Re: [time-nuts] Oscillator frequency?
Boy have to say no clue and not a very useful frequency. Would it make a nice bookend? Paper weight. Glue a watch to it and you have at least time. ;-) Regards Paul WB8TSL On Wed, Oct 3, 2012 at 9:07 AM, ken johnson bats...@gmail.com wrote: Hi, I have a tcxo that I recovered from a very old, suitcase-sized gps receiver some years ago. The oscillator is marked ERC Eros-750-MA110, with an output frequency of 5.119155MHz. I have tried to think of a use for for it but failed. I played with the numbers but could not find anything useful, so I thought I would try the collective wisdom of the list to see if anyone could come up with a use for such an oddball frequency. As an aside, it was fascinating to see a gps in discrete components, lots of mixers (I recovered no less than 10, MCL ASK1 mixers and there are still several left on the boards) on something like 7 or 8 , 200mm square, gold-plated plug-in boards on a very nice card frame with many, many interconnecting small-diameter coaxes with gold-plated connectors. Pity I wasn't interested in time-nuttery at the time, it probably worked before I reduced it to component parts! Thanks, Ken www.vk7krj.com ___ 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] Oscillator frequency?
Yes, it would be interesting to run such a GPS receiver: maybe there are numbers of points to follow the signal processing. On Wed, Oct 3, 2012 at 3:12 PM, paul swed paulsw...@gmail.com wrote: Boy have to say no clue and not a very useful frequency. Would it make a nice bookend? Paper weight. Glue a watch to it and you have at least time. ;-) Regards Paul WB8TSL On Wed, Oct 3, 2012 at 9:07 AM, ken johnson bats...@gmail.com wrote: Hi, I have a tcxo that I recovered from a very old, suitcase-sized gps receiver some years ago. The oscillator is marked ERC Eros-750-MA110, with an output frequency of 5.119155MHz. I have tried to think of a use for for it but failed. I played with the numbers but could not find anything useful, so I thought I would try the collective wisdom of the list to see if anyone could come up with a use for such an oddball frequency. As an aside, it was fascinating to see a gps in discrete components, lots of mixers (I recovered no less than 10, MCL ASK1 mixers and there are still several left on the boards) on something like 7 or 8 , 200mm square, gold-plated plug-in boards on a very nice card frame with many, many interconnecting small-diameter coaxes with gold-plated connectors. Pity I wasn't interested in time-nuttery at the time, it probably worked before I reduced it to component parts! Thanks, Ken www.vk7krj.com ___ 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] Oscillator frequency?
Hi Ken: I have two of these, and had the same problem some years ago (see archives time-nuts). Nothing seemed to need this frequency. Fast forward to present. I'm using an ICOM 260A 2m all-mode xceiver for if in a 13 cm moonbounce system. The xtal frequency for the basic synthesizer in these units is 5.12 MHz. I played around with the idea of separate better xtals, until one day I was cleaning out. DOH! I now have a use for those weird OCXO's! Soo... never throw anything away, and never dismay, for all weird stuff WILL be useful someday. There's a coarse adjustment of some kind on these units. 73, Don AJ7LL ken johnson Hi, I have a tcxo that I recovered from a very old, suitcase-sized gps receiver some years ago. The oscillator is marked ERC Eros-750-MA110, with an output frequency of 5.119155MHz. I have tried to think of a use for for it but failed. I played with the numbers but could not find anything useful, so I thought I would try the collective wisdom of the list to see if anyone could come up with a use for such an oddball frequency. As an aside, it was fascinating to see a gps in discrete components, lots of mixers (I recovered no less than 10, MCL ASK1 mixers and there are still several left on the boards) on something like 7 or 8 , 200mm square, gold-plated plug-in boards on a very nice card frame with many, many interconnecting small-diameter coaxes with gold-plated connectors. Pity I wasn't interested in time-nuttery at the time, it probably worked before I reduced it to component parts! Thanks, Ken www.vk7krj.com ___ 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. -- Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind. De Erroribus Medicorum, R. Bacon, 13th century. If you don't know what it is, don't poke it. Ghost in the Shell Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com ___ 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] Oscillator frequency?
5.12MHz is often used as the reference for PLL channelised radio receivers. Alan G3NYK - Original Message - From: Don Latham d...@montana.com To: Discussion of precise time and frequency measurement time-nuts@febo.com Sent: Wednesday, October 03, 2012 6:28 PM Subject: Re: [time-nuts] Oscillator frequency? Hi Ken: I have two of these, and had the same problem some years ago (see archives time-nuts). Nothing seemed to need this frequency. Fast forward to present. I'm using an ICOM 260A 2m all-mode xceiver for if in a 13 cm moonbounce system. The xtal frequency for the basic synthesizer in these units is 5.12 MHz. I played around with the idea of separate better xtals, until one day I was cleaning out. DOH! I now have a use for those weird OCXO's! Soo... never throw anything away, and never dismay, for all weird stuff WILL be useful someday. There's a coarse adjustment of some kind on these units. 73, Don AJ7LL ken johnson Hi, I have a tcxo that I recovered from a very old, suitcase-sized gps receiver some years ago. The oscillator is marked ERC Eros-750-MA110, with an output frequency of 5.119155MHz. I have tried to think of a use for for it but failed. I played with the numbers but could not find anything useful, so I thought I would try the collective wisdom of the list to see if anyone could come up with a use for such an oddball frequency. As an aside, it was fascinating to see a gps in discrete components, lots of mixers (I recovered no less than 10, MCL ASK1 mixers and there are still several left on the boards) on something like 7 or 8 , 200mm square, gold-plated plug-in boards on a very nice card frame with many, many interconnecting small-diameter coaxes with gold-plated connectors. Pity I wasn't interested in time-nuttery at the time, it probably worked before I reduced it to component parts! Thanks, Ken www.vk7krj.com ___ 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. -- Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind. De Erroribus Medicorum, R. Bacon, 13th century. If you don't know what it is, don't poke it. Ghost in the Shell Dr. Don Latham AJ7LL Six Mile Systems LLP 17850 Six Mile Road POB 134 Huson, MT, 59846 VOX 406-626-4304 www.lightningforensics.com www.sixmilesystems.com ___ 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] Oscillator frequency?
Thanks Don and Allen, it's been that long since I played with radio I had forgotten- 5.12 is half of 10.240 used to downconvert from 10.7 if to 455. I had a look through the circuits for my rigs, and my Eddystone 770r boat anchor uses 5.12MHz to align the various if's, and multiples of it to align various other bits, so the ocxo may yet come in handy. Of course, that means I now need to look for yet another round tuit for that job- there never seems to be enough round tuits for the jobs currently on hand, let alone new ones.. On 2012-10-04 03:28, Don Latham wrote: Hi Ken: I have two of these, and had the same problem some years ago (see archives time-nuts). Nothing seemed to need this frequency. Fast forward to present. I'm using an ICOM 260A 2m all-mode xceiver for if in a 13 cm moonbounce system. The xtal frequency for the basic synthesizer in these units is 5.12 MHz. I played around with the idea of separate better xtals, until one day I was cleaning out. DOH! I now have a use for those weird OCXO's! Soo... never throw anything away, and never dismay, for all weird stuff WILL be useful someday. There's a coarse adjustment of some kind on these units. 73, Don AJ7LL Ken, vk7krj www.vk7krj.com ___ 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.
