[time-nuts] 60 KHz Receiver

[Magnus Danielson]

On 10/05/2010 03:17 PM, J. Forster wrote:
>> Hi
>>
>> The bandwidth of anything close to a Loran signal is a *lot* wider than
>> any of the ham bands contemplated below 1 MHz.
>>
>> There's the minor issue of getting the power company to put in a cable to
>> the house for your 1 Mw (capital M not lower case M) transmitter.
>
> I was not contemplating a global navigation system. Just enough to get a
> LORAN type timing, not navigation, lock over a few hundred mile radius.

However, consider that a few of these transmitters if wisely used could 
be kept running by guys like us on electricity bills we could handle and 
provide a grid network. This way the navigation aspect could be embedded 
into the system and propagation delay be cancelled. Fixed location could 
then be used to provide multiple observations of time-indication.

A particular aspect of spread spectrum is that we could have several 
transmitters on the same center frequency which has the benefit that 
equipment delays become common mode to a first degree. This is a benefit 
of GPS over GLONASS.

Multiple carrier systems provide means for frequency diversity as well 
as dispersion observations.

There is many options to consider for such a system.

Cheers,
Magnus