Re: [time-nuts] Rb danger
From the New Alexandria Library (*): Curie died in 1934 at the sanatorium of Sancellemoz (Haute-Savoie), France, due to aplastic anemia brought on by her years of exposure to radiation. Best regards, --- Antonio A.S. Magalhaes/CT1TE (*) AKA Wikipedia.com Em 2013-07-09 21:11, lstosk...@cox.net escreveu: I just finished Bernard Jaffe's history of chemistry book. The Curies spent years in a small building with tons of ore boiling, mixing, filtering, etc to get a small bit of radium. He died (with some radiation changes) by getting his head run over by a car. She died as an old lady of whatever. At the age I suspect most of us are, I suspect that something else will get us. N0UU ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Thoughts on lightning protection measures....
Fortunately, it seems that lightning is not as frequent in high northern and southern latitudes as is in tropical regions. I was told about a story of a group of Swedish scientists involved in thunderstorm studies, having built a little lab in the village with the best reputation of high probability of lightning, receiving after several years without events a delegation of the residents very grateful because after the lab installation there was no more lightning. Best regards, Antonio CT1TE Em 2012-04-12 17:20, Said Jackson escreveu: One interesting fact: frozen ground is a bad conductor. The ground potential around your house may go up many 1000s of volts even with just a proximity strike, while the power feed stays down, blowing up anything connected to ground. Thus the special Nordig surge protection requirements for TV receivers in northern European countries.. On Apr 12, 2012, at 6:58, Jim Lux jim...@earthlink.net wrote: On 4/12/12 6:22 AM, Michael Baker wrote: Time-nutters-- Around here (N. Central Flori-DUH) it is not uncommon for near-by lightning strikes to damage underground cables and wiring. This is why buried wiring to things like driveway gate-openers are often placed in conduit rather than done with direct-burial wiring so that if lightning damages the wiring a new cable can be pulled through the conduit without having to re-dig the burial trench. Some years ago I had occasion to hold some long discussions with Martin Uman, one of the worlds most distinguished and eminent lightning researchers. He commented that even with the most extraordinary and costly efforts to install protection measures, that-- sooner or later-- there was a good chance that lightning would find a way to damage things. Dr. Uman (and his colleague Dr. Rakov) probably know about lightning and effects than any other humans alive. He's making an excellent point: at some point, the cost to replace the gear (or the cost of being off the air) is smaller than the cost of the protection scheme. Sometimes, you're better off having a sacrificial element, and a spare in the closet for speedy repair. His lightning research laboratory was located here in N.Central Florida because it is in the heart of the most dense strike area in N. America. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] Austron 2000C Loran C Receiver
Now, that the Loran C ressurection seems to be probable, I wonder if it is worthwhile to part a slighthly defective 2000C receiver. If interested contact me off the list. Antonio CT1TE --- ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2000C Loran C Receiver
Paul Co. I am a Loran addict: I have two 2000C (useless in Europe) and another 2100F which is working very fine. Best regards, Antonio --- Antonio Amandio Sanches de Magalhaes Em 2012-03-04 16:18, paul swed escreveu: Antonio you are going to kill off your old 2000? Mine still works. Regards Paul WB8TSL On Sun, Mar 4, 2012 at 11:14 AM, Antonio Amandio Sanches de Magalhaes asma...@fc.up.pt wrote: Now, that the Loran C ressurection seems to be probable, I wonder if it is worthwhile to part a slighthly defective 2000C receiver. If interested contact me off the list. Antonio CT1TE --- __**_ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/** mailman/listinfo/time-nutshttps://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2000C Loran C Receiver
Azelio, I am currently receiving the 6731 Lessay chain. The strongest station is the Xray Soustons, of course. But I can also lock to the Master even at daylight. The phase comparison of my Tbolt against Soustons never shows more than few parts per trillion. It is a pitty that the 7990 Mediterranean chain was dismantled. Ciao, Antonio CT1TE ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2000C Loran C Receiver
John, Following a suggestion of Paul Swed, I did test a similar approach. But the 2000C is a rather complex receiver involving some phase code issues. At the end, if I still remember it correctly, I had a systematic phase jumping between two values and I never could synchronize at any TOC to have my Time Of Day. Best regards, Antonio CT1TE --- Antonio Amandio Sanches de Magalhaes Em 2012-03-04 18:43, J. Forster escreveu: Are they useless because of the 4 digit GRIs? If so, how about introducing a synthesizer into the 10 MHz ref input to jigger the 10.000 MHz to something close such that the receiver will think that 96,460 is actually 96,400 or 96,500. The master oscillator driving the synth will still be 10.00 MHZ and the frequency error will be useful, but very slightly out of cal. -John === ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Austron 2000C Loran C Receiver
Sorry: the 2000C doesn't directly displays TOD. What I wish I had was an UTC seconds tick for epoch time determination. Kind regards, Antonio CT1TE Em 2012-03-04 21:08, J. Forster escreveu: I was not suggesting it for TOD... but as a standard of time interval to steer a local crystal. I've not looked at the 2000C in years, but does it even put out TOD? -John ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
