[BC] Collins 830E-1A Question...

[DHultsman5 at aol.com]

The final Tube in the Collins 830E-1, 5 kW. FM is the 4CX5000A.  The FInal 
tube of the 830F-1 is a
4CX5000A tube.   The driver for the 5 or 10 kW. is usually a 4CX-250B in the 
driver cabinet.  
 
In the case of the 830H or 830N,  20 kW. FM tranmsmitter the ouput amplifier 
consists of two 830F-1  10 kW Power Amplifiers in parallel/combined thru a 90 
dgree hybrid.  The finals would be 2 each 4CX-5000A tubes.
 
In the case of the 830H or 830N 20 kW. FM transmitters the Driver tube was 
the 4CX-1000-A tube.  Some of the 5 kW. Models were sold with a 1 kW driver 
instead of the 4CX-250B Drivers.
 
At this time the 4CX15,000A Power tetrode used in many 20 kW. rigs was not 
available.
 
Dave Hultsman
Continental Electronics 
 
In a message dated 9/2/2008 4:29:22 PM Central Daylight Time, 
monsterfm at monsterfm.com writes:

Can you please remind me as to what final tube is in the old Collins 830E-1A
(5kw.) amplifier?

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