[Angus McInnes] has been working on AM radio transmission techniques. He tried out a method of using a VGA port for the task but found the vertical blanking was audible. His latest experiments use a ...

The chances are that many of you will have made an FM “bug” style transmitter, a simple one-transistor oscillator usually driven by a small electret microphone. It’s also relatively straightforward to ...

My first thought when I heard we were going to replace our 16-year-old Nautel ND50 transmitter with a Nautel NX50 was, “Where are we going to put it?” Our site at AM 670 KLTT was out of room. We had a ...

This transmitter is basic but allows transmission of audio to an AM radio. It consists of an RF oscillator operating in the AM broadcast band, together with a modulator stage, which mixes the incoming ...

This low-cost AM transmitter is tunable from 10 to 15 MHz with the help of ½J gang condenser VC1, which determines the carrier frequency of the amplitude modulation transmitter in conjunction with ...

THE YEAR WAS 1906. On Christmas Eve of that year, Canadian inventor Reginald Fessenden carried out the first amplitude modulation (AM) radio broadcast of voice and music. He used a high-speed ...

1030 WGSF(AM), the longest-running Spanish-language radio station in Memphis, is working to rebuild its transmitter site after it was ransacked in a May copper theft. The station, owned by Butron ...

BAINBRIDGE ISLAND – A Washington-based subsidiary of Salem Media Group plans to add a new AM radio transmitter to its broadcasting site near Murden Cove and a residential neighborhood on Bainbridge ...