2020-11-09 07:22
Hello World is the most common program in all computer programming languages, usually the beginning of the documentation of the programming language by displaying a program that pr… Read More
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Best Antenna Sources and Reviews - Digital TV Antenna , HDTV Antenna, Cheap Antenna, DIY Antenna, Indoor and Outdoor Antenna, Yagi Antenna, Antenna Theory, Filter and Amplifier Antenna, WiFi Antenna, and Mobile Phone Antenna Reviews
2020-05-09 08:11
This articles is from Book of Digital computer electronics : an introduction to microcomputers , book written by Albert Paul Malvino.The SAP (Simple-As-Possible) computer has been designed f… Read More
2020-05-07 10:16
Afilter is a circuit that is capable of passing a specific range of frequencies while block-ing other frequencies. The four major types of filters include low-pass filters, high-pass… Read More
2020-04-22 09:50
Our company is representative for Algocraft Device Programmers, Please contact me for device programmers inquiries Writenow programmers and Writebefore programmers. We shipping worldwide !Ma… Read More
2020-04-22 02:07
IsatHub Satellite Service PlansThe IsatHub service is accessed from your smartphones, iPad , or iPod Touch (tm) or android device through the control app. The Voice app enables you to… Read More
2020-04-13 00:33
Why do I need Pre Amplifier ? this is common question shows up to you, when you TV reception interfere with near FM station or your TV can not pick up several channels. These common problems… Read More
2020-04-12 06:02
Now We look at this Omnidirectional Antenna from Channel Master.FeaturesChannel Master with Digital Reception Range: 50+ Miles (360° Omnidirectional) is approximately 80 km, it is dipole… Read More
2020-04-11 13:22
Winegard(tm) Carryout(tm) Anser Antenna is a portable satellite system tha required a user elevation setting to automatically acquire the desired satellite. As the user, you will need t… Read More
2020-04-10 10:49
With the increasing coverage area of satellite phones communicator providers, from Globalstar, Iridium, Inmarsat, Thuraya, it makes it easier for clients to have better communi… Read More
2020-04-08 07:23
Globalstar is American Satellite Communication Service company operated Low Earth Orbit (LEO) Satellites constellation. Globalstar Services is Satellite Phone Communication, Sate… Read More
2020-04-07 13:05
FTTx Internet Network solution FTTx Networks consists of 2, FTTH and FTTB.For small office, home, or SOHO, or apartment building. We called it a basic FTTx network project, which is usu… Read More
2020-04-07 06:58
The phone that will change photography. Galaxy S20, S20+, and S20 Ultra. With revolutionary 8K Video Snap changing how you capture not just video, but photography.Add in Samsung Kn… Read More
2020-04-06 05:19
Optical fiber cables are tested for attenuation using the cut back method or back reflection method . The cutback method is mainly used in test at the manufacturing facility and the back ref… Read More
2020-04-04 13:46
eero is smart wifi system that replace traditional wifi router, wifi extender and internet booster in One device eero system . eero works with eero TrueMesh Software App. Unlimited Mesh… Read More
2020-04-04 11:51
If you have to deal with radio frequency more than very rarely, it is helpful if you can easily weaken the signals in discrete steps. So you can e.g. Bring the output signal of an HF generat… Read More
2020-04-02 04:00
OA70 / IN34 / IN60 is Germanium Radio, choose only one type.Antenna high from Ground is high is possible, ground is a must to Steel Water pipe, or making one from a piece of copper approxima… Read More
2020-04-02 03:48
2N3055 is Power Transistor and Amplifier Transistor for General Purpose and can act as Photo Transistor by cutting the "hat cover" of this transistor. This photo transistor function of 2N305… Read More
2020-04-02 03:25
PowerWave StandThe Optimized Wireless Charging StandVersatile ViewingTwin charging coils let you watch videos in landscape orientation, or stand in portrait mode for web browsing and fa… Read More
2020-04-02 03:14
What's New?◆ 1500A Jump starts is an updated version of 1000A, it provides higher peak current for larger engines.◆ Supports a wide range of vehicles including 8.0L gas ( or up t… Read More
2020-04-02 03:10
If you travel by car, in the down town city, or more outside the city, now you don't need to be afraid if you run out the power of cellphones or laptop batteries and for other purposes, suc… Read More
2020-04-02 03:04
Office application on Linux and open source software is Libre Office . You can download libre office software from libreoffice.orgOr you can get Libre Office from package Linux Open Suse or… Read More
2020-04-02 02:53
Inmarsat IsatPhone Pro2 handheld satellite phone O units Blank Prepaid SimPACKAGE INCLUDES: Inmarsat IsatPhone 2 Satellite Phone, accessories, and a SIM card ready for activation by Seller… Read More
2020-04-02 02:50
Military-grade durability (MIL-STD 810F) Highest Ingress Protection (IP) rating in the industry (IP65)Battery Standby time: Up to 30 hours Talk time: Up to 4 hoursTwo-way SMS and short email… Read More
2020-03-28 09:23
Raspberi Pi 4 , tiny computer with support 4K dual display monitor , choice of RAM from 1GB, 2GB, 4 GB, high speed Giga bit ethernet, with wireless networking and bluetooth support. Fas… Read More
2020-03-27 15:19
SpotX is Great Device for Camping, mount climber, hiking to your family and friends while you far from them. It sync with google map and your family and friends could know your position in t… Read More
2020-03-23 14:46
Features This Antenna is Telescopic Antenna with dimension 13 inch lengthOff Road 13 Inch Antenna For Jeep Cherokee XJ 1984 - 2001Brand AntennaXPriceAntennaX price for $15.99… Read More
2020-03-23 10:55
When I design internet network for Internet Service Provider Company , we used many Router, Switch and Antenna is Mikrotik Products.And We have easily to setup with GUI - Graphical Use… Read More
2020-03-20 00:54
Do you feel annoyed often got problems in listening your favorite radio channels while traveling in the city or outside the city? I often experienced this. Especially when outside the… Read More
2020-03-19 01:24
Now We look at this Omnidirectional Antenna from Channel Master.FeaturesChannel Master with Digital Reception Range: 50+ Miles (360° Omnidirectional) is approximately 80 km, it is dipole… Read More
2020-03-18 00:39
Dish Playmaker Portable Satellite DishThis product RV Antenna only for 1 receiver.Perfect for the RV, camper, motorhome, cabin, fishing, hunting, or tailgating.Compatible with your current D… Read More
2020-03-18 00:11
Winegard Portable Satellite Antenna Carryout G2+Compare with old type G2, G2+ features a power inserter to provide single cable coax entry to the RV making set up and operation eas… Read More
2020-03-17 22:53
The fundamentals of our antenna project are described through basic antenna characteristics. In general this starts with establishing the antenna’s radiation pattern, gain and directiv… Read More
2020-03-14 08:11
Gigabit Ethernet Ports with 5 Ports with 4 x PoE with PoE 55 WattUnmanaged Switch: Plug and play solution to connect all your network devices without the complications of configuration… Read More
2020-03-14 04:12
Unshakable HERO camera ever. A streamlined design makes it more pocket able than ever, and swapping mounts takes just seconds, thanks to built-in folding fingers. And with the optional Media… Read More
2020-03-14 03:06
Sony HDTV 4K with HDR Technology and Processor X1 Ultimate Technology from Sony, with intelligent processing and ultimate realism , make Sony TV 85 Inch Enhanced have Contrast Brightness in… Read More
2020-03-13 09:44
The Best Gaming Headset MPOW EG3 Pro Immerse yourself in games with this surround sound gaming headset. The microphone boom not only swivels but is also bendable, allowin… Read More
2020-03-12 07:08
“Free-Energy Devices” or “Zero-Point Energy Devices” are the names applied to systems which appear to produce a higher output power than their input power. Ther… Read More
2020-03-11 02:10
ClearStream Eclipse Sure Grip HDTV Antenna35 Mile RangeThe ClearStream Eclipse Sure Grip TV Antenna with new advanced performance to receive a greater range of frequencies 35 miles from… Read More
2020-03-08 10:16
High-Speed Dual Band for Better Wi-Fi ExperienceArcher T6E supports the newest Wi-Fi standard - IEEE 802.11ac, offering transfer rates that are 3 times faster than wireless N speeds. The Arc… Read More
2020-03-08 02:37
Today DealsPowerWave StandThe Optimized Wireless Charging StandVersatile ViewingTwin charging coils let you watch videos in landscape orientation, or stand in portrait mode for web brow… Read More
2020-03-07 16:09
Tired of high monthly cable or satellite bills? Just Cut it Now! Come join our family make life better, easier and more fulfilling!With Setek by DtillTop TV Antenna, enjoying popular nationa… Read More
2020-03-04 03:35
For 10KHz-1.5GHz MF HF VHF UHFMeasuring S parameters, voltage standing wave ratio, phase, delay, Smith chart and the likeWhat are S-parameters? S-parameters are complex matrix that… Read More
2020-03-02 03:22
The resonant longwire antenna is a standing wave antenna, because it is unterminated at the far end. A signal propagating from the feedpoint, toward the open end, will be reflected back towa… Read More
2020-03-02 02:51
Figure 9-5 shows the true resonant longwire antenna. It is a horizontal antenna, and if properly installed, it is not simply attached to a convenient support (as is true with the random leng… Read More
2020-03-01 14:39
The quad antenna was introduced in the chapter on beams. It is, nonetheless, also emerging as a very good VHF/UHF antenna. It should go without saying that the antenna is a lot easier to con… Read More
2020-03-01 03:47
One of the more saintly antennas used on the VHF boards is the halo (Fig. 18-12). This antenna basically takes a half-wavelength dipole and bends it into a circle. The ends of the dipole are… Read More
2020-02-29 16:09
The groundplane antenna is a vertical radiator situated above an artificial RF ground consisting of quarter-wavelength radiators. Groundplane antennas can be either 1⁄4-wavelength or 5… Read More
2020-02-29 16:05
The J-pole antenna is another popular form of vertical on the VHF bands. It can be used at almost any frequency, although the example shown in Fig. 18-10 is for 2 m. The antenna radiator is… Read More
2020-02-29 16:02
The 5⁄8-wavelength antenna (Fig. 18-9) is popular on 2 m for mobile operation because it is easy to construct, and it provides a small amount of gain relative to a dipole. The radiator… Read More
2020-02-29 15:56
Figure 18-8 shows the construction details for a six-element 2-meter Yagi beam antenna. This antenna is built using a 2 2-in wooden boom and elements made of either brass or copper rod. Th… Read More
2020-02-29 15:50
The Yagi beam antenna is a highly directional gain antenna, and is used both in HF and VHF/UHF systems. The antenna is relatively easy to build at VHF/UHF. In fact, it is easier than for HF… Read More
2020-02-29 15:43
Gain in antennas is provided by directivity. In other words, by taking the power radiated by the antenna, and projecting it into a limited direction, we obtain the appearance of higher radia… Read More
2020-02-29 15:40
The coaxial vertical is a quarter-wavelength vertically polarized antenna that is popular on VHF/UHF. There are two varieties. In Fig. 18-5A we see the coaxial antenna made with coaxial cabl… Read More
2020-02-26 07:33
Another loop antenna is shown in Fig. 16-3. This antenna has a Faraday feed system rather than a capacitor-coupled feed system, as did the Patterson loop. The tuning is accomplished by CA, t… Read More
2020-02-26 07:32
Still another loop is shown in Fig. 16-4. This loop relies on magnetic coupling to perform the coupling of the transmitter. In this loop antenna, the coupling is via a small coupling loop… Read More
2020-02-26 07:26
The Patterson (1967) loop antenna is shown in Fig. 16-2. It is made from 1.5-in copper tubing. Segments are cut and are joined together by eight 45° elbow joints, giving the octagon shap… Read More
2020-02-26 07:23
One of the more effective ways to make a shielded loop is to use coaxial cable. Figure 15-14 shows the circuit of such a loop. Although only a single-turn loop is shown, there can be any num… Read More
2020-02-26 07:22
A capacitance is formed whenever two conductors are side by side. A coil produces capacitance as well as inductance because the turns are side by side. Unfortunately, with large multiturn lo… Read More
2020-02-25 05:28
WIFI LAN WLAN antenna for Modem PCI Card and Router. Price US$50 , with shipping cost and tax Package contents:- Yagi antenna for wifi, just like in the product photo.D… Read More
2020-02-25 04:28
Description Radio shark fin antenna new hybrid car Jazz Brio Mobilio BRV HR, BMW, Mercedes, Volvo, all Suitable Sedan and MPV Cars Only US$ 7.99 per pcs, shipping cost and tax not… Read More
2020-02-25 04:14
Sharpening the loop Many years ago, the Q-multiplier was a popular add-on accessory for a communications receiver. These devices were sold as Heathkits, and many construction projects c… Read More
2020-02-25 04:06
Most readers will use a loop for DXing rather than hidden transmitter hunting, navigation, or other RDF purposes. For the DXer, there are actually two uses for theloop. One is when you are a… Read More
2020-02-25 04:02
The loop antennas discussed thus far in this chapter have all been unshielded types. Unshielded loops work well under most circumstances, but in some cases their pattern is distorted by inte… Read More
2020-02-25 03:56
OK, sports fans, what do you do when the best game of the week is broadcast only on a low-powered AM station and you live at the outer edge of their service area where the signal strength le… Read More
2020-02-25 03:34
Loop performance is greatly enhanced by tuning the inductance of the loop to the desired frequency. The bandwidth of the loop is reduced, which reduces front-end overload. Tuning also increa… Read More
2020-02-25 03:10
It is common practice to make a small loop antenna with two loops rather than just one. Figure 15-5 shows such a transformer loop antenna. The main loop is built exactly as discussed above:… Read More
2020-02-25 03:02
A wire loop antenna is made by winding a large coil of wire, consisting of one or more turns, on some sort of frame. The shape of the loop can be circular, square, triangular, hexagonal, or… Read More
2020-02-24 04:22
Radio direction finders and people who listen to the AM broadcasting bands, VLF, medium-wave, or the so-called low-frequency tropical bands are all candidates for a small loop antenna. These… Read More
2020-02-23 10:50
The half-delta sloper (HDS) antenna (Fig. 14-9) is similar to the full delta loop, except that (like the quarter-wavelength vertical) half of the antenna is in the form of an “image&rd&hell…Read More
2020-02-23 10:46
The bisquare antenna, shown in Fig. 14-10, is similar to the other large loops, except that it is /2 on each side, making a total wire length of two wavelengths. This antenna is built like… Read More
2020-02-23 10:44
The delta loop antenna, like the Greek uppercase letter “delta” (∆) from which it draws its name, is triangle-shaped (Fig. 14-8). The delta loop is a full wavelength, with… Read More
2020-02-23 10:40
The demiquad is a single-element 1 quad antenna. The length of the antenna is, like the cubical quad beam antenna (see Chap. 12), one wavelength. Figure 14-7 shows a type of demi-quad based… Read More
2020-02-23 10:29
If size is not forcing you to a /2 loop, then a 1 loop might be just the ticket. It produces a gain of about 2 dB over a dipole in the directions that are perpendicular to the plane of the… Read More
2020-02-17 07:04
THERE ARE TWO BASIC FORMS OF LOOP ANTENNAS: SMALL AND LARGE. THESE TWO TYPES have different characteristics, work according to different principles, and have different purposes. Small loops… Read More
2020-02-17 06:55
A directional antenna has the ability to enhance reception of desired signals, while rejecting undesired signals arriving from slightly different directions. Although directivity normally me… Read More
2020-02-17 02:34
THE DIRECTIONAL BEAM ANTENNA DOES SEVERAL JOBS. FIRST, IT PROVIDES AN APPARENT increase in radiated power, because it focuses available transmitter power into a single (or at worst limited)… Read More
2020-02-17 02:02
The phased vertical antenna concept can be used to provide round-the-compass control of the antenna pattern. Figure 11-5A shows how three quarter-wavelength verticals (arranged in a triangle… Read More
2020-02-17 01:53
The second variation, shown in Fig. 11-2B, supposedly produces a 180° phase shift between antenna A and antenna B, when length L3 is an electrical half-wavelength. According to a much-pu… Read More
2020-02-16 11:19
THE VERTICAL ANTENNA IS A PERENNIAL FAVORITE WITH RADIO COMMUNICATIONS users. The vertical is either praised, or cursed, depending upon the luck of the owner. “DXability” is usua… Read More
2020-02-16 11:06
The half-wavelength dipole is too long for some applications where real estate is at a premium. The solution for many operators is to use a coil-loaded shortened dipole such as shown in Fig… Read More
2020-01-08 10:29
The cubical quad antenna is a one-wavelength square wire loop. It was designed in the mid-1940s at radio station HCJB in Quito, Ecuador. HCJB is a Protestant missionary shortwave radio stati… Read More
2020-01-07 03:42
The longwire antenna is an end-fed wire more than 2λ long. It provides considerable gain over a dipole, especially when a very long length can be accommodated. Although 75- to 80-m, o… Read More
2020-01-07 03:41
Rhombic inverted-vee antenna A variation on the theme is the vertically polarized rhombic of Fig. 6-23. Although sometimes called an inverted vee—not to be confused with the dipo… Read More
2020-01-06 23:19
The vee-sloper antenna is shown in Fig. 6-22. It is related to the vee beam (covered in Chap. 9), but it is built like a sloper (i.e., with the feed end of the antenna high above ground). Th… Read More
2020-01-06 23:15
The tilted, center-fed, terminated, folded dipole(TCFTFD, also called the T2FD or TTFD) is an answer to both the noise pickup and length problems that sometimes affect other antennas. For ex… Read More
2020-01-06 23:06
Perhaps the cheapest approach to very serious antenna gain is the collinear Franklin array shown in Fig. 6-20. This antenna pushes the dipole and double extended Zepp concepts even farther… Read More
2020-01-06 01:46
The double extended Zepp antenna (Fig. 6-19) provides a gain of about 2 dB over a dipole at right angles to the antenna wire plane. It consists of two sections of wire, each one of a lengthT… Read More
2020-01-06 00:45
The sloping dipole (Fig. 6-8) is popular with those operators who need a low angle of radiation, and are not overburdened with a large amount of land to install the antenna. This antenna is… Read More
2020-01-06 00:41
The inverted-vee dipoleis a half-wavelength antenna fed in the center like a dipole. By the rigorous definition, the inverted-vee is merely a variation on the dipole theme. But in this form… Read More
2020-01-04 02:38
The simple dipole, or doublet, is a case in point. This antenna is also sometimes called the Hertz, or hertzian, antenna because radio pioneer Heinrich Hertz reportedly used this form in his… Read More
2020-01-03 12:06
In today wireless communication, there has been an increasing need for more compact, portable and wideband radiators. There is a need to evolve antenna designs to minimum size which can b… Read More
2020-01-03 10:08
General DescriptionXilinx® 7 series FPGAs comprise four FPGA families that address the complete range of system requirements, ranging from low cost, small form factor, cost-sensitive, hi… Read More
2019-12-19 09:10
Description Programmer ATMEGA16 ATmega32 AVR Board + USB ISP USBasp For ATMELISP ATMEGA16 ATmega32 Minimum BoardProduct Features:1. 32 I/O pin all the leads.2. Classic ATmega16 minimum syste… Read More
2019-12-19 03:31
Description ADS1115 I2C 16 Bit Module ADC 4 Channel For microcontrollers, Price US$ 5 (Shipping Cost and Tax Not Included)ADS1115 I2C 16 Bit Module ADC 4 ChannelFor microcontrollers without… Read More
2019-12-19 03:27
Description USB ASP downloader , Price only US$ 5, Tax and Shipping Cost not included ( Order Now)Product DescriptionUSB ASP used for download program to microcontrollerFeatures:On-board ATM… Read More
2019-12-19 03:27
Description SCM TTL to RS485 Converter 485 to Serial UART USART Automatic Flow, Price US$ 5, Tax and Shipping Cost not included Highlights:(1) Compatible with 3.3V and 5.0V power… Read More
2019-11-18 02:47
Sale Arduino Nano 328 US$ 12 , tax not included Read More
2019-11-16 10:03
0.047 Plug R/A PAB MountPlease contact for Inquiries : [email protected] ; [email protected] ; WA : +6287774323525 Read More
2019-11-16 08:10
2019-11-16 08:06
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