|Do you remember?
In 1972, American Electronics Laboratories, based in
Lansdale, PA, advertised the new FM-12KD and FM-25KD (12kW and 25kW) FM
transmitters. These transmitters boasted a two-tube design with a
grounded grid final amplifier (3CX15000) and tetrode driver stage
(4CX1000K), automatic filament voltage control, automatic power
control, solid-state control circuitry, a solid-state exciter and power
supplies, and VSWR protection.
The transmitter was unveiled at the 1972 NAB
That was then
Louisville, KY, signed on July 18, 1922. Like most early stations, it
changed frequency assignments several times, finally staying on 840. By
1932, the station was licensed for 25kW operation. In 1933, the power
was increased to 50kW. In 1938, the station owners built a new
transmitter site in Eastwood, KY.
The photo shows the transmitter room as it looked about the time
when it was built. On the left is the Western Electric WHAS
transmitter. On the right is the FM transmitter for what would become
WHAS-FM. This transmitter was likely the experimental station for W9XEK
at 45.5MHz. In the middle is the console for the Western Electric
transmitter. WHAS, which was co-owned with Courier-Journal newspaper,
experimented with transmitting an early facsimile system that would
transmit the data to receiver-printers in people's homes. This
transmitter, licensed as W9XWT, was behind the FM transmitter.
Hanging above the WHAS transmitter are the licenses of all the
engineers of the station.
WHAS photos and information provided by Scott Cason. See moreat
Do you have information and pictures of a station from radio's
Tell us about it for an upcoming installment.
Sample and Hold
A look at the technology shaping radio
Internet radio listening continued to rise in 2001.
* the 10-week base period is an average of the weekly total time
spent listening from October 30, 2000 through January 7, 2001.
** Index values are for an entire week ending on the date listed
Source: MeasureCast Internet Radio Listening Index 2001