[time-nuts] tube GPS receivers

[Magnus Danielson]

Hi Bob,

On 06/23/2013 02:06 AM, Bob Camp wrote:
> Hi
>
> Well if the chip rate is at or above 1 MHz, a wavelength is 300 meters or less. A 1 KM error is probably a bit to large.

A tube-channel to keep tracking within a chip does not seem too hard. 
Utilizing that precision for the rest of the calculation is a challenge.

Each channel would naturally have their own 1.023 MHz crystal 
oscillator, tweaked by the feedback loop control. That part would be 
pretty straight-forward. There also needs to be a carrier oscillator for 
final carrier removal.

Doing this beast in transistors would be enough challenge and a good 
exercise in itself.

Cheers,
Magnus