[TenTec] Ig drift on Titan 425

Jim Brown K9YC k9yc at audiosystemsgroup.com
Sat Feb 7 14:44:34 EST 2009

On Sat, 07 Feb 2009 14:20:04 -0500, Gary Smith wrote:

>I believe I have the opposite situation; In a key down state with 
>high output, the IG drifts downward. After a brief moment of no key 
>down, when I transmit, the Ig is so high that the meter will pin or 
>if not pin, the overdrive light is bright. At lower input/output, IE; 
>800W out, the drift is minimal.

Are you using AGC to control the drive level?  You should NOT do that. 
Ten Tec makes a point of this in their manual. ALWAYS set the drive 
level using the power output control of the transceiver that drives it. 
If you use ALC, use it ONLY as fall-back protection in the event that 
something goes wrong. 


Jim K9YC

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