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From Marconi and the transistor radio to DAB: the history of radio in ...

93 years ago this week, the BBC made its first radio broadcast. We look back at some of the most significant events in radio’s history. On November 14, 1922 the British Broadcasting Company began its first radio broadcast. Since then the radio landscape has c

Posted on:12-07 View:2455
What is antenna efficiency

Efficiency of a transmitting antenna is the ratio of power actually radiated (in all directions) to the power absorbed by the antenna terminals. The power supplied to the antenna terminals which is not radiated is converted into heat. This is usually through loss resistance in the antenna's co

Posted on:12-04 View:2185
What could be lost is found – Rewind Radio

A new online platform Rewind Radio has been launched today. Rewind Radio allows stations to make their audio content searchable and sharable, quickly and simply. The Australian invention is the brainchild of IT entrepreneur and former radio broadcaster Anthony Gherghetta, who came up with th

Posted on:12-04 View:412
what is the bandwidth of antenna

Although a resonant antenna has a purely resistive feed-point impedance at a particular frequency, many (if not most) applications require using an antenna over a range of frequencies. An antenna's bandwidth specifies the range of frequencies over which its performance does not suffer due to a

Posted on:12-03 View:608
Translators Getting Their Moment in the Sun

It’s been a busy season for the National Translator Association: fielding calls, lobbying on Capitol Hill, and calling again on the Federal Communications Commission to open a series of translator filing windows that would enhance direct broadcast service across the U.S. Radio World spoke wit

Posted on:12-03 View:680
AM Radio — Revitalized

The FCC moved forward with its effort to revitalize the AM band by relaxing certain technical rules and announcing a filing window for AM licensees to acquire and move FM translators up to 250 miles. The resolution comes after a compromise was brokered by Commissioner Clyburn and will offer four di

Posted on:12-02 View:408
What are current and voltage distribution of antenna

The antenna conductors have the lowest feed-point impedance at the resonant frequency where they are just under 1/4 wavelength long; two such conductors in line fed differentially thus realizes the familiar "half-wave dipole". When fed with an RF current at the resonant frequency, the qua

Posted on:12-02 View:3250
FM revenues to reach Rs 3,900 crore by 2020?

In a new report, Crisil said that the FM radio industry has the potential to nearly double revenues in the next 5 years from an estimated Rs 2,000 crore in 2015 to reach around Rs 3,900 crore. The global analytics company said ad volume would get a fillip as Phase III regulations will help ra

Posted on:12-01 View:662
What are the resonant antennas

While there are broadband traveling wave antennas such as the Beverage which do not work by resonance, the vast majority of antennas are based on the monopole or dipole antenna which function as resonators. At a particular frequency, their resonant frequency, waves of current and voltage bouncing b

Posted on:12-01 View:1520
What are broadcasting systems of AM stereo

The Magnavox PMX, Harris Corporation V-CPM, and Motorola C-QUAM (Compatible—Quadrature Amplitude Modulation) were all based around modulating the phase and amplitude of the carrier, placing the stereo information in the phase modulated portion, while the standard mono (L+R) information is in the am

Posted on:11-30 View:1036

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