WHAV Transmitter Facilities

Raw video of WHAV's AM transmission facilities in the North Parish section of Haverhill, Massachusetts. The video focuses on three key pieces of equipment — Inovonics 235 audio processor, power supply meter panel and interface to the Rangemaster transmitter (Rangemaster not shown) and REA modulation monitor. The Inovonics 235 compresses, equalizes and limits the audio received via a 128kbps stream from the studios five miles away. Designed for AM broadcasting, it also creates an asymmetrical audio output favoring positive peaks without distortion and which legally adds power to the broadcast signal. The modulation monitor confirms the as-received signal and plays back the off-air audio. Note, especially when the second song begins, 100% negative peaks and positive peaks well in excess of 100%.

Category:

Education

Tags:

• transmitter
• AM
• radio
• low-power
• Part
• 15
• Haverhill
• WHAV
• LPAM
• Merrimack
• Valley
• Massachusetts