FS GPS DO
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Guys,
Used this to calibrate my Rubidium standard. Have no further use for it. Working unit is complete with power supply, GPS, active antenna interconnect cables and Windows software. See: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290322053618 for pix of it. Contact off reflector. Reasonable offers accepted. 73 de Brian/K3KO ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1390 / Virus Database: 1518/3805 - Release Date: 08/02/11 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Brian: For us guys out there that may not be familiar with a GPS DO how
about a little information. I visited the e-bay site and found the titled PRECISION GPS 10Mhz 1PPS picture. Now I can handle 10 MHz but what is 1PPS? One pulse per second? One part per picosecond? Is that long term or short term? Is that a 24 volt power supply? Does the power supply come with it? I also see it's refurbished. What part was refurbished and why? I would enquire offline but I bet there are a lot of others that would like to know too. Thanks, de Fred, AE6QL -----Original Message----- From: [hidden email] [mailto:[hidden email]] On Behalf Of Brian Alsop Sent: Wednesday, August 03, 2011 10:11 AM To: [hidden email] Subject: [Elecraft] FS GPS DO Guys, Used this to calibrate my Rubidium standard. Have no further use for it. Working unit is complete with power supply, GPS, active antenna interconnect cables and Windows software. See: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290322053618 for pix of it. Contact off reflector. Reasonable offers accepted. 73 de Brian/K3KO ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1390 / Virus Database: 1518/3805 - Release Date: 08/02/11 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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The unit in question is a Trimble Thunderbolt GPS -disciplined 10 MHz
oscillator. They are removed from last-generation E911 location equipment manufactured by Andrew Corp in Lynchburg, VA (my employer). A ton of them were surplussed out and wound up in the far East at a scrap dealer. They are fine units; they require +5, +12 and -7 to -12 Vdc to operate. The 1pps is 1 pulse-per-second. The other reference output is 10 MHz sine wave at from +10 to +13 dBm output. After disciplining, the outputs are within 10E-10 to 10E-12 of the GPS constellation master clock which is Cesium-based. In other words, they are infinitely better than anything required on HF for a reference, but if you are working at VHF up to microwaves, the frequency accuracy gets to be something worth considering. The one in the picture kind of looks like it was painted. The units were originally gold-alodined aluminum cases, and they came with a 3 dB splitter mounted to the top cover for splitting the 10 MHz output 2 ways. If you have any questions about the units, I'll try to answer them. 73, geo - n4ua On Wed, Aug 3, 2011 at 6:05 PM, Fred Townsend <[hidden email]>wrote: > Brian: For us guys out there that may not be familiar with a GPS DO how > about a little information. I visited the e-bay site and found the titled > PRECISION GPS 10Mhz 1PPS picture. Now I can handle 10 MHz but what is 1PPS? > One pulse per second? One part per picosecond? Is that long term or short > term? Is that a 24 volt power supply? Does the power supply come with it? I > also see it's refurbished. What part was refurbished and why? > > I would enquire offline but I bet there are a lot of others that would like > to know too. > > Thanks, > de Fred, AE6QL > > -----Original Message----- > From: [hidden email] > [mailto:[hidden email]] On Behalf Of Brian Alsop > Sent: Wednesday, August 03, 2011 10:11 AM > To: [hidden email] > Subject: [Elecraft] FS GPS DO > > Guys, > > Used this to calibrate my Rubidium standard. Have no further use for it. > > Working unit is complete with power supply, GPS, active antenna > interconnect > cables and Windows software. > > See: > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=290322053618 > for pix of it. > > Contact off reflector. Reasonable offers accepted. > > 73 de Brian/K3KO > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > Version: 10.0.1390 / Virus Database: 1518/3805 - Release Date: 08/02/11 > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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