I should drop an email rather than just lurking on this extremely interesting list. I'm in the process of building my first GPSDO, so I have lots to learn and am enjoying the education. This list has been a real eye opener for me. I'm a licensed amateur radio operator looking to move up into the microwave bands, and I spend a lot of time repairing old radio kit for reuse by other operators. As such an accurate time reference is important, hence this project. So far I've based everything on a number of published sites and designs to learn the basics before launching into something more adventurous and am building a simple PLL locked OCXO using a Navman Jupiter Tu60 GPS and an IsoTemp OCXO. Together these will exceed the limitations of my equipment in measurement, so I'll probably have to build a second one for comparison on the DSO or look into other measurement methods to validate the results. Lots to learn... -- -- Teach your kids Science, or somebody else will :/ jason@ball.net vk2vjb@google.com callsign: vk2vjb

Jason Welcome to the list. I had the pleasure of observing my first 10 GHz QSO a few weeks ago, and was surprised at how difficult it was to find the other guy ... he was 20 kHz lower than we expected. Accurate LO's on both sides would have been a big help. GL de KM1P Joe On 9/15/2014 7:53 PM, Jason Ball wrote: > I should drop an email rather than just lurking on this extremely > interesting list. > > I'm in the process of building my first GPSDO, so I have lots to learn > and am enjoying the education. This list has been a real eye opener > for me. > > I'm a licensed amateur radio operator looking to move up into the > microwave bands, and I spend a lot of time repairing old radio kit for > reuse by other operators. As such an accurate time reference is > important, hence this project. > > So far I've based everything on a number of published sites and > designs to learn the basics before launching into something more > adventurous and am building a simple PLL locked OCXO using a Navman > Jupiter Tu60 GPS and an IsoTemp OCXO. Together these will exceed the > limitations of my equipment in measurement, so I'll probably have to > build a second one for comparison on the DSO or look into other > measurement methods to validate the results. > > Lots to learn... > > >