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Scotscan (August 22, 2008 at 12:48 pm)
lol lots of harmonics of 60hz! shame because it's an interesting band.
astralentity (July 14, 2008 at 1:25 am)
you are picking up harmonics of the power transmission. the stronger stuff higher up could be the data rates in the electronic equipment
XRayCam (May 12, 2008 at 11:32 pm)
I heard that. Many times I have put them together with nothing left but a hope :)
Russoft (May 11, 2008 at 8:06 pm)
Thanks for the advice. I was fully aware that the design was seriously flawed but didn't have the resources at the time to make something better.
XRayCam (May 11, 2008 at 7:06 pm)
Sorry....I guess you did explain your antenna build. I wouldn't expect it to be at end of video (I didn't view the whole video at first). Use an IRON bar in center of "ROLL" *Your feedline is more than likely picking up more signals than your coil (reason is not because of no iron). Your feedline is just a part of the antenna because is not protected from interferance....so you got everything hitting it, including your pc and camera. Needs to be coax.
XRayCam (May 11, 2008 at 6:58 pm)
If you insist on using your VLF receiver (antenna) around your home, or anywere around eletrical interference....you should search online for a LOOP antenna built for VLF freqs..this can TURN away from electrical. Should also use coax as the radio hookup to antenna (should put a braided shield over the coax also-making possible 2 ground connections) BEST to use ANY antenna for VLF....at LEAST 1/2 mile away from ALL powerlines. ALWAYS stay away from manmade interference-is ONLY answer!! Good Luck
XRayCam (May 11, 2008 at 6:43 pm)
Need to explain the design of your VLF antenna....before can tell you how to improve.
floydiangreen (March 15, 2008 at 1:18 pm)
classic uni student style, 50%theory, 5%practice 45%speculation
audiofreeq (February 15, 2008 at 12:56 pm)
ditto,, harmonics of your mains power supply in the usa
DanaLDouglas (October 18, 2007 at 8:48 pm)
one word "harmonics" |