N) makes a nice LO in the 900 MHz range for an base station. That's what drove the choice of 15 over 5 or 10 MHz. I believe there was a bit of the all frequencies are equally cheap in your volumes sales pitch involved as well. Bob On Dec 13, 2010, at 7:10 PM, Magnus Danielson wrote: Fellow time-nuts, A quick question to settle my curiosity... Which mobile application uses 15 MHz? I know that GSM uses 13 MHz, but I can't recall which one uses 15 MHz. I'd be happy if someone would care to enlighten me. We have also seen 19,6608 MHZ being in use, and recently seen a description for it, even if I fail to recall it. Cheers, Magnus ___ 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.
