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Re: [TenTec] TenTec] TX EQ = -14 dB for PSK31

To: "Discussion of Ten-Tec Equipment" <tentec@contesting.com>
Subject: Re: [TenTec] TenTec] TX EQ = -14 dB for PSK31
From: "Mike Brown" <k9mi@sbcglobal.net>
Reply-to: Discussion of Ten-Tec Equipment <tentec@contesting.com>
Date: Fri, 29 Dec 2006 20:38:54 -0000
List-post: <mailto:tentec@contesting.com>
Not that I own an Orion, but I have worked a fair amount of PSK31 and I've 
always made my adjustments with the mic gain. If you have a broad signal, 
you'll hear about it.

73, Mike K9MI


----- Original Message ----- 
From: <K4IA@aol.com>
To: <tentec@contesting.com>
Sent: Friday, December 29, 2006 20 06
Subject: Re: [TenTec] TenTec] TX EQ = -14 dB for PSK31


>I guess my use of the term "non-linearities" is a misnomer.  What  I meant 
>to
> describe was something like this:
>
> If I am operating SSB and I turn down the mic gain and transmit with the 
> mic
> gain too low, the audio doesn't sound "full."  It may be totally linear 
> but
> it is hard to understand and weak.  Isn't that the same thing as  turning 
> down
> the audio drive on PSK to reduce the final output to the desired 25  watts
> when the transmitter is set to put out  100w?    Wouldn't it give the same
> result, a thin  under-driven and hard-to-copy signal?
>
> The debate is whether it is better to:
>
> 1.  Set the transmitter at 100w and only supply enough audio to put  out 
> 25w,
> or
>
> 2.  Set the transmitter at 25w and use enough audio to drive it to the 
> full
> 25w or slightly under.
>
> The fact the Orion's ALC circuit and software are somewhat of a mystery 
> sure
> doesn't help answer the question.
>
> k4ia
>
>
>
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