wrote in message
ups.com...
Do you think people would like to have a DDS VFO whose frequency and
phase were both direcly related to a common time/frequency standard
like WWV? That is, two people anywhere in the world using the VFO
could make a signal having exactly the same phase as measured at the
transmitter. I would adjust for lightspeed lag using a GPS receiver.

If you already have a GPS receiver, you can lock to their time code -- this is
already commonly done in, e.g., cell phone base stations to keep everyone in
sync as you move between cell sites. It's also a popular way to get a cheap,
high precision 10MHz reference clock for spectrum analyzers and other lab
gear -- TAPR has an inexpensive board that does this.

---Joel Kolstad