Bruce, Im going by my friends calibration lab tomorrow afternoon. Hes got a known working trimble gps setup that he uses for 10mhz. I will definitly let you all know what I find. Thanks --Don
On 1/12/08 8:10 PM, "Bruce Lane" <[EMAIL PROTECTED]> wrote: > Hi, Don, > > *********** REPLY SEPARATOR *********** > > On 12-Jan-08 at 19:09 Don Wisdom wrote: > >> Bruce, >> The Andrew antenna uses a +5v DC Bias The trutime is kicking out +5vDC >> between the center conductor & the cable shield. It has the best horizon >> to >> horizon view its going to get where I live (mobile home park) It is >> mounted outside on its bracket with the dome above the metal roof. Any >> other suggstions? I checked the internal battery voltage as well its >> normal. > > It is possible that the GPS receiver module itself may have problems. I found > that, in the case of a (very!) old receiver module in one of my own clocks (a > Magellan OEM5000), cold solder joints can be a problem on some receivers of > the late-90's era. > > I started with much the same symptoms. What I tried was using an Ungar 6966C > heat gun as a makeshift "reflow" tool to carefully reheat and reflow the > solder on the surface-mount components (notably the IC's and chip > caps/resistors near the antenna port). > > The result was amazing. The receiver went from completely deaf to completely > normal, and it's been fine ever since. I was particularly pleased about this > one because the clock it's in (an Odetics 425) had the Amundsen Antarctic > Research Station as its former home, more specifically as part of the AST/RO > (Astronomical Sub-Millimeter Telescope/Remote Observatory) project. > > Anyway -- If you have a similar heat gun (and if you don't, you should get one > -- they're really handy!) just stick the narrow-tube nozzle on it and try > going over the GPS receiver board. You have very little to lose. > > Happy tweaking. > > > -=-=-=-=-=-=-=-=-=-=-=- > Bruce Lane, Owner & Head Hardware Heavy, > Blue Feather Technologies -- http://www.bluefeathertech.com > kyrrin (at) bluefeathertech do/t c=o=m > "If Salvador Dali had owned a computer, would it have been equipped with > surreal ports?" > > > _______________________________________________ > 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.