Re: [HamSCI] Abridged summary of hamsci@googlegroups.com - 6 updates in 4 topics

[Howard]

Can anyone please tell me if the CHU transmitter frequency is phase locked to its atomic clock ? 

Howard
VE2AED

On Thu, May 21, 2026 at 20:58 <ham...@googlegroups.com> wrote:

ham...@googlegroups.com

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• CHU end of life. - 1 Update
• CHU to shut down - 2 Updates
• Connection attempts to invalid domain - 1 Update
• HamSCIence Zoom: Space Weather, GPS & More: Thurs Feb 12th at 2100UTC - 2 Updates

CHU end of life.

Michael Hauan <michael...@gmail.com>: May 21 07:57PM -0500 https://nrc.canada.ca/en/certifications-evaluations-standards/canadas-official-time/nrc-shortwave-station-broadcasts-chu ...more

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CHU to shut down

Nicholas Hall-Patch <n...@ieee.org>: May 22 12:33AM via Canadian International DX Club:     As of June 22, 2026, the shortwave radio broadcast of the NRC's official time signal will no longer be available. ...more

<pop...@gmail.com>: May 21 08:47PM -0400 This is sad news.   CHU has been on the air approx.. 100 years     Greg VA3CBN           From: 'Nicholas Hall-Patch' via HamSCI <ham...@googlegroups.com> Sent: May 21, 2026 8:33 PM ...more

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Connection attempts to invalid domain

WILLIAM n SUSIE ENGELKE <enge...@bellsouth.net>: May 21 07:13PM We have seen a large number of attempts to connect to pswsnet.eng.ua.edu . This is not valid (the website URL is pswsnetwork.eng.ua.edu).  Please correct your code or config file if you are doing ...more

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HamSCIence Zoom: Space Weather, GPS & More: Thurs Feb 12th at 2100UTC

Gary Mikitin, AF8A <gmikit...@gmail.com>: May 21 06:25AM -0700 In the 'better late than never' category, here is a link to the YouTube recording <https://www.youtube.com/watch?v=x8x0VYTQtOk> of Dr. Griffin's presentation.   If/when you get the same question ...more

Gamal Zayed <gamal...@aucegypt.edu>: May 21 05:34PM +0300 Thanks, Gary!   73 de Gamal   On Thu, May 21, 2026 at 4:25 PM Gary Mikitin, AF8A <gmikit...@gmail.com> wrote:   > ...more

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[googl...@cox.net]

Howard,

 

CHU uses an on-site cesium atomic clocks.

https://nrc.canada.ca/en/certifications-evaluations-standards/canadas-official-time/nrc-shortwave-station-broadcasts-chu

 

“The frequencies are derived from one of a trio of atomic clocks located at the transmitter site.”

 

73,

 

Mark Braunstein  WA4KFZ

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