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An amateur radio operator erects a 75 foot vertical tower for his antenna find the angle of elevation to the top of the tower at a point on level ground 50 feet from the base?
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∙ 14y ago
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Brooks Bird
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∙ 14y agohehe erects
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Does a handheld CB radio need an antenna?
Not necessarily, but the antenna does need to be grounded.
Why vertical polarized wave is preferred over horizontal polarized wave in mobile radio communication?
1). Reflection of vertically polarized waves is less efficient, so vertical polarization is less susceptible to multipath fading due to ground-based reflection. 2). In order to avoid directional effects due to the radiation pattern of the receiving antenna (losing the mobile signal when the car turns a corner), the antenna wants to be vertical. That generally means vertical electrical polarization.
Why are car radio antenna's vertical?
It's called polarization and it relates to the orientation of the transmitting antenna. If the transmitting antenna is vertical, the majority of the transmitted energy is vertically polarized so it stands to reason that to pick up the most signal the receiving antenna should be the same way. In a moving auto though more is now understood about the propagation path the signal takes before it actually gets to the moving radio. The signal isn't line of sight but takes a lot of reflective paths before it actually gets to the antenna. The signals are reflected so many times that polarization is altered and can be any direction by the time it gets to the car receiver. Radio stations get around this anomaly by circularly polarizing the signal at the transmitting antenna. Many car antennas are now embedded in the glass windows instead of wire whips formally mounted to the fenders.
Can the antenna on a 2000 Jeep Grand Cherokee Laredo go down?
Chances are that, unless you have a high end stereo system in your Jeep with electric antenna, you probably have a fixed post antenna that will not retract. This can be replaced with an aftermarket antenna that can go down but my experience is that the sheet metal that the antenna is mounted to is at such a severe angle that every aftermarket mounting kit that I found will not allow the antenna to stand properly vertical. You might try the dealer if its important enough. I believe they got away from the older style retractable antennas because they just don't last.....especially if you go down a trail that has branches that will catch the mast.
Does operating a ham radio interfere with television broadcast?
That's like asking "Does driving a car produce accidents ?", or "Does lighting a cigarcause houses to burn down ?"The answer is: It can, if the amateur transmitter and antenna aren't properly designed,or if the TV set is improperly adjusted or cheaply manufactured. But it doesn't happenautomatically all the time. And one of the subjects that a ham operator is tested onwhen he applies for his government license is: how to avoid TV interference, and howto cure it if it happens.
What is the dofference between azimuth and elevation?
Elevation is a vertical lift and azimuth is a rotation around a vertical axis. An example of its use is in radar. The radar antenna rotates towards its target, its azimuth, and then lifts vertically to elevate the receiver then locks on to the target.
What has the author Paul H Lee written?
Paul H. Lee has written: 'The amateur radio vertical antenna handbook' -- subject(s): Amateurs' manuals, Antennas, Radio
What is the elevation of the Palos Verdes radar antenna?
1480'
Why antenna of walky talky vertical in position?
The antenna of walky talkies are vertical when in position, so to better pick up radio waves more accurately.
What equipment is hooked up between an amplifier and a Amateur radio transceiver?
The flow chart follows this pattern; Transceiver to amplifier then out to swr meter, then into antenna tuner then out to antenna.
Antenna on a A160 Mercedes?
i believe that the antenna for these cars are on the rear window - the two vertical lines that are near the window brake light.
Does a handheld CB radio need an antenna?
Not necessarily, but the antenna does need to be grounded.
Where use antena coupler in aircraft?
An antenna coupler is usually placed at the base of the vertical stabilizer to connect the antenna at the leading edge of the stabilizer to the rest of the system.
Jack has a 75 foot vertical TV antenna on his roof He wants to connect a guy wire from the top of the antenna to a hook on the roof The hook is located 15 feet from the base of the antenna How many?
76.5 feet.
What kind of Antennas do Amateur Radio use high or low or microwave?
All three, and many others besides. It depends on the frequency band being worked, the amount of room you have for the antenna, the amount of money you have to spend on antennas, and the amateur's personal preference.
Are cross-element Yagi antennas always circularly polarized?
No. They can be circularly polarized with the correct phasing harness, or used as a way to switch between horizontal and vertical polarization with one antenna. No. They can be circularly polarized with the correct phasing harness, or used as a way to switch between horizontal and vertical polarization with one antenna.
Why vertical polarized wave is preferred over horizontal polarized wave in mobile radio communication?
1). Reflection of vertically polarized waves is less efficient, so vertical polarization is less susceptible to multipath fading due to ground-based reflection. 2). In order to avoid directional effects due to the radiation pattern of the receiving antenna (losing the mobile signal when the car turns a corner), the antenna wants to be vertical. That generally means vertical electrical polarization.
