Table of Contents
What does the size of an antenna mean?
Antennas are widely used in the field of communications. The length of the antenna is inversely proportional to the frequency and directly proportional to the wavelength. The higher the frequency and the shorter the wavelength, the shorter the antenna can be made.
What is the length of antenna?
Antenna lengths for popular ham radio bands
| Approximate Lengths for Ham Band Dipole Antennas | ||
|---|---|---|
| Band (MHz) | Length (feet) | Length (metres) |
| 3.5 | 137 | 42.2 |
| 7.0 | 68.5 | 21.1 |
| 10.1 | 47.5 | 14.7 |
How do you measure electrical antenna length?
To calculate the electrical length of the line you need to multiply the velocity factor of the line (available from the supplier of the line) by the free space length. For the length in feet, this is (983.6 / frequency in MHz) * velocity. For the length in meters, this is (299.8 / frequency in MHz) * velocity.
Does the length of antenna matter?
So the answer is yes, size does matter, but bigger isn’t always better. It all depends on what your transmitting and receiving frequencies are. Theoretically, a longer antenna will have a greater range, but it is far more important for optimal radio performance that the length of the antenna matches the frequency.
What is the circumference of volleyball?
Volleyball characteristics
| Circumference cm (inches) | Mass grams (ounces) | |
|---|---|---|
| Standard indoor | 65-67 (25.5-26.5) | 260-280 (9.2-9.9) |
| Youth indoor | 63-65 (25-26) | 260-280 (9.2-9.9) |
| Beach | 66-68 (26-27) | 260-280 (9.2-9.9) |
What is the standard circumference of the volleyball?
65-67 centimeters
A regulation volleyball should be 65-67 centimeters in circumference and weigh 260-280 grams (9-10 oz). The ball’s inside pressure should be 0.30-0.325 kg/cm2 (4.26-4.61 psi).
https://www.youtube.com/watch?v=2TDhQLjGKvM