Re: [time-nuts] Motorola GCPRP12102

2015-02-23 Thread Art Sepin
I was archiving some e-mails and came across this old message from 2012 that may have gone unanswered. The Motorola GCPRP12102 in question is one in a series of Motorola smart antennas. Motorola called it a "Oncore Remote GPS" and details, including a full product description and pin-outs, ar

Re: [time-nuts] OXCO insulation

2015-02-23 Thread Andy Bardagjy
Fiberglass seems like an obvious choice for high temperature insulation. Andy ◉ Bardagjy.com ◉ +1-404-964-1641 > On Feb 23, 2015, at 12:51 AM, Dr. David Kirkby (Kirkby Microwave Ltd) > wrote: > >> On 22 Feb 2015 22:07, "Dave M" wrote: >> >> Yes, I'm aware that the newer OXCOs don't have any

Re: [time-nuts] homebrew counter new board test result

2015-02-23 Thread Magnus Danielson
Dear Li Ang, Nice to have you back reporting on your progress! Now, you have some pretty impressive performance going on there. Looks like a nice little unit too. Is the C-channel the SMA on the back of the PCB? How did you wire up the 74LVC2G14? While it is tempting to use both channels in

[time-nuts] homebrew counter new board test result

2015-02-23 Thread Li Ang
Hi, I'm back. I have been testing my new borad for days. Compared to previous version, this board makes the PCB track of signals far from each other and replaces LDO for TDC with LP5907. CH_A: simple resistor bias and ac couple "front end", CH_B: CH_A+MC100LVELT22 LVPECL , CH_C: CH_A+74L