Fred,

I'm new to the amp game.  As Steve and John both said, ALC will prevent 
overdriving but  may not be needed if the input is set properly.  My amp's 
manual bears this out as it says that ALC may not be needed if drive  power 
and mic gain are set properly  at the transceiver.

You asked how ALC adjustments are made.  Again, according to  the THP 
manual:  With the proper ALC connections made between rig and amp, and the 
rig set properly, transmit full output power from the amp into a dummy load. 
Slowly turn the ALC adjustment knob on the amp until output power just 
starts to drop off.  Stop at that point or continue turning the knob to 
further limit output power.

73, Steve KW3A



----- Original Message ----- 
From: "Fred Adams" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, April 11, 2008 5:04 PM
Subject: Using automatic load control


>  Do any of you guys that run amplifiers use the ALC and if so how do you
> make ALC adjustments? I have never used the ALC as I didn't know how to 
> make
> the adjustments. I would appreciate any info. on this.
>
> Best wishes,
>
>
> FRED ADAMS W4HC
> FIGHT TRUTH DECAY
>
>
>