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The choice between a 30 MHz and a 100 MHz antenna depends on the intended application. A 30 MHz antenna is typically better suited for long-range communication, as lower frequencies can propagate over longer distances and penetrate obstacles more effectively. Conversely, a 100 MHz antenna is generally more suitable for higher data rates and shorter-range applications, such as FM broadcasting or certain types of telemetry. Ultimately, the "better" option depends on your specific needs and operating environment.
What else can I help you with?
Why do radio waves with extremely long wavelengths such as ELF radio waves need huge antennas?
Answer: An antenna is a tuned circuit, so it have to be tuned to the wavelength of the signal that it will transmit. If the antenna is not tuned properly some of the transmitted power will be feed back to the transmitter and will damage the output stage, SWR (Standing Wave Ratio) is very important, that is the ratio between the power that is transmitted by the antenna and the power that is fed back to the transmitter a zero is ideal but not always possible.The lower the frequency the longer the wave length and a 1/4 wave length is the minimum length that will give one a good SWR. The formula to use when one design a antenna is 300/frequency in MHz, if the frequency is 30 MHz then it is 300/30 = 10 Meter divide it by 4 to get the length of the 1/4 wave antenna that is 2,5 meters.Note: The antenna have to be multiples of a 1/4 wavelength like 1/2 wave or full wave, a 5/8 length can be used but it will need a L/C circuit at the input of the antenna to tune it to the frequency.
What is the typical bandwidth of a satellite transponder?
38 MHz. digital bit-rates vary depending on compression, modulation, typically QPSK. Expect at least 30 Mbps.
If a 100 ohm resistor is needed in an electric circuit carrying a current of 0.3 amperewhat resistor would you select?
A 100 ohm resistor carrying a current of 0.3 amperes would, by Ohm's Law, have a potential difference of 30 volts. A current of 0.3 amperes through a voltage of 30 volts would, by the Power Law, dissipate a power of 9 watts. You need a 10 watt resistor, alhough it is better to use a 20 watt resistor. E = IR 30 = (0.3)(100) P = IE 9 = (30)(0.3)
What is RFID frequency range?
RFID tags use low, high, ultra-high and microwave frequencies. Each frequency has advantages and disadvantages that make them more suitable for some applications than for others. Countries will also have specific laws or regulations in place that prevent the use of certain frequencies.Low-frequency: Operates from 30 KHz to 300 kHz, with typical operation being 125 kHz or 134 kHz. Advantages of LF are that they are going to be less subject to interference. Disadvantages of LF will be slow data transfer and the tags will must be read within three feet.High-frequency: Operates from around 3 MHz to 30 MHz, and typically is used at 13.56 MHz. Advantages are that they have a slightly longer range than LF tags and have a faster data transmission. Disadvantages are that they will consume more power than LF tags.Ultra-high-frequency: Operates from 300 MHz to 3 GHz and are usually found to operate in the 866 MHz to 960 MHz range. Advantages are that they will send information faster and farther than both LF and HF tags. Disadvantages are that their waves will not pass through items with high water content (including fruits and vegetables).Microwave: Operate at 2.45 - 5.8 Ghz. Advantages are that they have very fast data transfer rates and can be read from much greater distances than LF, HF, and UHF tags. Disadvantages are high power consumption and high cost.Note: Some persons refer to all tags operating above 415 MHz a Microwave tag
What is the resistance of 70ohms and 30 ohms in a parallel circuit?
we have this 1/Re = (1/R1)+(1/R2) for calculating the effective resistance when resistances are connected in parallel so the answer would be Re =( 70*30) / (70+ 30) = 21 ohms
when The AN/PRC-152 handset comes with two removable antennas. Identify the TWO types of antennas and their corresponding frequency ranges.?
-30 to 108 MHz blade antenna-30 to 512 MHz whip antenna
What is the relationship between frequency and antenna height?
For horizontal antennas operating below 30 MHz the optimum height is half a wavelength, so the height in metres would be 149.9/Frequency in MHz.
What is frequency band for FM?
30 Mhz - 300 Mhz
An Aircraft vhf communicaion radio is operated at 30 Mhz and how to calculate its wave length?
The frequency can't be 30 Mhz 30 Mhz is a ham radio frequency but to calculate the wavelength, devide 300 by the frequency in Mhz that will give you 10 meters (300/ƒ)
What is HF band for radiocommunications?
The HF band is considered to be 3 Mhz to 30 Mhz.
What frequency range is the Very High Frequency band?
30 MHz to 300 MHz
What is the wave length of 10 MHz?
The full wave length of 10 MHz is 30 metres.
In MegaHertz what is the frequency of longwave?
Longwave frequencies typically range from 30 kHz to 300 kHz in the electromagnetic spectrum, corresponding to 0.03 MHz to 0.3 MHz in MegaHertz (MHz).
What are the needed specs for the rf cable to elevate its omni-directional antenna to the maximum height using a 30 watt vhf 136-174 mhz repeater?
Set the antenna at 1/4 wavelengths high to the specific frequency that you want to use. Cut the coax feed wire to multiples of 1/2 wavelengths of the specific frequency that you want to use,
Why do radio waves with extremely long wavelengths such as ELF radio waves need huge antennas?
Answer: An antenna is a tuned circuit, so it have to be tuned to the wavelength of the signal that it will transmit. If the antenna is not tuned properly some of the transmitted power will be feed back to the transmitter and will damage the output stage, SWR (Standing Wave Ratio) is very important, that is the ratio between the power that is transmitted by the antenna and the power that is fed back to the transmitter a zero is ideal but not always possible.The lower the frequency the longer the wave length and a 1/4 wave length is the minimum length that will give one a good SWR. The formula to use when one design a antenna is 300/frequency in MHz, if the frequency is 30 MHz then it is 300/30 = 10 Meter divide it by 4 to get the length of the 1/4 wave antenna that is 2,5 meters.Note: The antenna have to be multiples of a 1/4 wavelength like 1/2 wave or full wave, a 5/8 length can be used but it will need a L/C circuit at the input of the antenna to tune it to the frequency.
What is an OE-254 antenna?
The OE-254 is a portable, omnidirectional antenna designed primarily for military communication systems. It operates within the frequency range of 30 to 512 MHz, making it suitable for various applications, including VHF and UHF radio communications. The antenna is known for its ruggedness and ease of deployment, often used in field operations or tactical environments. Its design allows for efficient signal transmission and reception, enhancing communication capabilities in diverse conditions.
What is the operating frequency of 8085 microprocessor?
From the Wikipedia article, it looks like they would operate at 3, 5, or 6 megahertz (MHz), or maybe it's 3.5 MHz and 6 MHz (they use 3,5 - not sure if that's a European decimal point or a comma)
