[time-nuts] Steve's new QTH...

Steve Rooke sar10538 at gmail.com
Wed Sep 8 21:27:03 UTC 2010


On 9 September 2010 00:51, Rob Kimberley <rk at timing-consultants.com> wrote:
> Got this post 5 times - you still getting aftershocks??

That must be level 5 on the posting scale:)

Don't know why you got 5 copies of it as I had no problem sending it
but my apologies to all if you've received multiple copies of this.

And yes, we are still receiving after-shocks but they seem to have
quietened down in the last 24 hours.

Steve

> :-)
>
> Rob K
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Steve Rooke
> Sent: 07 September 2010 11:06 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Steve's new QTH...
>
> Burt,
>
> On 8 September 2010 01:45, Burt I. Weiner <biwa at att.net> wrote:
>> Steve,
>>
>> Depending on the type of antenna used for your GPS, you might want to
>> check the Zenith or vertical angle, and if possible, compare that to
>> pre-quake positioning.  Your antenna may now be seeing a change in
>> multipath from some nearby environmental change (no pun intended under
>> the circumstances) that could cause a difference in reflected signals
> arriving at the antenna.
>
> With that in mind I've just changed the default 10 deg elevation mask angle
> to 30 deg and will see what effects that has. Looking closely at the antenna
> mounting I cannot see any change in it's angle or position but there may
> have been some movement of this area as we are on an artificial bank
> abutting the wetland wildfowl park. What I really need is a real GPS survey
> system to determine my correct location.
>
>> Many years ago I ran into a combined group on Mt. Wilson, our local
>> broadcast farm in the mountains, from Cal Tech and MIT that was
>> measuring the movement between Southern California mountains using
>> lazers.  While this was scientifically fascinating, it gave me the
> willies.
>
> Yes, it really brings it home that we live on just the skin of a rice
> pudding. This sort of thing must be a nightmare for the ground stations in
> control of the GPS system. What happens if the 0 deg meridian (used to be
> the Greenwich meridian) physically moves, do they account for this I wonder.
> Considering that the American continent and Europe/Africa are constantly
> moving apart, and Asia and the Americas are moving closer, this must mean
> that the position of basically most places on the Earth are constantly
> changing anyway. Makes you feel like saying, where am I today.
>
> 73,
> Steve ZL3TUV
>
>> Burt, K6OQK
>>
>>
>>> Date: Tue, 7 Sep 2010 18:08:31 +1200
>>> From: Steve Rooke <sar10538 at gmail.com>
>>> Subject: Re: [time-nuts] Freestanding mast
>>>
>>>
>>> Well, Steve has been experiencing a LOT of after-shocks, some of
>>> which are still big enough to move things around and I found I had to
>>> grab hold of my cup of tea to stop it shaking onto the floor last
>>> night. In fact these after-shocks are still opening up new cracks in
>>> roads and causing buildings to fall.
>>>
>>> As for my height position, I have run a few surveys but I'm getting
>>> varying readings and I wonder if the after-shocks are messing up the
>>> survey results. The latest one which was during a fairly stable
>>> period was 6.8 MSL.
>>>
>>> The mast could have sunk a bit or even this whole area could have
>>> done as I live on reclaimed marsh-land. My Mothers 3 year old house
>>> looks like it has sunk a bit at one and and risen at the other, ie.
>>> it looks like it has tipped slightly as her house is built on a
>>> concrete pontoon.
>>>
>>> It wouldn't surprise me if they adjust the height of MSL but I would
>>> have thought they would have moved it the other way in an attempt to
>>> forestall fears of the effects of Global Warming.
>>>
>>> Regards from Quake City,
>>> Steve
>>
>> Burt I. Weiner Associates
>> Broadcast Technical Services
>> Glendale, California  U.S.A.
>> biwa at att.net
>> www.biwa.cc
>> K6OQK
>>
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>
>
>
> --
> Steve Rooke - ZL3TUV & G8KVD
> The only reason for time is so that everything doesn't happen at once.
> - Einstein
>
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-- 
Steve Rooke - ZL3TUV & G8KVD
The only reason for time is so that everything doesn't happen at once.
- Einstein



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