[BC] When did GE die? RCA, Westinghouse, Collins Western Electric.

[DHultsman5@aol.com]

In a message dated 6/2/2006 2:32:14 AM Central Standard Time,  
dynotherm at earthlink.net writes:

Like all  boxes of
that era, they were built like tanks. Each PA served as driver for  the next
larger size - 250W - 3 kW - 10 kW - 50 kW TPO. All outputs and  inputs were
coaxial at 51.5 ohms. I don't know if they manufactured the 50  kW design,
but I saw everything from 10W (yes they had a 10 W NCE box which  was the
exciter with a PA stage added) through 10 kW. One station where I  worked


********************************
 
Collins also had brochures up to 50 kW. FM  all just add on  amplifiers.  As 
I recall the only company to make the 50 kW. FM was  RCA,  which sold one to 
WBRC-FM in Birmingham that had 500,000 Watts  ERP  using the RCA transmitter 
and a horizontal FM Antenna atop Red  Mountain.   I have heard they, RCA sold 
four of these  transmitters.
 
The later high power FM transmitters were the famous RCA "ring  amplifiers"  
from low-band TV consisting of seven RCA 5762 triodes in  parallel.  I believe 
these were used at the Fetzer 500 kW. stations in  Michigan.
 
Does anyone have an recollection of the type of transmitter used with the  
300 kW. transmitter at the old WILL-FM in Champain-Urbana,  IL????  I  know the 
university dropped the ERP when they replaced the old  transmitter.
 
 
Dave