Size of ground plane disk for vertical antennas?
Clash Royale CLAN TAG#URR8PPP
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IâÂÂm looking for information about the diameter of a ground plane disk that I can use with a regular car radio and car type antennas in my home. DIY would be best, or any other ideas for a antenna that will work.
I have tried Google, but have found nothing useful for what IâÂÂm trying to accomplish.
antenna-construction vertical-antenna
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up vote
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IâÂÂm looking for information about the diameter of a ground plane disk that I can use with a regular car radio and car type antennas in my home. DIY would be best, or any other ideas for a antenna that will work.
I have tried Google, but have found nothing useful for what IâÂÂm trying to accomplish.
antenna-construction vertical-antenna
New contributor
1
Hi Greg, and welcome to ham.stackexchange.com! :-) Are you interested in AM or FM radio?
â Mike Watersâ¦
42 mins ago
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up vote
2
down vote
favorite
up vote
2
down vote
favorite
IâÂÂm looking for information about the diameter of a ground plane disk that I can use with a regular car radio and car type antennas in my home. DIY would be best, or any other ideas for a antenna that will work.
I have tried Google, but have found nothing useful for what IâÂÂm trying to accomplish.
antenna-construction vertical-antenna
New contributor
IâÂÂm looking for information about the diameter of a ground plane disk that I can use with a regular car radio and car type antennas in my home. DIY would be best, or any other ideas for a antenna that will work.
I have tried Google, but have found nothing useful for what IâÂÂm trying to accomplish.
antenna-construction vertical-antenna
antenna-construction vertical-antenna
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New contributor
edited 45 mins ago
Mike Watersâ¦
2,6202531
2,6202531
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asked 4 hours ago
Gregory DeHart
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111
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Hi Greg, and welcome to ham.stackexchange.com! :-) Are you interested in AM or FM radio?
â Mike Watersâ¦
42 mins ago
add a comment |Â
1
Hi Greg, and welcome to ham.stackexchange.com! :-) Are you interested in AM or FM radio?
â Mike Watersâ¦
42 mins ago
1
1
Hi Greg, and welcome to ham.stackexchange.com! :-) Are you interested in AM or FM radio?
â Mike Watersâ¦
42 mins ago
Hi Greg, and welcome to ham.stackexchange.com! :-) Are you interested in AM or FM radio?
â Mike Watersâ¦
42 mins ago
add a comment |Â
2 Answers
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Rule of thumb: the ground plane radius should be at least a quarter wavelength.
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If I understand correctly, you have an antenna intended for a car body, but you'd like to use it loose in your house.
A solid ground plane will work, and it should be a quarter wave radius. For FM Radio, wavelength is about 3 m, so the ground plane should be 1.5 metres in diameter.
Instead of a solid ground plane, you could use four radial wires, 0.75 m long, extending at right angles to the whip antenna. They should all be connected to the ground bolt or metal base of the whip. You could use coat hangers or any other stiff wire - diameter and type is not important so select something that is mechanically strong enough. This will be a lot lighter and cheaper than the solid metal ground. It is what's done when mounting a whip on a fibreglass vehicle, or through a tile roof.
add a comment |Â
2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
Rule of thumb: the ground plane radius should be at least a quarter wavelength.
add a comment |Â
up vote
2
down vote
Rule of thumb: the ground plane radius should be at least a quarter wavelength.
add a comment |Â
up vote
2
down vote
up vote
2
down vote
Rule of thumb: the ground plane radius should be at least a quarter wavelength.
Rule of thumb: the ground plane radius should be at least a quarter wavelength.
answered 1 hour ago
Phil Frost - W8II
26k142113
26k142113
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add a comment |Â
up vote
1
down vote
If I understand correctly, you have an antenna intended for a car body, but you'd like to use it loose in your house.
A solid ground plane will work, and it should be a quarter wave radius. For FM Radio, wavelength is about 3 m, so the ground plane should be 1.5 metres in diameter.
Instead of a solid ground plane, you could use four radial wires, 0.75 m long, extending at right angles to the whip antenna. They should all be connected to the ground bolt or metal base of the whip. You could use coat hangers or any other stiff wire - diameter and type is not important so select something that is mechanically strong enough. This will be a lot lighter and cheaper than the solid metal ground. It is what's done when mounting a whip on a fibreglass vehicle, or through a tile roof.
add a comment |Â
up vote
1
down vote
If I understand correctly, you have an antenna intended for a car body, but you'd like to use it loose in your house.
A solid ground plane will work, and it should be a quarter wave radius. For FM Radio, wavelength is about 3 m, so the ground plane should be 1.5 metres in diameter.
Instead of a solid ground plane, you could use four radial wires, 0.75 m long, extending at right angles to the whip antenna. They should all be connected to the ground bolt or metal base of the whip. You could use coat hangers or any other stiff wire - diameter and type is not important so select something that is mechanically strong enough. This will be a lot lighter and cheaper than the solid metal ground. It is what's done when mounting a whip on a fibreglass vehicle, or through a tile roof.
add a comment |Â
up vote
1
down vote
up vote
1
down vote
If I understand correctly, you have an antenna intended for a car body, but you'd like to use it loose in your house.
A solid ground plane will work, and it should be a quarter wave radius. For FM Radio, wavelength is about 3 m, so the ground plane should be 1.5 metres in diameter.
Instead of a solid ground plane, you could use four radial wires, 0.75 m long, extending at right angles to the whip antenna. They should all be connected to the ground bolt or metal base of the whip. You could use coat hangers or any other stiff wire - diameter and type is not important so select something that is mechanically strong enough. This will be a lot lighter and cheaper than the solid metal ground. It is what's done when mounting a whip on a fibreglass vehicle, or through a tile roof.
If I understand correctly, you have an antenna intended for a car body, but you'd like to use it loose in your house.
A solid ground plane will work, and it should be a quarter wave radius. For FM Radio, wavelength is about 3 m, so the ground plane should be 1.5 metres in diameter.
Instead of a solid ground plane, you could use four radial wires, 0.75 m long, extending at right angles to the whip antenna. They should all be connected to the ground bolt or metal base of the whip. You could use coat hangers or any other stiff wire - diameter and type is not important so select something that is mechanically strong enough. This will be a lot lighter and cheaper than the solid metal ground. It is what's done when mounting a whip on a fibreglass vehicle, or through a tile roof.
answered 40 mins ago
tomnexus
2,042413
2,042413
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Gregory DeHart is a new contributor. Be nice, and check out our Code of Conduct.
Gregory DeHart is a new contributor. Be nice, and check out our Code of Conduct.
Gregory DeHart is a new contributor. Be nice, and check out our Code of Conduct.
Gregory DeHart is a new contributor. Be nice, and check out our Code of Conduct.
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1
Hi Greg, and welcome to ham.stackexchange.com! :-) Are you interested in AM or FM radio?
â Mike Watersâ¦
42 mins ago