Hi Miura, Good to see the radio is finished; congratulations! Some questions:
1. Where is the schematic? If you're not going to share it, do you get the schematic if you buy a kit? 2. Is the $180 price for a kit or is the receiver pre-built? 3. The GPS receiver's disciplined NCO can only go up to 10MHz and is not quadrature. You need to go through 120MHz then divide by four to to receive through 30 MHz. How are you doing this? I see you set the GPS output ot 1.8mHz to receive 3.8MHz via NMEA sentence. 4. Your site mentions the software sets up a bandpass filter. Does this mean there is a switchable RF filter on the front-end? The board doesn't look like it has a filter on it. 5. You say there are digital isolators between the boards. Is this to prevent ground loops? Best 73's, David WB4ONA --- In [email protected], "netnovel2005" <ja7...@...> wrote: > > Hello, all > > My project Soft66GPS will be released soon. using WI125 by Navysync as Lo. > WI125 is GPS module which can output signal stablised by GPS satelite. > > If you are interested in Soft66GPS, please visit my site. > > http://zao.jp/radio/GPS/ > > best 73 > > Miura > JA7TDO >
