500KW Transmitter Schematic


Posted on Sep 8, 2012

The transmitter was designed with redundancy and cutback (reduced power mode) in mind, giving the transmitter more continuity of service. The final amplifier was divided into 3 separate modules, each using four RCA type UV-898 tubes in push-pull parallel making up a total of 12 output tubes. The outputs of the three modules were combined in series in such a way, that if one of the 3 RF modules failed, the transmitter could continue to operate using the other modules. This idea was a very important step in transmitter design as modern solid-state transmitters are designed entirely in this a modular fashion as is described in my WABC Digital AM Transmitter Page Digital Modulation Section. Modern transmitter with modular design are composed, typically of 1KW modules with lower power modules used for shallow slopes of modulation.


500KW Transmitter Schematic
Click here to download the full size of the above Circuit.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Adjustable Regulator
Low-Consumption Monostable Relay
Triangle-Wave Generator Circuit
Circuit Detector and Disconnecting Over Voltage Schematic
22 Watts Mini Subwoofer Circuit TDA1516 with Adjustable Frequency
Battery-Charging Indicator For Mains Adaptor
oscillator HEF4060B counter doesnt count
a single transistor smart battery charger
Amp Monoblock UL
555 Timer as Monostable Multivibrator
RC (Remote Control) Switch



Top