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Any piece of wire or metal is an antenna if all you need is to receive. If you are going to transmit - stick a piece of wire in your antenna jack and cut it off at 6.8 inches from the jack. For better reception and transmitting connect a 50 ohm coax with a connector that fits your radio and run it as high up (vertically) as you can. Cut 7 inches of the outer insulation from the top end of your coax and separate the outside shield wires so you can comb those down and over the insulation below the cut. When you get all the shielding wire combed out and "down" - then trim cut it at 6.8 inches long and tape it around the coax. Now cut the remaining "up" center wire lead to 6.8 inches. You now have a basic unity gain, 50 ohm impedance, vertically polarized, quarter wave antenna. Oh! Hang it up with nylon rope or hold it up with a plastic rod taped to it. Seal the insulation cut area and shield below with anything to prevent moisture intrusion. Also seal the cut top end. Coaxial cable causes loss of power - both receiving and teansmitting. Learn a bit about that too.
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Wiki User
∙ 14y ago
Wiki User
∙ 11y agoYou can get a higher gain antenna or add an amplifier. I'm not sure what you mean by "antenna extender". Are you trying to receive 433.92 or transmit on 433.92 or both?
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Claculate the length of the dipole antenna at 450 MHz?
245
Show how to make a 850 mhz antenna?
What kind of antenna? First you need to decide on what type; A really simple answer to this question is to cut a wire to the resonant 1/4 wavelength. This antenna would be 3 5/16 inches of wire.
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 a horn antenna?
A horn antenna is an antenna that consists of a flaring metal waveguide shaped like a horn to direct radio waves in a beam. Horn antennas are used as antennas at UHF and microwave frequencies that are above 300 MHz.
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.
Why High frequency reduce the size and weight of components?
The concept is, greater the frequency less will be the size of antenna and weight. For example the Mobile Phone uses the half wave dipoles antenna. There is no exact formula for calculating these antennas. The problem is that there are several factors that affect the antenna. Fortunately there is a starting formula for these types of antennas. For center fed, wire dipole antennas, the formula is length of antenna = 468/freq (MHz). Mobile phone in GSM working on the frequencies 900 MHz and 1800 MHz so put the values in the formula you get your answer. If you move further in the frequency band the size will be more small.
What is the optimum length am antenna?
[ (234) divided by (station frequency in MHz) ] feet, hanging vertically.
How can I find out about a remote control extender?
Smarthome (home automation superstore) has remote control extenders and lets you know which size MHz Kit you will need to purchase based on the system you are using.
What is the perfect length of antenna for a radio signal of 100 MHz?
The half-wave, center-fed 'dipole' antenna is probably the antenna that's simplest to design, and easiest to build and operate. For 100 MHz, it's a single wire, supported at its ends and insulated from the supports, hung horizontally, opened and connected to a 75-ohm coaxial cable at its center, with an overall length of 4 feet 11 inches (1.5 meters).
Will a 27mhz cb antenna work on your uhf cb radio?
No, this is not a wise move to make. The antenna metals are not the same. you have to know that antenna metals are different within all Mhz. 2nd- The connectors are different. CB has a wider coax connector and Uhf us smaller. Radio Range/ distance will be less if you use a short wave antenna known as CB. Best to get a High wave antenna- UHF. 27 Mhz is cb radio and the waves are low and long (about 11 meters). 400-460 Mhz is UHF and the waves are high and short (about 67 centimeters). You would need a UHF radio antenna to get the best SWR. Installing a UHF antenna on a car it would require a proper uhf antenna and coax and drilling and using only a UHF Coax cable with the connector. Or buy the Uhf magnet antenna. They are hard to find in your local city and they are pricy because you cant buy them used or at cb shops. you will have to buy one online or go to a Junk yard and find a Police car that has one on top of car. You can Mod Coax cables only if its a UHF cable and antenna. Grounding a car UHF antenna in house can be difficult. Don't run ground to AC ground! you can damage radio. Run Ground wire to the dirt outside and dig a hole and fix with a little water and keep hot coax separated from ground on uhf. Best is to run this to Gutter on roof. Do not MOD CB coaxes with UHF antenna or mix with magnet antenna or CB, VHF, Marine radios. You will waste your time. 800 Mhz police antenna will be your closest match if you decide to do this. It goes by the wave and wave length. Keep Digging
What is 900 Mhz in GHz?
It isn't a GHz yet... you need 1024 MHz to make 1 Ghz
How do you build a simple home use antenna?
== == For digital TV, you can build a DB4 antenna out of wire coat hangers and a piece of wood. Very simple to make. There are step by step instructions here - www.TheTutorGenie.com/DigitalAntenna.html - It works great. It depends on what you want to do with it. A receiving antenna for 40 m shortwave could be just a long piece of wire tacked to the walls. An antenna to transmit and receive at 440 MHz is a completely different animal. Here's a fun web site: http://www.ac6v.com/antprojects.htm
