I just wanted to publically say thanks to Didier for hosting all of
those manuals. I just found yet another manual that I needed.
Joe Gray
KA5ZEC
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Down East Microwave Inc now has a four channel 10 MHz distribution
amplifier with some gain and LP filters on each output.
Their price with the PC board and all components, but without
connectors and enclosure is about $25
Chuck, W7CS
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Hi Chuck,
Great to see you here. I just joined this GREAT group a few days ago,
You may not remember me. I'm Dave W6TE ex WA6YDI. You were one of my first
contacts on 2M EME back in the early 80's. You were up in the Bay area and I
was in Fresno. I'll never forget the contact because (you were
An amazing resource
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Joseph Gray
Sent: Friday, November 13, 2009 2:01 AM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Didier Juges
I just
Thanks to everybody's help, it just keeps growing and growing :)
18,903 files as of today.
Didier KO4BB
-Original Message-
From: time-nuts-boun...@febo.com
[mailto:time-nuts-boun...@febo.com] On Behalf Of J. L. Trantham
Sent: Friday, November 13, 2009 6:30 AM
To: 'Discussion of
The website is an amazing resource, too! ;)
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Didier Juges
Sent: Friday, November 13, 2009 7:09 AM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts]
You will need a receiver to compare your references to. It appears that
LORAN will be shut off, so that leaves two services available, either
WWV 60 Khz or GPS. I do not use WWV any more, I can tell you about GPS.
To compare against GPS you will need a timing receiver, there are
several
WWVB not WWV.
IMO, WWVB is MUCH fussier than LORAN. It's just utter stupidity that LORAN
is being shut down.
-John
You will need a receiver to compare your references to. It appears that
LORAN will be shut off, so that leaves two services available, either
WWV 60 Khz or GPS.
I use GPS and LORAN. Always nice to have a backup
With LORAN being shut down, have resurrected the ole wwvb rcvr and built an
amplified loop ant.
Can work but it takes about 3-5 hours to get to 1X10^11 accuracy. Still
observing various strange ness shuch as diurnal shift ...
Odd wwvb works at
Joe boy do I agree with your comments on Didiers site.
Been very very helpful.
Thank you Didier and everyone who has contributed.
On Fri, Nov 13, 2009 at 3:00 AM, Joseph Gray jg...@zianet.com wrote:
I just wanted to publically say thanks to Didier for hosting all of
those manuals. I just found
The ground wave path of WWVB varies due to a very small changes in the
index of refraction (temperature and absolute humidity) over the path. It
is not much, but is measurable.
Don
paul swed
I use GPS and LORAN. Always nice to have a backup
With LORAN being shut down, have resurrected the ole
The ground wave path of WWVB varies due to a very small changes in the
index of refraction (temperature and absolute humidity) over the path.
It is not much, but is measurable.
How much is not much? Say over a 1000 km path. Are we talking
microseconds or picoseconds?
--
These are my
On 11/13/2009 07:15 PM, Don Latham wrote:
The ground wave path of WWVB varies due to a very small changes in the
index of refraction (temperature and absolute humidity) over the path. It
is not much, but is measurable.
Don
My own nuttiness started with that, and the innocent question How
It's been a while since I was using an HP 117A, but from memory the
diurnal shift in Boston was a good part of a 1 cycle of 60 KHz or roughly
16 uS. To get good data, I'd have to run the stripchart for 24 hours (to
make sure track was not lost) and compsare readings at the same time each
day.
Hi All: I've copied my paper Diurnal frequency variation and refractive
index from Nature Physical Sciences, Vol. 234, 51, pp. 157-158, Dec. 20,
1971. There are two TIFF files (I tried like heck to get them in one file,
and failed miserably, cannot understand my image software worth a #$%^.
Don, you are welcome to upload your pictures (and paper) to my web site, where
people normally upload manuals.
Didier KO4BB
http://www.ko4bb.com/cgi-bin/manuals.pl
Sent from my BlackBerry Wireless thingy while I do
other things...
-Original Message-
From:
On Fri, Nov 13, 2009 at 09:51:11AM -0800, J. Forster wrote:
WWVB not WWV.
IMO, WWVB is MUCH fussier than LORAN. It's just utter stupidity that LORAN
is being shut down.
I have emailed my brother in law who is a rear admiral (I think
now called a vice admiral) and currently CFO of the
The Coast Guard has always been stretched very thin with limited resources
for many missions. The saying was, every year we do more and more with less
and less.
I served in the late 70s as an electronics technician, EE, and later after Navy
flight school, flying air rescue into the 80s.
I
I asked a close friend and fellow engineering alum who was deeply involved
in GPS and he thinks closing down LORAN is utterly idiotic.
IMO, there is something purely political, rather than technical, about
this decision.
Perhaps the GPS stakeholders don't want to admit just how vulnerable GPS
is
I recently acquired an HP 5315A Universal Counter and no longer have a
need for it. As best as I can tell, it works fine. It has a
calibration sticker on it dated Feb 2008. I haven't opened it or
messed with it at all. Make me an offer off-list, via email. I'll let
it go cheap.
Joe Gray
KA5ZEC
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