Author Archives: schatzi

Repeater Station Antennas

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Repeater station antennas have gained popularity these days due to their high power to transmit signals. These antennas have the unique power to receive a weak or low frequency signal and transmit them into a high frequency signal for better reception and quality. They have a wide range of applications during emergency, fire brigade, ambulance, police and tow truck. These antennas are highly successful in different walks of life. There are different kinds based on the area of usage.

Though the antennas are most widely used among professionals they can also be used for excellent reception at home. If you are looking for high frequency then opt for an antenna that transmits signal at a high frequency. A duplex repeater antenna generally uses two different kinds of frequencies namely the input and output frequency. The main aim of this duplex repeater is to retransmit the signals at a high frequency for better reception. If you are looking for indoor antenna which has excellent reception then you can opt for repeater station antenna.

There are different kinds of these antenna’s that are used for several types of transmission of signals. They are generally of two types namely low level and high level. The low level antenna is generally placed at a low altitude to prevent interference with the other frequencies. The high level repeater is kept on top of tall buildings for maximum area of coverage. Hand held walkie talkies can make use of the high level for better reception and communication.

Radio transmission is also now made possible with the help of repeater station antennas. In this type of transmission the digital signals are transmitted over a frequency band between the base stations and the receptor. The numbers of repeater stations generally depend on the type of transmission. This type of transmission can also be used for telephone communication networks. These repeater stations are fully automatic and can be used when there is interruption between the signals. They can extend the communication range for excellent communication. If you are looking for an antenna with good reception and excellent range then go in for repeater station antenna. Morse code is mostly used form of identification.

Are you planning to get a repeater station antenna for good communication? Then don’t forget to look for high quality antennas. There are many shops that sell antenna for a very low price. You can compare different types and then choose the best one that fulfils your needs and usage. If you are looking for an antenna with the maximum coverage then you can even opt for multi beam antenna. The price of the repeater station antenna ranges from 25$ to 50$ depending on the frequency range. There are many online stores that sell antenna based on the needs of the customers.

Brass Vs Stainless Steel SMA Connectors

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The SMA can be constructed with either Brass of Stainless Steel bodies. Originally SMA’s were almost always stainless steel; for military applications, stainless steel is usually called out. A key difference between the 2 materials is the torque required for proper mating; an sma torque wrench for stainless steel adapters requires about 8 in-lbs torque; brass sma’s are tightened to 5 in-lbs; using an 8 in-lb torque wrench on a brass sma will twist the head of the connector off.

High quality SMA Connectors are usually built to the appropriate US mil-specs, which call out Teflon dielectric material, BeCu contacts, & 50 microinches minimum gold plating on the contacts. Brass sma’s, often targeting commercial applications with less severe environments & lower cost markets, may substitute plastic instead of Teflon; brass contacts instead of BeCu; and either 30 microinches, 10 microinches, or 3 microinches of gold plating on the contacts. The best SMA’s can work to 27 gHz; some very inexpensive versions work to only 3gHz.

For coaxial attenuators, an SMA attenuator can be either stainless steel or brass; likewise an SMA adapter can be of either material. Determining which material is appropriate, & which torque wrench to use, is essential in choosing the correct part for an application. SMA cables likewise come in both materials.

Coaxial adapters, using an SMA on one or either port likewise can be either brass or material. Use a stainless if unsure of what you need; use a brass part if it fits with the rest of the system, & you know brass is appropriate for your application. Always check for the appropriate torque setiing; unlike N’s and TNC’s, SMA require proper torque.

Advantages And Disadvantages Of HD Radio

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HD Radio is also known as High-Definition Radio. It first landed onto the market many years ago. The reasons why most consumers are unaware of the HD Radio option include the cost of equipment purchase, lack of marketing and push for satellite radio. HD Radio is free of charge. But, unlike satellite radio, you are required to purchase expensive equipment in order to get the exciting experience of this innovative technology. If you are considering purchase of such equipment, you must first understand the basis of the technology and its advantages and disadvantages. This way, you can find yourself in a much better position to determine what listening option is best for you.

Advantages of HD Radio The advantages of the HD Radio can be listed as follows.

  • It offers new and crisp, crystal-clear sound.
  • The HD Radio uses the advanced technology to display informational text on the radio screen.
  • This advanced digital display mechanism of the HD Radio has now enabled syndicated radio programs to provide regional and local information in a text format.
  • Both AM and FM frequencies are offered on HD Radio.
  • Because of this hottest new technology, the current AM sound will improve to the level at which we hear FM radio signal today.
  • Eventually, the listener gets more options in radio as the AM channels become more clear.

Disadvantages to HD Radio The disadvantages to HD Radio may include the following. ·

  • The HD Radio is not able to speak with a disc jockey.
  • HD Radio is designed to automate. It means it does not require disc jockey service. Therefore, if you have a question about an artist or a song, there will be no one to contact.
  • You may be listening to a continuous music format and nothing more because not all HD channels are presently using digital text display.
  • The equipment you need to purchase is quite expensive. The cost to purchase the equipment varies to purchase prices upwards of $1000 each.
  • However, you can also find a less expensive version in a clock radio, but cost still remains the primary factor, which prevents many from biting into the HD Radio market.

Criticism The HD Radio system has not been immune to criticisms.

  • Many find the claims of higher audio quality to be exaggerated or even untrue when multicasting is used, as individual channel rates are reduced.
  • Some also report a decrease in audio quality on the analog signal of stations that have taken up the system.
  • Another common criticism is that the use of the digital transmission format on the medium wave (AM) band is unreasonable because of high levels of interference and noise on the band.

Thus, there are various advantages and disadvantages of HD Radio. Therefore, you need to be prudent before you purchase the expensive equipment to enjoy the new technology.