Don, K4KYV, sez: > Continental Electronics, a long time manufacturer of > broadcast transmitters, never offered a plate modulated > product. Their advertisements always pointed out that > from a BC station's vantage point, low level and high > level modulated (tube type) transmitters are about > equally economical to operate in terms of the electric > bill for running the transmitter.
Yeah, but their linear amplifiers were Doherty types that achieved high carrier-level efficiency by use of a relatively complex two-tube (carrier and peak) scheme. They used that method to get up to the 1 Megawatt level for BC transmitters. However, once PWM became widely accepted, they adopted that for most of their transmitter line. > Actually if you want to build a high power high level > homebrew transmitter, there is no need to spend megabucks > to purchase a custom built mod transformer. There are > plenty of tube type broadcast transmitters sitting > around all over the country that have been removed from > service.... Will it fit on my desktop and weigh less than 100 lbs? :-) Jim, K7JEB Glendale, AZ
