|
29 Ham Radio Qsl Cards Equipment Photos Antenna
If you cannot see what you were looking for please search our site. |
|
|
29 Ham Radio Qsl Cards Equipment Photos Antenna
If you cannot see what you were looking for please search our site. |
|
|
Do you know anything about this topic? Share your expertise with our thousands of visitors each day by submitting your quality, informative 'Antennas Equipment' article, and if you become a member we will pay you for your unique and original work (note that all submissions are reviewed by our editors). Your Antennas Equipment Guide is Michael Russell. Recent articles submitted to your independent guide to Antennas Equipment 1. Antenna - The Basics - By: Michael Russell An antenna is an electrical conductor that can transmit and receive radio waves. You can commonly find one connected to a television, radio, or wireless LAN (Local Area Network). Radio waves are composed of magnetic and electric fields. A transmitting antenna will convert electrical current from the... Featured ArticleAntenna - Mobile Cb Antennas If you were around in the mid 70s in the United States you'd have to have been living under a rock not to know about the great citizen band radio craze made popular by the smash hit "Convoy" by C. W. McCall. And if you were into citizen band radio at all you knew that there was a certain prestige to having certain kinds of antennas, especially if you had a CB setup in your home. For the mobile units, the ones that were installed in your motor vehicle, the antennas were rather simple and relati ...
Read full story 2. Five Things To Watch Out For When Installing - By: Michael Russell An Antenna or Satellite Dish on your Roof Antennas and satellite dishes are popular ways to connect your television or other different technical equipment. By investing in a dish or antenna, you will have more choices in your home for your entertainment. Dishes and antennas can pick up ... 3. Hdtv Antenna - By: Michael Russell Back in the 1960's and 70's just about every house in North America and most of the world had a television antenna on its roof. The only way you could get any programs on your television back then was by picking up the broadcast signal sent out by your local TV stations using a TV antenna. br ... 4. Antenna Basics - By: Michael Russell An electrical device designed to receive and transmit electromagnetic waves is called an antenna. Antennas are commonly used in radio, television broadcasting, cell phones, radar and other systems involving the use of electromagnetic waves. Since electromagnetic waves can pass thru any medium at a c... 5. Impedance Is Similar To Refractive Index In Optics - By: Driskill The resonant frequency is related to the electrical length of the antenna. Antennas have practical use for the transmission and reception of radio frequency signals, which can travel over great distances at the speed of light, and pass through nonconducting walls. Typically an aerial is tuned for a ... 6. A Dummy Load May Have A Swr Of 1:1 But An Efficiency Of 0, As It Absorbs All Power And Radiates Heat But Not Rf Energy, Showing That Swr Alone Is Not An Effective Measure Of An Efficiency - By: Driskill A SWR of 1.5:1 is considered to be marginally acceptable in low power applications where power loss is more critical, although an SWR as high as 6:1 may still be usable with the right equipment. However, for line-of-sight communications, it can make a tremendous difference in signal quality to have ... 7. Let’s Talk Cost – A Money Perspective On Hdtv - By: Michael Russell Ok, let’s talk money, and how much will it cost to set up a HDTV home theater. These could only be found in millionaire movie stars and producer’s homes. Now with all the new equipment on the market, it’s possible to set up your home theater without spending millions. The first item you... 8. Electrically Short Are Typically Used Where Operating Wavelength Is Large And Space Is Limited, E.g - By: Driskill Electrically short are typically used where operating wavelength is large and space is limited, e.g. In plain language, this is a directional aerial that can be aimed without moving any parts. The total area within these cells, determines the coverage of a network service provider. Anot... 9. Decode The Answer – The Equipment You Need To Go To Hdtv - By: Michael Russell HDTV provides excellent television picture and sound quality. Furthermore, most broadcasters, after receiving a push from the FCC, are broadcasting television shows in HDTV. But, to take advantage of this high-quality television viewing and the program offerings, it is necessary to have the right ... 10. Pet Microchips - By: Michael Russell Pet microchips are highly useful, especially if you let your pet outside. Have you ever let your cat outside, only to experience the stress of them not returning after a day or two? When this happens you always think the worst happens. It is easy to assume that they haven?t come back because they go... 11. Failing That, User Reviews On The Web Are A Good Source - By: Driskill Failing that, user reviews on the Web are a good source. Depending on the distance between the transmitter and the receiver the amplification compared to a normal pole antenna can be as high as 40 to 50 dB. However, if you prefer to receive HDTV through an antenna, rather than a satellite or cable s... 12. Antenna -tell Me If The Picture Is Clear - By: Michael Russell Was it really so long ago; now it seems like another life altogether. Pieces of our lives seem to disappear at a rapid pace; and what's even more scary is that you look around and you can't even see a trace of the past. Even people whose economic means won't allow them to participate in ... 13. Maxwell's Equations Predict That A Changing Magnetic Field Induces A Changing Electric Field, So We Now Have Both Magnetic And Electric Fields Around The Circuit, Creating An Electromagnetic Field Called The Reactive Field Or Inductive Field - By: Driskill All of these parameters are expressed in terms of a transmission antenna, but are identically applicable to a receiving antenna, due to reciprocity. Maxwell's equations predict that a changing magnetic field induces a changing electric field, so we now have both magnetic and electric fields around t... 14. Airlanes Need For Radar, Gps, Radio, Beacons, And Voice Radio - By: Driskill However, when the current stops, these fields collapse, returning energy to the power supply. It is considered to be a point in space with no dimensions and no mass. The quad antenna is an array of square loops that vary in size. The receiving aperture can be greatly increased by bringing... 15. Conclusion: This Article Is By No Means Trying To Undermine The Achievements Or The Potential The Technology Has To Offer - By: Driskill By definition they are not planar. The person should also think if it is really needed for one's home. This is frequently assumed to be circular and given as a diameter or the degree of the radiation cone. In order to solve this, one should check if the external antenna is really needed. ... 16. Although Any Circuit Can Radiate If Driven With A Signal Of High Enough Frequency, Most Practical Are Specially Designed To Radiate Efficiently At A Particular Frequency - By: Driskill Although any circuit can radiate if driven with a signal of high enough frequency, most practical are specially designed to radiate efficiently at a particular frequency. First of all, if you can, you should opt a roof or attic mounted HDTV aerial. Each doubling of the dish radius will quadruple t... 17. Gps - A Brief Overview - By: Michael Russell The Global Positioning System (GPS) is a satellite-based navigation system owned and developed by the United States Department of Defense. It is officially named NAVSTAR (NAVigation Satellite Timing And Ranging) GPS. During the 1980s, the United States government made the GPS available for public us... 18. This Region Is Called The Antenna Blind Cone Or Null - By: Driskill This region is called the antenna blind cone or null. Adding a reflective dish can increase the energy collecting area of the aerial without further narrowing the beam angle. When the length of the antenna approaches the wavelength of the signal, the current along the antenna is no longer... 19. Bandwidth Over Which An Antenna Exhibits A Particular Radiation Pattern Might Also Be Considered - By: Driskill It is claimed that the dielectric contains the near field and therefore prevents it from interfering with other nearby or circuits, making it suitable for miniature equipment such as mobile phones. Bandwidth over which an antenna exhibits a particular radiation pattern might also be considered.... 20. The Telephone Network Then Locates The Nearest Antenna Available For The Person You Are Trying To Call And Connects You To That Mobile - By: Driskill The concept: Even though technology has become widely known as wireless, this is only true between your handset and your nearest receiving aerial. There was a time that an individual had to dial up just to get an internet connection. Typically, are designed to operate in a relatively na... 21. The Dip Antenna Is Simply Two Wires Pointed In Opposite Directions Arranged Either Horizontally Or Vertically, With One End Of Each Wire Connected To The Radio And The Other End Hanging Free In Space - By: Driskill It is claimed that the dielectric contains the near field and therefore prevents it from interfering with other nearby or circuits, making it suitable for miniature equipment such as mobile phones. The quad is related to the loop in exactly the same way the yagi is related to the dip. br /... 22. More Generally, Interferometry Allows The Combining Of Signals From Several Radio Receivers Or A Single Moving Receiver - By: Driskill Typically, a random wire aerial will also require an antenna tuner, as it might have a random impedance that varies nonlinearly with frequency. Most gains are measured with reference to an isotropic radiator, and are rated in dBi. Multiple can be combined in one physical device to save space and... 23. Another Way Of Letting People Have Internet Access At Home Or In The Office Is By Adding Another Access Point - By: Driskill Unfortunately, every HDTV antenna is not alike and the quality of your picture can vary greatly depending on which antenna you choose. Another way of letting people have internet access at home or in the office is by adding another access point. This is because the signal could reach people who live... 24. The Receiving Aperture Can Be Greatly Increased By Bringing The Loop Into Resonance With A Tuning Capacitor - By: Driskill The small loop aerial which is made so that both ends of the wire connect to the radio less than a wavelength in circumference. However, when the current stops, these fields collapse, returning energy to the power supply. A dielectric resonator is a variation on the conventional antenna i... 25. The Polarization Of An Aerial Or Orientation Of The Radio Wave Is Determined By The Electric Field Or E-plane - By: Driskill A SWR of 1.5:1 is considered to be marginally acceptable in low power applications where power loss is more critical, although an SWR as high as 6:1 may still be usable with the right equipment. One limitation of this antenna is that it does not radiate or receive in the direction in which the rod p... Please feel free to submit your quality, informative article for our readers. |
| Digital Antenna Da4100: P Digital Antenna DA4100 4-way multiple cell phone combiner allows you to use four cellular phones or cellular based equipment such as a security sytem simultaneously with one antenna system. Cell phones connect to mini-UHF connectors on combiner's cell phone port. Cell phone's external antenna adapter cable can be connected directly to the combiner. Due to insertion loss use with Digital Antenna... |
| Trendnet Trendnet Tew-ao09d 9dbi Indoor / Outdoor High-gain Directional Antenna - 9 Dbi N-type (female) - Directional Antenna TRENDnet TRENDnet TEW-AO09D 9dBi Indoor / Outdoor High-Gain Directional Antenna - 9 dBi N-Type (Female) - Directional Antenna . The TEW-AO09D 9dBi Indoor / Outdoor Directional Antenna provides long distance point-to-point connectivity for your wireless network. As an optional antenna for your IEEE 802.11b/g 2.4GHz wireless network equipment, you can install it outdoors for long dista... |
| Trendnet Trendnet Tew-ao19d 19dbi Outdoor High-gain Directional Antenna - 19 Dbi N-type (female) - Directional Antenna TRENDnet TRENDnet TEW-AO19D 19dBi Outdoor High-Gain Directional Antenna - 19 dBi N-Type (Female) - Directional Antenna . The TEW-AO19D 19dBi Outdoor Directional Antenna provides long distance point-to-point connectivity for your wireless network. As an optional antenna for your IEEE 802.11b/g 2.4GHz wireless network equipment, you can install it outdoors for long distance point-to-po... |
| Trendnet Trendnet Tew-ai75ob Dual-band Indoor Omni Antenna - 7 Dbi, 5 Dbi Reverse Sma Female - Omni-directional Antenna TRENDnet TRENDnet TEW-AI75OB Dual-band Indoor Omni Antenna - 7 dBi, 5 dBi Reverse SMA Female - Omni-directional Antenna . The TEW-AI75OB Dual-band Indoor Omni Antenna with Mounting Base provides more power and greater range for wireless network. As an optional antenna for IEEE 802.11b/g 2.4 GHz or IEEE 802.11a 5 GHz wireless network equipment, TEW-AI75OB will significantly improve si... |
| Trendnet Trendnet Tew-ai86db Dual-band Indoor Directional Antenna - 8 Dbi, 6 Dbi Reverse Sma Female - Directional Antenna TRENDnet TRENDnet TEW-AI86DB Dual-Band Indoor Directional Antenna - 8 dBi, 6 dBi Reverse SMA Female - Directional Antenna . The TEW-AI86DB Dual-Band Indoor Directional Antenna with Mounting Base provides more power and greater range for wireless network. As an optional antenna for IEEE 802.11b/g 2.4 GHz or IEEE 802.11a 5 GHz wireless network equipment, it will significantly improve s... |
Visit these special sites and click on the button to donate at no cost to you!
Protect women's health |
Protect children's health |
Give the gift of reading |
Save endangered land |
Feed animals in shelters |
Feed the hungry |
Copyright © 2001-2008 MgrCentral Pty Ltd (Australian Company Number 098759972) 54 Forillion Avenue, Bibra Lake, WA 6163, Australia Tel: +61 8 9418 4013 Fax: +61 8 9494 2674 Michael Russell, CEO | |||||
|
Our network has received |
|||||
