> i thought of tha balcony option. The balcony as an overhang which
> effectively blots out the other half of ths sky not covered by the
> building. I cannot hang any antenna over the railing or on it(in my
> lease and enofrce;I asked), plus there are birds and squirrels which
> would get into
-- Original Message --
>Received: Sat, 15 Dec 2007 05:53:00 PM PST
>From: "Ronald Held" <[EMAIL PROTECTED]>
>To: time-nuts@febo.com
>Subject: Re: [time-nuts] time-nuts Digest, Vol 41, Issue 56
>
>My apartment is in a reinforced concrete building, not near the roof.
>Many years ago I tried
From: Bruce Griffiths <[EMAIL PROTECTED]>
Subject: Re: [time-nuts] re low noise regulators
Date: Mon, 17 Dec 2007 11:19:05 +1300
Message-ID: <[EMAIL PROTECTED]>
> [EMAIL PROTECTED] wrote:
> > Hi Bruce,
> >
> > The capacitors' microphonic sensitivity may actuallyy be more of a factor
> > here.
[EMAIL PROTECTED] wrote:
> Hi Bruce,
>
> The capacitors' microphonic sensitivity may actuallyy be more of a factor
> here.
>
Are electrolytics microphonic?
Ferroelectric (X7R, Z5U,Y5V, X5R, etc but not NP0/C0G) ceramic caps are
microphonic
>
>
>> It still helps to have as low a noise as
[EMAIL PROTECTED] wrote:
> Hi Bruce,
>
> the tempco effect of the series resistor may not be a factor at all for
> typical OCXO's.
>
> If we take a standard 1% resistor such as the Panasonic ERO-S2PHF2R00
> (available on Digikey) with 100ppm/C tempco (that's a fairly bad tempco),
> then w
I think the issue with the series resistor is that the oven current is
temperature dependant, so the drop through the 2 ohm resistor is temperature
dependant too, regardless of the tolerance or stability of the resistor
itself.
As long as the current/temperature curve of the oven is predictable, t
Hi Ronald:
Have a look at the different time transfer methods at:
http://www.prc68.com/I/timefreq.shtml#TT
Since these involve receiving a signal from a transmitter you need to have a
way to know which signals you can get in your building.
For example LORAN-C and WWVB are low frequency signals.
Hi Dave:
The HP 114 is a 1 PPS trigger generator with offset and was made for use with
WWV, see: http://www.prc68.com/I/TF_rack.html
The audio from an HF receiver is fed to the V input on the scope and you can
adjust the sweep speed as fast as propagation will allow. The 114 time offset
moves
In a message dated 12/14/2007 15:00:00 Pacific Standard Time,
[EMAIL PROTECTED] writes:
>> A simple RC filter of say 2 Ohms into 4700uF has a -3dB cut-off at
around
>> 17Hz (4700uF caps are getting quite small these days). That would take
care of
>> most of the 100Hz to 10KHz noise.
>
Sounds like you need to move!
Daun
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Ronald Held
Sent: Sunday, December 16, 2007 1:17 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] time-nuts Digest, Vol 41, Issue 57
i thought of tha balcony option. Th
On Dec 16, 2007 1:16 PM, Ronald Held <[EMAIL PROTECTED]> wrote:
> i thought of tha balcony option. The balcony as an overhang which
> effectively blots out the other half of ths sky not covered by the
> building. I cannot hang any antenna over the railing or on it(in my
The tiny mag mount antennas
- Original Message -
From: "Tim Shoppa" <[EMAIL PROTECTED]>
To:
Sent: Monday, December 17, 2007 8:37 AM
Subject: Re: [time-nuts] Time Transfer
snip--
>> Yes, it's interesting to look at the WWV signal wander on the HP
>> 3586,
>> compared to it's OCXO, and while listening to it o
On Dec 16, 2007 6:09 AM, Ulrich Bangert <[EMAIL PROTECTED]> wrote:
> Gentlemen,
>
> over the last years I have been confronted with numerous nonsense and
> rubbish technical ideas as part of my job. Over the years I came to the
> conclusion that just for the sake of clarity it MUST be allowed to ca
On Sun Dec 16 17:43 , 'Poul-Henning Kamp' sent:
>Find a bird-feed where the top-lid is plastic.
>Mount the GPS-antenna inside the bird-feeder lid.
But take some precautions to prevent those pesky squirrels chewing on the cable!
Peter Vince
___
t
In message <[EMAIL PROTECTED]>, [EMAIL PROTECTED] writes:
>i thought of tha balcony option. The balcony as an overhang which
>effectively blots out the other half of ths sky not covered by the
>building. I cannot hang any antenna over the railing or on it(in my
>lease and enofrce;I asked), plu
"Didier Juges" <[EMAIL PROTECTED]> wrote:
> That's what I meant I suppose. The interesting part is that the timing GPS
> receivers don't continualy try to select the best satellites from all those
> it can see, so other than eliminating outliers, there may still be some that
> are not far out enoug
In message <[EMAIL PROTECTED]
>, Doug Millar writes:
>
>How about calling the unit the "Borat"?
> Doug Millar
That would be a hard unit to use, because you would have to calibrate
out any talent, of which your chosen reference has a non-zero amount.
A much better unit
How about calling the unit the "Borat"?
Doug Millar
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In a message dated 16/12/2007 18:17:18 GMT Standard Time,
[EMAIL PROTECTED] writes:
i thought of tha balcony option. The balcony as an overhang which
effectively blots out the other half of ths sky not covered by the
building. I cannot hang any antenna over the railing or on it(in my
lease
Hi,
My name's Jason, and I must admit to being drawn in by the fascinating
article on Wired. ( if that makes me a dork, so be it!)
As a kid I thought it was neat to try and set my watches and clocks to
WWV from the cheap, crummy 1960's JC-penny all-band receiver , but was
always annoyed that the
i thought of tha balcony option. The balcony as an overhang which
effectively blots out the other half of ths sky not covered by the
building. I cannot hang any antenna over the railing or on it(in my
lease and enofrce;I asked), plus there are birds and squirrels which
would get into it.
Any other
Tim,
> -Original Message-
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of Tim Shoppa
> Sent: Sunday, December 16, 2007 7:29 AM
> To: time-nuts@febo.com
> Subject: Re: [time-nuts] Time Transfer
>
> "Didier Juges" <[EMAIL PROTECTED]> wrote:
> > I would have thought the G
"Didier Juges" <[EMAIL PROTECTED]> wrote:
> I would have thought the GPS receiver averages the readings when it locks on
> multiple satellites. Are you saying it only uses one at a time?
Average is perhaps too simple of a word.
The good GPS receivers (here I'm assuming we aren't talking about Tri
Gentlemen,
over the last years I have been confronted with numerous nonsense and
rubbish technical ideas as part of my job. Over the years I came to the
conclusion that just for the sake of clarity it MUST be allowed to call
them "nonsense" and "rubbish" without applying any political or other
cor
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