[Amps] Real Difference

[Bill Coleman]

On Dec 23, 2005, at 12:17 PM, Jim Barron wrote:

> What is the Real difference  between
> Ameritron  AL-80A  and the  AL-80B
> are the better than cheaper   811H

The AL-80A and B are similar designs using a single 3-500Z. The  
AL-80A is an older, conventional design. The AL-80B is an updated  
design using a sophisticated bias arrangement and more easily mass- 
assembled circuitry.

Both these rigs generate about 600 or more watts out using the single  
tube.

The AL-811H uses four 811 tubes in a conventional design. It will  
generate about the same amount of output power.

Bill Coleman, AA4LR, PP-ASEL        Mail: aa4lr at arrl.net
Quote: "Not within a thousand years will man ever fly!"
             -- Wilbur Wright, 1901