[Elecraft] Is there a reason the receive is so Skinny

Wes (N7WS) wes at triconet.org
Mon Apr 28 13:56:05 EDT 2014


Of course it is.

If you would understand that SSB is simply audio mixed up to R-F, you would not 
have this mistaken idea.  We normally do it in two steps, audio to I-F, I-F to 
R-F, but that's all it is, a frequency conversion.

Certainly, if you take a 2 KHz band of audio frequencies and run the result of 
the first frequency conversion through a 1 KHz filter, you will band limit the 
result.  However, if you run the same product through a 10 KHz IF filter, you 
will still get a 2 KHz wide result.  The wide filter isn't going to magically 
widen the transmitted signal.

Wes  N7WS

  On 4/27/2014 7:07 PM, XE3/K5ENS via Elecraft wrote:
> Joe,
>
> You of all people should know it's not the same as actually narrowing the
> IF.
> You should try both and compare.
>
> Keith
>
>



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