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Does anyone have a feel for the time a package
sent via air mail to the UK from the US takes to get through the two postal / customs systems and be delivered? I have one that was shipped on 03 October and has not been received by my customer. 73! Rose - N7HKW [hidden email] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Should have been here by now Rose, I think 3 weeks is the longest I've waited.
Air mail is usually next day to the destination country, maybe 2 days depending upon timing. Don't know about US side, but probably only a couple of days and then I'd say 5-10 days over here. So on average, 2 weeks. 73 de David, M0XDF -- The secret of life is honesty and fair dealing. If you can fake that, you've got it made. -Groucho Marx On 10 Nov 2012, at 22:32, Rose wrote: > Does anyone have a feel for the time a package > sent via air mail to the UK from the US takes to get > through the two postal / customs systems and be > delivered? > > I have one that was shipped on 03 October and > has not been received by my customer. > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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The CFL's I've analyzed and disassembled have small switching power
supplies, usually running around 40-50 KHz. If you are a VLF/LF listener, you can see the emitted signals up through several hundred KHz. Many sidebands can be observed, at multiples of 60 Hz from the central frequency (which is unstable). Usually, though, not much can be heard about 1 or 2 MHz if your antenna is separated by a few tens of feet from the lamp. If you have a defective CFL, disassembling it can be educational. First, you will see many components stressed at or above their maximum ratings. I've seen some with the filter caps operated with voltage above the maximum rating. Second, it's not uncommon to see the PCB with holes and traces for EMI filtering, but the parts are not installed. I assume that the parts are installed in some prototypes to meet EMI specifications and then are omitted to save money. I don't believe the CE approval markings mean anything to the Chinese manufacturers. I've written a bit about CFLs at http://www.cliftonlaboratories.com/compact_fl.htm Jack K8ZOA ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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Jack,
I believe some (not all!) Chinese companies might think that CE means Chinese Export! 73 Stephen G4SJP On 18 November 2012 20:54, Jack Smith <[hidden email]>wrote: > The CFL's I've analyzed and disassembled have small switching power > supplies, usually running around 40-50 KHz. > > If you are a VLF/LF listener, you can see the emitted signals up through > several hundred KHz. Many sidebands can be observed, at multiples of 60 > Hz from the central frequency (which is unstable). > > Usually, though, not much can be heard about 1 or 2 MHz if your antenna > is separated by a few tens of feet from the lamp. > > If you have a defective CFL, disassembling it can be educational. First, > you will see many components stressed at or above their maximum ratings. > I've seen some with the filter caps operated with voltage above the > maximum rating. > > Second, it's not uncommon to see the PCB with holes and traces for EMI > filtering, but the parts are not installed. I assume that the parts are > installed in some prototypes to meet EMI specifications and then are > omitted to save money. I don't believe the CE approval markings mean > anything to the Chinese manufacturers. > > I've written a bit about CFLs at > http://www.cliftonlaboratories.com/compact_fl.htm > > Jack K8ZOA > > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[hidden email] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
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