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Victor Lick wrote:
Thanks for the numbers, Gregg. I managed to find the program as a ZIP file all over the Internet but everyone I downloaded wouldn't install. The antenna you calculated is big, way too big to go in the attic. It was a cool idea though. Imagine giving people of a tour of my house. "...And up here we have the WWVB reradiating magnetic loop antenna with a resonant frequency of 60 KHz and a bandwidth of 56.2 Hz." I can hear them now, "Geez, Vic, you are a major geek." Anyway, a 2M wide antenna is a bit big so I need to find another way. Active antennas won't do either. One clock sits on my desk in my office and the other one hangs on the wall. Antennas on those will have a very low wife acceptance factor. Can I build a repeater? The receiving antenna in these clocks is small. Maybe a small low power transimitter with the same size antenna? Can I buy a repeater? Can I buy a transmitter? Thanks for all your help on this, Vic For a wall clock, I would try adding a field concentrator antenna all around the back edge of the clock, to put most of the field that passes through that area, mostly through the clock's antenna. For a small table clock, this approach is not so tenable, unless you can paste it on the under side of the table, and produce the concentration where you normally sit the clock. -- John Popelish |
#2
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Behold, John Popelish scribed on tube chassis:
Victor Lick wrote: Thanks for the numbers, Gregg. I managed to find the program as a ZIP file all over the Internet but everyone I downloaded wouldn't install. The antenna you calculated is big, way too big to go in the attic. It was a cool idea though. Imagine giving people of a tour of my house. "...And up here we have the WWVB reradiating magnetic loop antenna with a resonant frequency of 60 KHz and a bandwidth of 56.2 Hz." I can hear them now, "Geez, Vic, you are a major geek." Anyway, a 2M wide antenna is a bit big so I need to find another way. Active antennas won't do either. One clock sits on my desk in my office and the other one hangs on the wall. Antennas on those will have a very low wife acceptance factor. Can I build a repeater? The receiving antenna in these clocks is small. Maybe a small low power transimitter with the same size antenna? Can I buy a repeater? Can I buy a transmitter? Thanks for all your help on this, Vic For a wall clock, I would try adding a field concentrator antenna all around the back edge of the clock, to put most of the field that passes through that area, mostly through the clock's antenna. Oh, yes! This reminds me of an old PopComm article, where someone re-wound a ferrite loop antenna and tuned it as a concentrator. They are only 6" long! -- Gregg "t3h g33k" http://geek.scorpiorising.ca *Ratings are for transistors, tubes have guidelines* |
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