[hpsdr] Interesting email on SDR transmit noise

[Jim Sanford]

WOW!
Has anybody made similar measurements on Penny/Munim??

73,
Jim
wb4gcs at amsat.org

On 10/18/2013 11:42 PM, KA5FPT Paul wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> I saw the following on the Flexradio mail list. I am having some 
> problems understanding how a SDR transmitter can cause wide band 
> noise. I would have thought that with proper filtering it would be 
> controlled.
> ----------------------------------------------------------------------------------------------- 
>
>
> Date: Wed, 16 Oct 2013 14:59:37 -0400
> From: "Gedas"<w8bya at mchsi.com>
> To:<flexradio at flex-radio.biz>
> Subject: [Flexradio] Noise Sidebands, Article by SM5BSZ
> Message-ID: <399ADD464530473F88C1CBF0659768F5 at biggy>
> Content-Type: text/plain;    charset="utf-8"
>
> I came across this interesting article by SM5BSZ who discusses some 
> possible transmitter issues with many radios, including the Flex.  It 
> has me a bit concerned.  I am wondering if anyone has seen similar 
> data for the Flex 5000? The article may be found here:
>
> http://www.sm5bsz.com/dynrange/dubus313.pdf
>
> Gedas, W8BYA
> Gallery athttp://w8bya.com
> Light travels faster than sound....
> This is why some people appear bright until you hear them speak.
>
> -------------------------------------------------------------------------------------------------- 
>
>
> 73,
> Paul Cecil
> KA5FPT
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