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Do you remember?
Advertised in 1981, the MAP II Multiband Audio Processor from Inovonics offered users eight-band compression. Each band had its own compression and equalization controls to tailor the sound while maintaining high program density. The compressor would change gain in response to inputs to its own and adjacent bands.
The processor featured inaudible phase optimization, which meant the program phase was silently rotated rather than instantaneously switched to maintain positive modulation.
The processor's peak controller combined a hard clipper with a low-distortion peak limiter. For stations with remote transmitters, the peak controller could be unplugged and installed at the transmitter site.
That was then
This picture is from the cover of the November 1979 issue of Broadcast Engineering. The station, WBNO-AM of Bryan, OH, worked with MIT Lincoln Laboratory and the Department of Energy to install the 800-module solar array in the foreground. The 33,600 photovoltaic cells could produce as much as 15kW of peak power for the station. The solar array occupied ⅓ of an acre of land.
To read the original article on WBNO from 1979, click this link.
Sample and Hold
Online listening at work: Most companies allow unrestricted listening to radio online.
Source: RRadio Network, "Survey 22"-2,025 respondents, Feb. to March 2004.
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The history of radio broadcasting extends beyond the work of a few famous inventors.
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- Franken FM Stations
- Wi-Fi on Wheels: The Connected Car
- Field Report: Yamaha MG10XU
- Transmitter Site Cleanup