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David Ashton
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re: My Geiger counter now counts (hurray)!
David Ashton   6/5/2011 11:31:29 PM
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Right...so you're a bit disDACted right now. No worries, I am sure you're going to be doing lots of stuff with it when you're back! PS if you can teach yourself something new while you are there you can call yourself an autodiDACt..... (sorry...)

Max The Magnificent
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re: My Geiger counter now counts (hurray)!
Max The Magnificent   6/5/2011 9:28:16 PM
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Hi David -- I just arrived in San Diego for DAC 2011 -- I'm here all week starting now (Sun 5 June) -- I'll have to answer this when I get back to my office so I can read the package to see what it emits -- Max

David Ashton
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re: My Geiger counter now counts (hurray)!
David Ashton   6/5/2011 9:10:28 AM
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One query Max...re your 5 uSv source. As Sieverts are a measure of how radiation affects the human body (ie received dose) do you know how this relates to the Bequerels that the source I got access to was quoted in (8 MegaBequerels)? Be interesting to see how they compare. Also mine was mostly Gamma, they said, do you knwo what yours emits?

David Ashton
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re: My Geiger counter now counts (hurray)!
David Ashton   6/5/2011 12:17:08 AM
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Always a pleasure Max. Good thing it worked when you got it. Otherwise I would have had to commit suicide to save face I think.....

Max The Magnificent
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re: My Geiger counter now counts (hurray)!
Max The Magnificent   6/3/2011 6:53:51 PM
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HURRAY!!! My (now-working) Geiger counter has just arrived back from David. It’s on my desk clicking away randomly – my (mildly) uranium-enriched glass marbles do seem to increase the count a bit – but I need to time things like David did to get a good feel for it. I did just borrow a 5 uSv radioactive sample from the folks in the next bay and the little scamp started clicking and flashing furiously. I also want to try it with that "No-Salt Salt" David used. I’m heading out to DAC this weekend – so I’ll take the video and write the follow-up blog when I get back. THANK YOU DAVID!!!

Max The Magnificent
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re: My Geiger counter now counts (hurray)!
Max The Magnificent   5/25/2011 4:05:30 PM
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Too Late...

old account Frank Eory
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re: My Geiger counter now counts (hurray)!
old account Frank Eory   5/24/2011 9:41:16 PM
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Nice work David! Great video too.

David Ashton
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re: My Geiger counter now counts (hurray)!
David Ashton   5/24/2011 8:36:03 PM
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I was a bit worried after getting so close to that gamma ray source in the movie...but the techie said not to worry with such a short exposure. Hope he is right. I'm not glowing in the dark yet, anwyay.

Duane Benson
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re: My Geiger counter now counts (hurray)!
Duane Benson   5/24/2011 8:29:20 PM
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Now, just don't go out and mess up your DNA in your enthusiasm for finding new and stronger radiation sources.

Max The Magnificent
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re: My Geiger counter now counts (hurray)!
Max The Magnificent   5/24/2011 8:12:37 PM
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@David: "I'm a BIG scamp!" That's funny -- it's not the word your wife used when she was describing you to me :-)

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As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.

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