John walker
New Member
HI-I hope someone can advise me on the next step in my project ,
presently i have built a MSF time clock rx using a zn414 chip.The idea being to inject the time signals into the soundcard on the laptop where a
software program( fdk clock) then updates the pc laptops time.
(1sec or so being accurate enough to visual track cosmos/sats pass over my location using a program called "orbit".)
Incidently i live 3k from the Rugby time clock GBR so sigs are very strong .
The Problum is how to convert the am carrier sig into a tone to drive soundcard -should i use a pll such a ne567 as a tone decoder or a 60khz bfo oscillator to beat with the signal ....
What do you think and what would the external part values be ?as the ne567 data sheets do not make that very clear.
presently i have built a MSF time clock rx using a zn414 chip.The idea being to inject the time signals into the soundcard on the laptop where a
software program( fdk clock) then updates the pc laptops time.
(1sec or so being accurate enough to visual track cosmos/sats pass over my location using a program called "orbit".)
Incidently i live 3k from the Rugby time clock GBR so sigs are very strong .
The Problum is how to convert the am carrier sig into a tone to drive soundcard -should i use a pll such a ne567 as a tone decoder or a 60khz bfo oscillator to beat with the signal ....
What do you think and what would the external part values be ?as the ne567 data sheets do not make that very clear.