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Post by Admin on Apr 11, 2018 4:51:32 GMT
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Post by Boomer on Apr 11, 2018 8:50:42 GMT
That looks good, it could use a schematic for how it's put together and where to place the long section of the antenna wire.
I've used the properties of induction to pick up more signals on AM. Find a wooden utility pole along a road, and many of them have a wire running down the side to a ground stake. Bring your AM radio up to that wire, and signals will improve. I found this out years ago with a pocket radio, walking down the street.
Guard rails can improve signals by bringing the radio up to them, and so can TV antenna ground wires and cable TV lines, and it's great, you don't have to connect anything, just bring the radio close to them and see what you get. Sometimes it's more noise!
That's why the C-Crane antenna can be better, running the antenna away from noisy lines.
Boomer
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Post by Deleted on Apr 11, 2018 12:43:49 GMT
Adding to Home Study on Loops
This link fits right in with my newly opened study of loop antennas which is also being discussed at part15_us.
I'm trying to figure out how a loop antenna is different than a coil in electronic terms, or maybe a loop antenna is a coil. But is a coil a loop antenna?
Loading coils added to short vertical antennas can help it to reach resonance, but it's not called a "loop", even though a loop is not so different...
Obviously there is something to learn about all this.
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Post by mark on Apr 11, 2018 17:22:17 GMT
These work good also and are more portable...https://www.universal-radio.com/catalog/portable/0912io.jpg Another Loop Antenna |
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Post by Deleted on Apr 11, 2018 18:21:00 GMT
Beautiful to the Eye
Very nice, Mark. Buy one for each of us, o.k.?
No, no, I'm being silly. We should buy one for you!
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Post by Admin on Apr 12, 2018 0:05:34 GMT
They discuss running the long wire straight at a 90 degree angle perpendicular to the direction of the station's strongest signal. That looks good, it could use a schematic for how it's put together and where to place the long section of the antenna wire. I've used the properties of induction to pick up more signals on AM. Find a wooden utility pole along a road, and many of them have a wire running down the side to a ground stake. Bring your AM radio up to that wire, and signals will improve. I found this out years ago with a pocket radio, walking down the street. Guard rails can improve signals by bringing the radio up to them, and so can TV antenna ground wires and cable TV lines, and it's great, you don't have to connect anything, just bring the radio close to them and see what you get. Sometimes it's more noise! That's why the C-Crane antenna can be better, running the antenna away from noisy lines. Boomer |
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Post by Boomer on Apr 13, 2018 1:53:12 GMT
That makes sense, since the signal would be hitting all along the broadside of the wire. What I like about a long wire antenna is it gets more signal from outside of the house, that can help overcome appliance noise from indoors.
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Post by Admin on Apr 14, 2018 4:36:16 GMT
When I was a kid I used a 100' long wire antenna for AM BCB DX'ing to an old Cathedral style AM radio. It worked great. That makes sense, since the signal would be hitting all along the broadside of the wire. What I like about a long wire antenna is it gets more signal from outside of the house, that can help overcome appliance noise from indoors. |
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