[time-nuts] Re: Time Signal Transmitter (low power)

[Bob kb8tq]

Hi

The original idea was a transmitter with a 20m range. The “check
the regs” are aimed at that sort of setup.

For something that is in contact with the clock or watch, indeed very
low power could be used. Normal coil based radiators would make
sense. It’s not clear just how practical wiring all that up with devices
scattered over an area with a diameter of 40 meters.

Bob

> On Jan 25, 2022, at 1:19 PM, Adrian Godwin <artgodwin at gmail.com> wrote:
> 
> Would a loop surrounding the watch (like an induction loop system for
> hearing aids) help keep the radiation lower ?
> 
> On Tue, Jan 25, 2022 at 6:14 PM Bob kb8tq <kb8tq at n1k.org> wrote:
> 
>> Hi
>> 
>> It’s not clear that the regs in Australia would care about
>> doing this in an area not covered by this or that time signal.
>> I don’t know *what* they do or don’t say. My only concern
>> is that we all stay out of jail :)
>> 
>> Bob
>> 
>>> On Jan 25, 2022, at 12:21 PM, Lux, Jim <jim at luxfamily.com> wrote:
>>> 
>>> On 1/25/22 7:52 AM, Bob kb8tq wrote:
>>>> Hi
>>>> 
>>>> I would check the local rules and regs before you put money
>>>> into one of these gizmos. At least by the rules over here, this
>>>> sort of thing might get you in trouble.
>>> 
>>> Setting a watch 30 cm away would require *very* low power
>>> 
>>> At 20m, you'd probably be risking setting your neighbors' clocks (unless
>> you live in the middle of a huge tract of deserted land, of which there are
>> many in Australia)
>>> 
>>> 
>>>> 
>>>> Bob
>>>> 
>>>>> On Jan 25, 2022, at 5:29 AM, Anthony Dunne <agdunne at hotmail.com>
>> wrote:
>>>>> 
>>>>> G'day time nut friends
>>>>> 
>>>>> I wonder if one of you could point me in the right direction on how to
>> purchase (if one exists) a Time Signal Transmitter for use at the local
>> level (range 20m) for synchronising watches and radio clocks using the
>> various standard radio frequencies?
>>>>> 
>>>>> And for the transmitter itself to receive / synchronise it's time
>> using NTP?
>>>>> 
>>>>> I am in Australia and we are out of range for the normal
>> transmissions...
>>>>> 
>>>>> 
>>>>> Kind regards to you all
>>>>> 
>>>>> 
>>>>> Anthony Dunne
>>>>> 
>>>>> Sydney, Australia
>>>>> 
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