Kim
My guess is that 20-30 watts out is all you will be able to get and have 
your signal remain linear.  Make sure you have zero ALC.

73,
Chuck AA5J

Kim wrote:
>
> I am using my new old Ten Tec 540 in digital mode. What I am finding
> is I am only able to get 20-30 watts out due to my sound card not
> providing enough gain in the audio (I get 100 watts in CW mode). I am
> using a manual ptt connection to the back of the radio.
>
> Will an SL-1 provide the umpf I need to get a better signal out? Or
> an interface from a different manufacturer?
> Thanks for your assistance.
>
> Kim AB7JK
>
> 

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