Re: [time-nuts] GPSDO choices
Dave, I have an LC_XO and a GPSDO, both from Jackson Labs. There are more than just a few of us also that are a part of the OpenHPSDR effort that have evaluated the units (GPSDO) for over 1 year now (I have a project that is a bit overdue...but that is another story...) But, I haven't seen one single negative comment from anyone regarding these units. For the money - it is a good/great deal. I just bread-boarded the LC_XO I have for a test and it worked fine. I have one of those connector kits from Samtec and one of those breakout kits from FTDI, plus power supply - and that was it to get a nice evaluation going. I am working on a PCB this unit fits into - it is near completion - but that is for the HPSDR project. It will run standalone and on batteries. But, the board is 'feature-rich' and goes beyond just something to have the LC_XO on. 73's, John AJ6BC On Wed, Oct 30, 2013 at 6:11 PM, quartz55 quart...@hughes.net wrote: Is this JL LC_XO at around $300 going to supress the used Trimble/Zwhatever market price? I hope so. I think I would have put out the $ for this one rather than a 10 or more year old used piece of equipment. I still may do it. I just need to justify it somehow. Dave N3DT ___ 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] GPSDO choices
Hi The Jackson Labs part has been around for a while. It seems to have no impact at all on the auction market prices for GPSDO’s. They seem to simply be driven by supply and demand for this or that very specific box. Even the availability of the NTBW parts at $135 has had no noticeable impact on the upward spiral in prices for the older equivalent parts. Bob On Oct 30, 2013, at 9:11 PM, quartz55 quart...@hughes.net wrote: Is this JL LC_XO at around $300 going to supress the used Trimble/Zwhatever market price? I hope so. I think I would have put out the $ for this one rather than a 10 or more year old used piece of equipment. I still may do it. I just need to justify it somehow. Dave N3DT ___ 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] GPSDO choices
Paul, try the Jackson Labs GPSTCXO eval kit. Comes with GPS antenna, USB comm/power cable, and board. You can get a Hammond enclosure for it for less than $20, and have a complete desktop system for less than $400 new. Probably the lowest-cost new way to go other than Ebay-used or homemade. bye, Said In a message dated 10/3/2013 20:30:55 Pacific Daylight Time, tic-...@bodosom.net writes: I'm looking for a new, ready to go, inexpensive desktop GPSDO. So far I've only found the Fury and Thunderbolt E. Are there other reasonable choices e.g. the J R Miller (although I'm not sure there's a source of new TU-30 parts). Thanks. -- Paul *Say $2k ___ 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] GPSDO choices
Paul, I can speak for a few of us over in the OpenHPSDR group that are also 'time-nuts' - We have the GPSTCXO eval kit that Said is speaking of and we have been very satisfied. It is a great fit for what we're doing. We are working on a new board now that is near completion that can either have the GPSTXCO module or the LC_XO module - and if you want to use both at the same time I suppose you can do that too if you're careful. ;) (The new board can be used in a standalone mode or can be connected to the HPSDR backplane we call the Atlas bus - a mini-VME like chassis connector.) I did recently get an LC_XO unit as well and have looked at that with GPSCon, my scope, etc. - performs (I think) identically to the GPSTCXO plus a few other features. I think some of the people in this group have plots they can share with you. Don't be fooled by the name of this group - the 'real experts' are here. Don't be bashful about asking them questions. I am a neophyte in this area but I am fascinated by what this group is about plus how the GPS birds (satellites) work. 73's (Best Regards), John Westmoreland AJ6BC (Call sign) On Mon, Oct 7, 2013 at 1:52 PM, saidj...@aol.com wrote: Paul, try the Jackson Labs GPSTCXO eval kit. Comes with GPS antenna, USB comm/power cable, and board. You can get a Hammond enclosure for it for less than $20, and have a complete desktop system for less than $400 new. Probably the lowest-cost new way to go other than Ebay-used or homemade. bye, Said In a message dated 10/3/2013 20:30:55 Pacific Daylight Time, tic-...@bodosom.net writes: I'm looking for a new, ready to go, inexpensive desktop GPSDO. So far I've only found the Fury and Thunderbolt E. Are there other reasonable choices e.g. the J R Miller (although I'm not sure there's a source of new TU-30 parts). Thanks. -- Paul *Say $2k ___ 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] GPSDO choices
On Mon, Oct 7, 2013 at 2:52 PM, saidj...@aol.com wrote: Paul, try the Jackson Labs GPSTCXO eval kit. On Mon, Oct 7, 2013 at 5:59 PM, John C. Westmoreland, P.E. j...@westmorelandengineering.com wrote: We have the GPSTCXO eval kit that Said is speaking of and we have been very satisfied. I have one. It's nice but I want a 1PPS BNC too (without soldering) and no more tiny antenna connectors. -- Paul ___ 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] GPSDO choices
What did it cost? When I inquired, the price was horrendous. Jim wb4...@amsat.org On 10/7/2013 7:28 PM, Paul wrote: On Mon, Oct 7, 2013 at 2:52 PM, saidj...@aol.com wrote: Paul, try the_Jackson Labs GPSTCXO eval kit_. On Mon, Oct 7, 2013 at 5:59 PM, John C. Westmoreland, P.E. j...@westmorelandengineering.com wrote: We have the GPSTCXO eval kit that Said is speaking of and we have been very satisfied. I have one. It's nice but I want a 1PPS BNC too (without soldering) and no more tiny antenna connectors. -- Paul ___ 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] GPSDO choices
Paul, I don't want to speak too soon or appear to be tooting the HPSDR horn - but the Khronos board (Khronos is the name of the board that I mentioned in the previous e-mail) has that. I didn't realize the issue here was the BNC connector and your dislike of the MMCX style connector that is pretty much a standard for passive GPS antennas (I guess any GPS antenna). The Khronos connector for the LC_XO option for the antenna is a standard footprint and you can put what you want on that. What type of connector do you prefer for the GPS antenna? Pasternack, Samtec, Mini-Circuits, Digi-Key are all your friends in these situations - but if you prefer not to solder or to DIY, then it could be difficult to find everything you like in one package unless you custom order it or have a friend that can put it together for you. I am a customer of Metcal - I have a lot of their top-of-the-line equipment, so soldering/rework to me is almost a way of life. Best Regards, John Westmoreland On Mon, Oct 7, 2013 at 6:28 PM, Paul tic-...@bodosom.net wrote: On Mon, Oct 7, 2013 at 2:52 PM, saidj...@aol.com wrote: Paul, try the Jackson Labs GPSTCXO eval kit. On Mon, Oct 7, 2013 at 5:59 PM, John C. Westmoreland, P.E. j...@westmorelandengineering.com wrote: We have the GPSTCXO eval kit that Said is speaking of and we have been very satisfied. I have one. It's nice but I want a 1PPS BNC too (without soldering) and no more tiny antenna connectors. -- Paul ___ 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] GPSDO choices
On Mon, Oct 7, 2013 at 7:53 PM, Jim Sanford wb4...@wb4gcs.org wrote: What did it cost? There's a hobbyist price. It was less than $400. ___ 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] GPSDO choices
On Mon, Oct 7, 2013 at 8:01 PM, John C. Westmoreland, P.E. j...@westmorelandengineering.com wrote: I didn't realize the issue here was the BNC connector and your dislike of the MMCX style connector that is pretty much a standard for passive GPS antennas (I guess any GPS antenna). SMA is fine, likewise F, N or even SMB. I don't like MCX, MMCX, FME, uFL or similar because I have mature vision. By count my most common GPS antenna connector is SMA followed by N. The GPS receivers are a richer mix. ___ 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] GPSDO choices
Paul, OK - that is good information. I have mature vision too - got these bifocal contact lenses that take some getting adjusted to. But I am blind without my Pro's Kit MA-016 head-gear which has become a required piece of equipment when I work these days. Best Regards, John On Mon, Oct 7, 2013 at 9:15 PM, Paul tic-...@bodosom.net wrote: On Mon, Oct 7, 2013 at 8:01 PM, John C. Westmoreland, P.E. j...@westmorelandengineering.com wrote: I didn't realize the issue here was the BNC connector and your dislike of the MMCX style connector that is pretty much a standard for passive GPS antennas (I guess any GPS antenna). SMA is fine, likewise F, N or even SMB. I don't like MCX, MMCX, FME, uFL or similar because I have mature vision. By count my most common GPS antenna connector is SMA followed by N. The GPS receivers are a richer mix. ___ 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] GPSDO choices
The Novus at www.synreference.net Sent from my iPhone On Oct 3, 2013, at 11:24 PM, Paul tic-...@bodosom.net wrote: I'm looking for a new, ready to go, inexpensive desktop GPSDO. So far I've only found the Fury and Thunderbolt E. Are there other reasonable choices e.g. the J R Miller (although I'm not sure there's a source of new TU-30 parts). Thanks. -- Paul *Say $2k ___ 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] GPSDO choices
Hi Paul, I purchased one of the Miller units and it more than met my expectations (that were set by the description on his web site and the information I was able to find on the web.) I also purchased a Fury which also more than met my expectations. I would have no issues repeating either purchase. Depending on your needs and budget both units could be reasonable choices. For what it is worth when I purchased the Miller unit I was looking for a 10 Mhz frequency standard for use with my amateur radios, when I purchased the Fury I was looking for a new GPSDO for time nuts hobby useage. I also own several other GPSDO's including a surplus Thunderbolt. The nominal 12 Volt power requirements of both the Miller and Fury units are a plus for me but in practice I have never run my Fury from any source other than the power supply that was shipped with it. If you would like more specfic info feel free to contact me off list and I can try to help. Regards Mark Spencer -- On Oct 3, 2013, at 11:24 PM, Paul tic-...@bodosom.net wrote: Iapos;m looking for a new, ready to go, inexpensive desktop GPSDO. So far Iapos;ve only found the Fury and Thunderbolt E. Are there other reasonable choices e.g. the J R Miller (although Iapos;m not sure thereapos;s a source of new TU-30 parts). Thanks. -- Paul *Say $2k ___ 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] GPSDO choices
Paul, I picked up a TrueTime XL-AK for under $200 on eBay a couple of years ago. Advertised at better than 1 x 10 -12. RS232 interface and 1 PPS out as well as 10 mhz out and many options. Seems to work well with any of the 5 volt antennas I've used. One rack unit high. Have been quite happy with it but then, maybe I don't know any better. Al Wolfe I'm looking for a new, ready to go, inexpensive desktop GPSDO. So far I've only found the Fury and Thunderbolt E. Are there other reasonable choices e.g. the J R Miller (although I'm not sure there's a source of new TU-30 parts). Thanks. -- Paul *Say $2k ___ 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.
