Re: [time-nuts] housing multiple GPS timing receivers in the same box.
Hi where is a good source of GPS receiver modules I need one which has 10kHz output to phase lock a quartz oscillator Thank you in advance Alex On 2/4/2014 9:32 AM, Brian Lloyd wrote: Get a signal splitter from minicircuits specifically designed with a passband tailored for GPS that has DC pass-through to power the antenna and LNA. If you can't find one that has DC pass-through then you will need to add a power injector to power the antenna/LNA. Here: http://www.minicircuits.com/pages/npa/ZAPD-2DC+.pdf On Tue, Feb 4, 2014 at 7:08 AM, mike cook michael.c...@sfr.fr wrote: Hi, Till now I have been putting receivers in individual boxes. So to limit the growing number of boxes, I want to put two Resolution-T SMT receivers in one box, sharing power and antenna inputs. My question is How best can I share the antenna input, minimizing any interference between the receivers? . Will any interference matter? For example, I can easily connect three bits of shielded coax in a Y , but will probably get reflections from each receiver. As the cables will only be about 15cm long, would it matter? How about the DC antenna supply? The antenna DC will NOT be powering an antenna as it passes through a DC blocked splitter used to share an antenna between most of my receivers. I might be able squeeze a Mini-Circuits splitter in the box and DC-block both outputs but that may be overkill. What discrete circuitry might be a replacement? Will the Y do it? Someone must have already succeeded with this type of config. Thanks in advance for your input. Regards, Mike ___ 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] housing multiple GPS timing receivers in the same box.
Le 5 févr. 2014 à 01:52, saidj...@aol.com a écrit : Michael, use a simple BNC T-splitter. Works perfectly for me as long as both GPS carry the same antenna voltage. No loss in signal quality evident from the C/No readings, and dirt-cheap. No need to over-complicate this. bye, Said Thanks Said, I'll take that route I think, though with SMA as it's a bit smaller. I'll just note here that I found that Mini-Circuits manufacture both through hole and smd parts covering the L1 band, so if I really needed the space I could try those. They are also much cheaper. Have a good one. In a message dated 2/4/2014 14:41:40 Pacific Standard Time, michael.c...@sfr.fr writes: ___ 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] housing multiple GPS timing receivers in the same box.
As has been discussed before, a splitter intended for home satellite systems is a cheap solution as they have the bandwidth and the DC pass required. I have one between a couple of Thunderbolts. It powers the antenna and shows antenna OK on both. Using a splitter is better than just a T as it does lend some isolation between the receivers. David On 2/4/14 4:50 PM, mike cook wrote: Le 4 févr. 2014 à 22:35, Volker Esper a écrit : http://www.ebay.de/itm/HP-58516A-GPS-1-4-signal-Distribution-Amplifier-Splitter-N-type-/300997787447?pt=US_Ham_Radio_Receivershash=item4614ddbf37 I think I should have said that my box is only 25mm high. So any splitter will have to be less. A Mini Circuits splitter will just about do it , but I would prefer a smaller solution. Am 04.02.2014 14:08, schrieb mike cook: Hi, Till now I have been putting receivers in individual boxes. So to limit the growing number of boxes, I want to put two Resolution-T SMT receivers in one box, sharing power and antenna inputs. My question is How best can I share the antenna input, minimizing any interference between the receivers? . Will any interference matter? For example, I can easily connect three bits of shielded coax in a Y , but will probably get reflections from each receiver. As the cables will only be about 15cm long, would it matter? How about the DC antenna supply? The antenna DC will NOT be powering an antenna as it passes through a DC blocked splitter used to share an antenna between most of my receivers. I might be able squeeze a Mini-Circuits splitter in the box and DC-block both outputs but that may be overkill. What discrete circuitry might be a replacement? Will the Y do it? Someone must have already succeeded with this type of config. Thanks in advance for your input. Regards, Mike ___ 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] housing multiple GPS timing receivers in the same box.
Get a signal splitter from minicircuits specifically designed with a passband tailored for GPS that has DC pass-through to power the antenna and LNA. If you can't find one that has DC pass-through then you will need to add a power injector to power the antenna/LNA. Here: http://www.minicircuits.com/pages/npa/ZAPD-2DC+.pdf On Tue, Feb 4, 2014 at 7:08 AM, mike cook michael.c...@sfr.fr wrote: Hi, Till now I have been putting receivers in individual boxes. So to limit the growing number of boxes, I want to put two Resolution-T SMT receivers in one box, sharing power and antenna inputs. My question is How best can I share the antenna input, minimizing any interference between the receivers? . Will any interference matter? For example, I can easily connect three bits of shielded coax in a Y , but will probably get reflections from each receiver. As the cables will only be about 15cm long, would it matter? How about the DC antenna supply? The antenna DC will NOT be powering an antenna as it passes through a DC blocked splitter used to share an antenna between most of my receivers. I might be able squeeze a Mini-Circuits splitter in the box and DC-block both outputs but that may be overkill. What discrete circuitry might be a replacement? Will the Y do it? Someone must have already succeeded with this type of config. Thanks in advance for your input. Regards, Mike ___ 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. -- Brian Lloyd, WB6RQN/J79BPL 706 Flightline Drive Spring Branch, TX 78070 br...@lloyd.com +1.916.877.5067 ___ 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] housing multiple GPS timing receivers in the same box.
http://www.ebay.de/itm/HP-58516A-GPS-1-4-signal-Distribution-Amplifier-Splitter-N-type-/300997787447?pt=US_Ham_Radio_Receivershash=item4614ddbf37 Am 04.02.2014 14:08, schrieb mike cook: Hi, Till now I have been putting receivers in individual boxes. So to limit the growing number of boxes, I want to put two Resolution-T SMT receivers in one box, sharing power and antenna inputs. My question is How best can I share the antenna input, minimizing any interference between the receivers? . Will any interference matter? For example, I can easily connect three bits of shielded coax in a Y , but will probably get reflections from each receiver. As the cables will only be about 15cm long, would it matter? How about the DC antenna supply? The antenna DC will NOT be powering an antenna as it passes through a DC blocked splitter used to share an antenna between most of my receivers. I might be able squeeze a Mini-Circuits splitter in the box and DC-block both outputs but that may be overkill. What discrete circuitry might be a replacement? Will the Y do it? Someone must have already succeeded with this type of config. Thanks in advance for your input. Regards, Mike ___ 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] housing multiple GPS timing receivers in the same box.
Le 4 févr. 2014 à 22:35, Volker Esper a écrit : http://www.ebay.de/itm/HP-58516A-GPS-1-4-signal-Distribution-Amplifier-Splitter-N-type-/300997787447?pt=US_Ham_Radio_Receivershash=item4614ddbf37 I think I should have said that my box is only 25mm high. So any splitter will have to be less. A Mini Circuits splitter will just about do it , but I would prefer a smaller solution. Am 04.02.2014 14:08, schrieb mike cook: Hi, Till now I have been putting receivers in individual boxes. So to limit the growing number of boxes, I want to put two Resolution-T SMT receivers in one box, sharing power and antenna inputs. My question is How best can I share the antenna input, minimizing any interference between the receivers? . Will any interference matter? For example, I can easily connect three bits of shielded coax in a Y , but will probably get reflections from each receiver. As the cables will only be about 15cm long, would it matter? How about the DC antenna supply? The antenna DC will NOT be powering an antenna as it passes through a DC blocked splitter used to share an antenna between most of my receivers. I might be able squeeze a Mini-Circuits splitter in the box and DC-block both outputs but that may be overkill. What discrete circuitry might be a replacement? Will the Y do it? Someone must have already succeeded with this type of config. Thanks in advance for your input. Regards, Mike ___ 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] housing multiple GPS timing receivers in the same box.
Hi Mike, that distribution amplifier is not optimized as low noise amplifier, therefore it's noise-figure most likely no to low, that will effect the GPS system, which get his antenna feed via that amplifier. That is valid even if you solve the problem of the preamplifier power feed. Regards Alex Pummer On 2/4/2014 1:35 PM, Volker Esper wrote: http://www.ebay.de/itm/HP-58516A-GPS-1-4-signal-Distribution-Amplifier-Splitter-N-type-/300997787447?pt=US_Ham_Radio_Receivershash=item4614ddbf37 Am 04.02.2014 14:08, schrieb mike cook: Hi, Till now I have been putting receivers in individual boxes. So to limit the growing number of boxes, I want to put two Resolution-T SMT receivers in one box, sharing power and antenna inputs. My question is How best can I share the antenna input, minimizing any interference between the receivers? . Will any interference matter? For example, I can easily connect three bits of shielded coax in a Y , but will probably get reflections from each receiver. As the cables will only be about 15cm long, would it matter? How about the DC antenna supply? The antenna DC will NOT be powering an antenna as it passes through a DC blocked splitter used to share an antenna between most of my receivers. I might be able squeeze a Mini-Circuits splitter in the box and DC-block both outputs but that may be overkill. What discrete circuitry might be a replacement? Will the Y do it? Someone must have already succeeded with this type of config. Thanks in advance for your input. Regards, Mike ___ 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] housing multiple GPS timing receivers in the same box.
Michael, use a simple BNC T-splitter. Works perfectly for me as long as both GPS carry the same antenna voltage. No loss in signal quality evident from the C/No readings, and dirt-cheap. No need to over-complicate this. bye, Said In a message dated 2/4/2014 14:41:40 Pacific Standard Time, michael.c...@sfr.fr writes: ___ 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.
