Hi Guys, Found a little info......
The main board/receiver used in this unit is also used in the Trimble Placer 100 and RefTek 73A. Hopefully, these two leads may develop into some useful info. Thanks, Scott AA5AM On Tue, May 23, 2017 at 6:59 AM, Bob kb8tq <[email protected]> wrote: > Hi > > Yet again another quick read mistake :) > > Bobb > > > On May 23, 2017, at 7:35 AM, Tim Shoppa <[email protected]> wrote: > > > > Bob, that was 16.368MHz, an extremely common crystal to find in the first > > couple generations of GPS receivers. 16.368 MHz is 16 times the 1.023 MHz > > C/A GPS signal chipping rate; multiplied by 96.25 to get the 1575.42 MHz > L1 > > frequency and multiplied by 75 to get the 1227.60 MHz L2 frequency. > > > > Tim N3QE > > > > On Tue, May 23, 2017 at 7:24 AM, Bob kb8tq <[email protected]> wrote: > > > >> Hi > >> > >> If you guess that the design started in 90 and ran through 93~94 that > >> is a very early unit for Trimble. 16.384 MHz suggests some sort of > telecom > >> or data bus application. > >> > >> Bob > >> > >>> On May 22, 2017, at 11:48 AM, Scott Armstrong <[email protected]> wrote: > >>> > >>> Hi Guys, > >>> > >>> I popped open the case. Not too crowded in side. The case is an > extruded > >>> aluminum case that has the back endplate welded on. > >>> > >>> There are 4 board assemblies in the case. > >>> > >>> *Interface board that connects the 22 pin connector to the other two > >> boards. > >>> * Power supply board. (12016-00). Main component looks to be a DC-DC > >>> converter made by Computer Products. > >>> * Main board (14636-) This board has a 16.368 MHz osc made by NDK. > >>> * A daughter board (14789E) which is the receiver and is attached to > the > >>> main board. > >>> > >>> Date codes I see are 89, 91, 92 and 93 so unit was probably assembled > in > >>> '93. > >>> > >>> Maybe some of the assembly numbers will be recognizable if they are > used > >> in > >>> other units. > >>> > >>> Thanks, > >>> Scott AA5AM > >>> > >>> > >>> On Sat, May 20, 2017 at 12:33 AM, Bill Hawkins <[email protected]> > >> wrote: > >>> > >>>> FWIW, that looks like aviation equipment (gov't or civil), with a > >>>> locking connector. > >>>> > >>>> That stuff is designed for minimum size and weight. You might find the > >>>> inside of the box quite cramped. > >>>> > >>>> Buying aviation parts is even more expensive than buying boat parts. > >>>> > >>>> Bill Hawkins > >>>> > >>>> > >>>> -----Original Message----- > >>>> From: time-nuts on behalf Of Bob Bownes > >>>> Sent: Friday, May 19, 2017 10:48 PM > >>>> > >>>> Pretty sure that connector is an off the shelf Amphenol part. If you > >>>> can't find it, however, you can replace it with an off the shelf one > >>>> that will fit in the same hole. (If your lucky, you can even re-use > the > >>>> pins.) > >>>> > >>>> The replacement will run you about $30-40 for the pair, chassis and > >>>> plug. Check Mouser, etc. > >>>> > >>>>> On May 19, 2017, at 23:21, Bob kb8tq <[email protected]> wrote: > >>>>> > >>>>> The mating side of that 22 pin connector isn't going to be cheap. It > >>>>> looks like something out of their government systems group back in > the > >>>> late 90's. If it is, you may have a hard time getting info on it. > >>>>> I'd pop it open and see what's inside. At least that will give you an > >>>>> idea if it's 20 years old or 5 years old. Knowing the era should help > >>>> in the search for information. > >>>>> > >>>>> Bob > >>>>> > >>>>>> On May 19, 2017, at 10:21 PM, Scott Armstrong <[email protected]> > wrote: > >>>>>> > >>>>>> I acquired a Trimble 16634-10 receiver. A search of the web has > >>>>>> turned up nothing so far. > >>>>>> The unit is in a steel box built like a tank. SMA connector for > >>>>>> antenna input and a 22 pin circular connector for the I/O and power > >>>>>> > >>>> > >>>> _______________________________________________ > >>>> time-nuts mailing list -- [email protected] > >>>> To unsubscribe, go to https://www.febo.com/cgi-bin/ > >>>> mailman/listinfo/time-nuts > >>>> and follow the instructions there. > >>>> > >>> _______________________________________________ > >>> time-nuts mailing list -- [email protected] > >>> To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> mailman/listinfo/time-nuts > >>> and follow the instructions there. > >> > >> _______________________________________________ > >> time-nuts mailing list -- [email protected] > >> To unsubscribe, go to https://www.febo.com/cgi-bin/ > >> mailman/listinfo/time-nuts > >> and follow the instructions there. > >> > > _______________________________________________ > > time-nuts mailing list -- [email protected] > > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
