[AMPS] Heavy Iron: 10-4 Good Buddy

[Tom Rauch]

> Show me where in my post I stated that the INTENT was to run "illegal"
> power? The INTENT was to run four 3-500Zs since I happen to have many
> spares on hand in AM service with much overhead to spare. Four 3-500Zs at
> 1500 watts out peak envelope power is only 375 watts per tube.  Carrier
> power is 375 watts which is less than 100 watts per tube continous. All
> this adds up to an economical amp that will last a lifetime due to the
> conservative design. 

3-500Z's have the gettering agent coated on the anode, and it is 
activated by heat. Gettering requires a slightly red glow or brighter 
on the anode.

RCA used a 4-400 in a driver of a BC transmitter, and they had 
constant gassing failures. They had to change to a 4-125 to get 
rated life.





73, Tom W8JI
w8ji@contesting.com

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