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Monthly Archives: February 2016

Different Types Of Two Way Radio Antennas

An antenna is essentially the most crucial element of a two way radio and other transmitting application such as cell phones, television, radar, or satellite communication. It is responsible for performing the most important task – converting electric power to transmittable radio waves and the other way round.

How an Antenna Works

To transmit a signal, the transmitter provides an electric charge that oscillates at a specific radio frequency to the terminals of the antenna. Consequently, the antenna sends out corresponding electromagnetic waves. During reception, the antenna takes some of the power of the transmitted electromagnetic waves to generate an extremely small voltage for the terminals, which is then redirected to a receiver that amplifies the signals. This is basically how an antenna works.

Extensive Applications

The applications supported by an antenna go beyond communication. The same concept powers today’s high tech wireless applications that run computer networks; Bluetooth enabled systems, garage door openers, and baby monitors. It’s important to know that a perfectly functioning antenna is not only critical to the functioning of your two way radio; it also helps maintain the life or longevity of your equipment.

The Bigger, The Better

The first and most important rule of thumb about an antenna to keep in mind is that the taller it is, the higher your db gain. A high volume of db gain is critical to achieving a stronger reach and better performance of your two way radio equipment. This basically translates to, “the bigger, the better.” However, in order to achieve results in practical situations, the antenna can have only so much height. In essence you have to sacrifice convenience for performance or vice versa. You can’t walk around or even install a gigantic antenna for all your needs, say for example your car radio.

Positioning of Antenna

The second rule of thumb pertains to the positioning of your antenna. The most optimal position for then antenna would be the centre of your metal car roof. In situations where this is not possible, you would need a “no ground plane” antenna. A no ground plane is basically just a metal surface that goes around the base of your antenna so that you have something for the radiating signal to react with. The next aspect you need to consider for your antenna is the frequencies at which you would be transmitting on. A VHF radio transmits and receives in a range from 136 to 174 MHz.

Chubby and Long Antennas

There are different kinds of two radio antennas available depending on how you want to use it. The large stock antenna is powerful and can be replaced or upgraded as you require. The shorter or stubby antenna provides a great deal of convenience. You can add a longer whip antenna to enhance your range. When it comes to two way radios, you stand to gain a great deal of advantages by having a business radio that comes with a removable antenna. The one problem is that removable antennas may not necessarily be compatible with all kinds of radios.

Lenovo to phase out the Motorola brand name

The Motorola brand, which has been a fixture in the technology world for 85 years, is about to be phased out by its parent company Lenovo.

The US-born company was bought from Google by the Chinese giant in 2014, with the company continuing the lineage of Motorola handsets.

However, the days of the Motorola name appearing on phones and in marketing materials will come to an end this year.

Motorola Chief Operating Officer Rick Osterloh told CNET: “We’ll slowly phase out Motorola and focus on Moto.”

The company plans to simply use ‘Moto’ and the familiar batwing logo for high end devices, while all other handsets will feature the Lenovo Vibe branding. Even the top devices like the Moto X will feature the blue Lenovo logo rather than the Motorola name.

The rather complex blending of the two brands will involve Moto devices being introduced to Lenovo stronghold territories and marketed it as premium devices.

The budget Vibe devices will also be introduced to western markets to complement the high-end Motorola devices according to the report.

If this wasn’t confusing enough, the Motorola company is being retained from an organisational perspective and that division will now oversee all of Lenovo’s smartphones activity.

Motorola is credited with inventing the first mobile phone with the DynaTAC released in 1984. Likewise, the company’s importance to the development of consumer technology in other sectors cannot be overstated.

In 1930 it released one of the first commercially successful car radios and in the 50s had a major role in the foundation of cable television systems. In 1969 a Motorola radio transmitted the first words from the Moon to Earth and in 1990 it launched the world’s first digital HD television.

Adios, Motorola.

Whilst the Motorola Brand name is strong in the mobile phone and two way radio industry it is an important institute in the communications field that should be preserved, as this article says it was there at the start of telecommunications and has been around for longer than most of us can remember, it would be a shame if it was pulled apart by Lonovo.