Re: [time-nuts] MiniMac 2816AT

2011-03-07 Thread Jim Palfreyman
Well I think there is a difference between the 2816 and the 2816AT. I think the 2816 is indeed portable. This is definitely not. So the AT is the stay-at-home- unit. The power supply on this one looked like a typical old-style PC switching power supply sending out 5V, 12V and -12V. On input it had

Re: [time-nuts] MiniMac 2816AT

2011-03-07 Thread Magnus Danielson
On 03/07/2011 07:41 PM, Hal Murray wrote: I love the "lightweight" comment. It has to weigh 20kg! Is there a Moore's law for size/weight of GPS receivers? Has anybody plotted it? Should be possible, but one should consider similar properties like L1/L2 carrier phase tracking and storage.

Re: [time-nuts] MiniMac 2816AT

2011-03-07 Thread Hal Murray
> I love the "lightweight" comment. > It has to weigh 20kg! Is there a Moore's law for size/weight of GPS receivers? Has anybody plotted it? -- These are my opinions, not necessarily my employer's. I hate spam. ___ time-nuts mailing list -- tim

Re: [time-nuts] MiniMac 2816AT

2011-03-07 Thread Jim Palfreyman
I love the "lightweight" comment. It has to weigh 20kg! On 7 March 2011 19:19, wrote: > It seems to be an L1/L2 dual frequency surveying receiver. > Searching for "minimac 2816", without the "AT", seemed to produce a few > more results with the following from 1988 amongst them > > _http://

Re: [time-nuts] MiniMac 2816AT

2011-03-07 Thread bg
In some references it is said to replace the TI-4100. Maybe something to document at http://www.ion.org/museum/cat_view.cfm?cid=11&scid=9 where some other early receivers are presented. -- Björn > It seems to be an L1/L2 dual frequency surveying receiver. > Searching for "minimac 2816",

Re: [time-nuts] MiniMac 2816AT

2011-03-07 Thread GandalfG8
It seems to be an L1/L2 dual frequency surveying receiver. Searching for "minimac 2816", without the "AT", seemed to produce a few more results with the following from 1988 amongst them _http://cedb.asce.org/cgi/WWWdisplay.cgi?58399_ (http://cedb.asce.org/cgi/WWWdisplay.cgi?58399) ---

[time-nuts] MiniMac 2816AT

2011-03-06 Thread Jim Palfreyman
Hi All, Sorting through my old junk and this beast peaked its head above the pile. I opened it up not even knowing what it was. Seeing "Antenna", "1PPS" and "10 MHz" connectors did get me wondering if it was a GPS unit. It's quite large and heavy. It contains a large (in size!) hard drive and wha