What you need for a ferrite rod amplifier is a 2 transistor amplifier. If you can't hear the sound of static and hum coming into the sound card, then it won't work. If you use a toilet roll antenna, you need to put iron in it. But having amplification is the main thing when using a small antenna such as that.
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.
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
What you need for a ferrite rod amplifier is a 2 transistor amplifier. If you can't hear the sound of static and hum coming into the sound card, then it won't work. If you use a toilet roll antenna, you need to put iron in it. But having amplification is the main thing when using a small antenna such as that.
Amishman35 1 year ago
lol lots of harmonics of 60hz! shame because it's an interesting band.
Scotscan 3 years ago
you are picking up harmonics of the power transmission. the stronger stuff higher up could be the data rates in the electronic equipment
astralentity 3 years ago
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 3 years ago
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.
Russoft 3 years ago
I heard that. Many times I have put them together with nothing left but a hope :)
XRayCam 3 years ago
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 3 years ago
Need to explain the design of your VLF antenna....before can tell you how to improve.
XRayCam 3 years ago
classic uni student style, 50%theory, 5%practice 45%speculation
floydiangreen 4 years ago
one word "harmonics"
DanaLDouglas 4 years ago
ditto,, harmonics of your mains power supply in the usa
audiofreeq 4 years ago
What's it for?
Kalamolng 4 years ago
Hi Russell. How in the heck did this video get 3 HONORS? It has 2 views and zero comments... Does YT work the honors in reverse now? : - )
LOL.....
edenmaze 4 years ago 2
4 honors now, and It's got under 20 views...what?! NO idea what that's all about.
Russoft 4 years ago
Maybe the video has a "MAGNETIC" Quality?
It ATTRACTS honors as well as polarities...
LOLLLLOLLOOOLOL.....
:D
edenmaze 4 years ago