Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
Noticed that one of my 5680 units was a bit unstable at times. Reglued the crystal back on to the board and it it happy! 73, Bill, WA2DVU Cape May, NJ ons 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] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
I got mine for around $25 in a regular bidding affair. Mine had trouble locking, It only locked a handful of times, and that took forever, but most of the time it just sat there and cooked. The seller replaced it and the new locks up in 2 or 3 minutes. I did not have to ship the old one back. The Lock output signal doesn't seem to have enough drive to turn on an LED. Bob - Original Message - From: Peter Gottlieb n...@verizon.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Monday, January 02, 2012 9:07 PM Subject: Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one I grabbed another one for another project. Seller was asking $42.99 and I offered 38.00. He countered at 39.00 and I accepted. Still a great bargain, it would cost me much more than that to replace the failing OCXO it replaces. On 12/28/2011 6:35 PM, Pete Lancashire wrote: My 2nd one a make offer, was $38 anything under $40 and I happy. It has not arrived yet, suppose to have a OCXO -pete On Wed, Dec 28, 2011 at 2:31 PM, paul swedpaulsw...@gmail.com wrote: Well been watching the threads on this RB ref and finally ordered one. Good to see the lower price with shipping. It does not come with the OCXO. No loss for me. Now lets see if it ever shows up? Regards Paul WB8TSL ___ 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. - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1415 / Virus Database: 2109/4117 - Release Date: 01/01/12 ___ 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.
Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
If you don't want the bad one I would be interested so I could disassemble and diagram it out. I don't want to do that to a good one. On 01/03/12, Robert Benwardrbenw...@verizon.net wrote: I got mine for around $25 in a regular bidding affair. Mine had trouble locking, It only locked a handful of times, and that took forever, but most of the time it just sat there and cooked. The seller replaced it and the new locks up in 2 or 3 minutes. I did not have to ship the old one back. The Lock output signal doesn't seem to have enough drive to turn on an LED. Bob - Original Message - From: Peter Gottlieb [1]n...@verizon.net To: Discussion of precise time and frequency measurement [2]time-nuts@febo.com Sent: Monday, January 02, 2012 9:07 PM Subject: Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one I grabbed another one for another project. Seller was asking $42.99 and I offered 38.00. He countered at 39.00 and I accepted. Still a great bargain, it would cost me much more than that to replace the failing OCXO it replaces. On 12/28/2011 6:35 PM, Pete Lancashire wrote: My 2nd one a make offer, was $38 anything under $40 and I happy. It has not arrived yet, suppose to have a OCXO -pete On Wed, Dec 28, 2011 at 2:31 PM, paul swed[3]paulsw...@gmail.com wrote: Well been watching the threads on this RB ref and finally ordered one. Good to see the lower price with shipping. It does not come with the OCXO. No loss for me. Now lets see if it ever shows up? Regards Paul WB8TSL ___ time-nuts mailing list -- [4]time-nuts@febo.com To unsubscribe, go to [5]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- [6]time-nuts@febo.com To unsubscribe, go to [7]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. - No virus found in this message. Checked by AVG - [8]www.avg.com Version: 10.0.1415 / Virus Database: 2109/4117 - Release Date: 01/01/12 ___ time-nuts mailing list -- [9]time-nuts@febo.com To unsubscribe, go to [10]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. References 1. mailto:n...@verizon.net 2. mailto:time-nuts@febo.com 3. mailto:paulsw...@gmail.com 4. mailto:time-nuts@febo.com 5. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts 6. mailto:time-nuts@febo.com 7. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts 8. http://www.avg.com/ 9. mailto:time-nuts@febo.com 10. 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] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
On 1/3/2012 8:20 AM, Robert Benward wrote: I got mine for around $25 in a regular bidding affair. Mine had trouble locking, It only locked a handful of times, and that took forever, but most of the time it just sat there and cooked. The seller replaced it and the new locks up in 2 or 3 minutes. I did not have to ship the old one back. The Lock output signal doesn't seem to have enough drive to turn on an LED. One of the three FE-5680A units I got behaved exactly that way. Turns out some part of a VCXO circuit had drifted over time (I assume) so the free-running frequency never quite reached up to 10.000 MHz enabling lock to the signal from the physics package. Assuming you do have a 10 MHz output signal, put a counter on it while it is warming up and look at the frequency. After I fixed it, the frequency vs time from startup plot looked like this: https://picasaweb.google.com/lh/photo/7E22rkh_YivyesrnTog6atMTjNZETYmyPJy0liipFm0?feat=directlink The fix was to take off case top and bottom and tweak the trimmer cap marked C217 slightly, it is near Y200 (crystal with round PTC thermistor attached). Here's a photo of that part of the board: https://picasaweb.google.com/109928236040342205185/FE5680A?authkey=djqVhWs9LkM#5680683008490223330 Of course there may be some completely different problem with your unit, but it's something to try, if you want to open it up and play with it. -John Beale ___ 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] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
Peter, Sure, If I can have a copy of what you produce. Send me your address. I assume you are in the US? If you look on Ebay, this is one of those that was mounted on a PCB with an aux 68MHz osc and DB9 connector. Bob - Original Message - From: Peter Gottlieb n...@verizon.net To: time-nuts@febo.com Sent: Tuesday, January 03, 2012 1:18 PM Subject: Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one If you don't want the bad one I would be interested so I could disassemble and diagram it out. I don't want to do that to a good one. On 01/03/12, Robert Benwardrbenw...@verizon.net wrote: I got mine for around $25 in a regular bidding affair. Mine had trouble locking, It only locked a handful of times, and that took forever, but most of the time it just sat there and cooked. The seller replaced it and the new locks up in 2 or 3 minutes. I did not have to ship the old one back. The Lock output signal doesn't seem to have enough drive to turn on an LED. Bob - Original Message - From: Peter Gottlieb [1]n...@verizon.net To: Discussion of precise time and frequency measurement [2]time-nuts@febo.com Sent: Monday, January 02, 2012 9:07 PM Subject: Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one I grabbed another one for another project. Seller was asking $42.99 and I offered 38.00. He countered at 39.00 and I accepted. Still a great bargain, it would cost me much more than that to replace the failing OCXO it replaces. On 12/28/2011 6:35 PM, Pete Lancashire wrote: My 2nd one a make offer, was $38 anything under $40 and I happy. It has not arrived yet, suppose to have a OCXO -pete On Wed, Dec 28, 2011 at 2:31 PM, paul swed[3]paulsw...@gmail.com wrote: Well been watching the threads on this RB ref and finally ordered one. Good to see the lower price with shipping. It does not come with the OCXO. No loss for me. Now lets see if it ever shows up? Regards Paul WB8TSL ___ time-nuts mailing list -- [4]time-nuts@febo.com To unsubscribe, go to [5]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- [6]time-nuts@febo.com To unsubscribe, go to [7]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. - No virus found in this message. Checked by AVG - [8]www.avg.com Version: 10.0.1415 / Virus Database: 2109/4117 - Release Date: 01/01/12 ___ time-nuts mailing list -- [9]time-nuts@febo.com To unsubscribe, go to [10]https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. References 1. mailto:n...@verizon.net 2. mailto:time-nuts@febo.com 3. mailto:paulsw...@gmail.com 4. mailto:time-nuts@febo.com 5. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts 6. mailto:time-nuts@febo.com 7. https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts 8. http://www.avg.com/ 9. mailto:time-nuts@febo.com 10. 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] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
Hi John, I did you what you suggested and it locks now. I tweaked so that the output is only 10-20Hz above 10MHz. It seems to lock on the way down from the peak (high) frequency, it doesn't seem to lock on the way up. It seems to agree with one of your plots, but no the other. You don't say what he difference is between the plots. It is sensitive to vibration, it seem to unlock easily when bumped. Do you know what the other trimmer is for? Bob - Original Message - From: John Beale be...@bealecorner.com To: time-nuts@febo.com Sent: Tuesday, January 03, 2012 1:29 PM Subject: Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one On 1/3/2012 8:20 AM, Robert Benward wrote: I got mine for around $25 in a regular bidding affair. Mine had trouble locking, It only locked a handful of times, and that took forever, but most of the time it just sat there and cooked. The seller replaced it and the new locks up in 2 or 3 minutes. I did not have to ship the old one back. The Lock output signal doesn't seem to have enough drive to turn on an LED. One of the three FE-5680A units I got behaved exactly that way. Turns out some part of a VCXO circuit had drifted over time (I assume) so the free-running frequency never quite reached up to 10.000 MHz enabling lock to the signal from the physics package. Assuming you do have a 10 MHz output signal, put a counter on it while it is warming up and look at the frequency. After I fixed it, the frequency vs time from startup plot looked like this: https://picasaweb.google.com/lh/photo/7E22rkh_YivyesrnTog6atMTjNZETYmyPJy0liipFm0?feat=directlink The fix was to take off case top and bottom and tweak the trimmer cap marked C217 slightly, it is near Y200 (crystal with round PTC thermistor attached). Here's a photo of that part of the board: https://picasaweb.google.com/109928236040342205185/FE5680A?authkey=djqVhWs9LkM#5680683008490223330 Of course there may be some completely different problem with your unit, but it's something to try, if you want to open it up and play with it. -John Beale ___ 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] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
I grabbed another one for another project. Seller was asking $42.99 and I offered 38.00. He countered at 39.00 and I accepted. Still a great bargain, it would cost me much more than that to replace the failing OCXO it replaces. On 12/28/2011 6:35 PM, Pete Lancashire wrote: My 2nd one a make offer, was $38 anything under $40 and I happy. It has not arrived yet, suppose to have a OCXO -pete On Wed, Dec 28, 2011 at 2:31 PM, paul swedpaulsw...@gmail.com wrote: Well been watching the threads on this RB ref and finally ordered one. Good to see the lower price with shipping. It does not come with the OCXO. No loss for me. Now lets see if it ever shows up? Regards Paul WB8TSL ___ 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. - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1415 / Virus Database: 2109/4117 - Release Date: 01/01/12 ___ 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.
Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
Which of thse Rb's have a programable frequency output? I would like to get one that can be set up to output 10.230 MHz for a GPS simulator. 73's, Doug, K4CLE Connected by DROID on Verizon Wireless -Original message- From: Peter Gottlieb n...@verizon.net To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Tue, Jan 3, 2012 02:07:32 GMT+00:00 Subject: Re: [time-nuts] FE 5680a 3pay 36.89 includes shipping. Finally ordered one I grabbed another one for another project. Seller was asking $42.99 and I offered 38.00. He countered at 39.00 and I accepted. Still a great bargain, it would cost me much more than that to replace the failing OCXO it replaces. On 12/28/2011 6:35 PM, Pete Lancashire wrote: My 2nd one a make offer, was $38 anything under $40 and I happy. It has not arrived yet, suppose to have a OCXO -pete On Wed, Dec 28, 2011 at 2:31 PM, paul swedpaulsw...@gmail.com wrote: Well been watching the threads on this RB ref and finally ordered one. Good to see the lower price with shipping. It does not come with the OCXO. No loss for me. Now lets see if it ever shows up? Regards Paul WB8TSL ___ 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. - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1415 / Virus Database: 2109/4117 - Release Date: 01/01/12 ___ 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 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] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
My 2nd one a make offer, was $38 anything under $40 and I happy. It has not arrived yet, suppose to have a OCXO -pete On Wed, Dec 28, 2011 at 2:31 PM, paul swed paulsw...@gmail.com wrote: Well been watching the threads on this RB ref and finally ordered one. Good to see the lower price with shipping. It does not come with the OCXO. No loss for me. Now lets see if it ever shows up? Regards Paul WB8TSL ___ 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] FE 5680a 3pay 36.89 includes shipping. Finally ordered one
Yes indeed the previous low price jumped to $43 On Wed, Dec 28, 2011 at 6:35 PM, Pete Lancashire p...@petelancashire.comwrote: My 2nd one a make offer, was $38 anything under $40 and I happy. It has not arrived yet, suppose to have a OCXO -pete On Wed, Dec 28, 2011 at 2:31 PM, paul swed paulsw...@gmail.com wrote: Well been watching the threads on this RB ref and finally ordered one. Good to see the lower price with shipping. It does not come with the OCXO. No loss for me. Now lets see if it ever shows up? Regards Paul WB8TSL ___ 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.
