New 3.41 IMPROVED RX LOW-FREQUENCY RESPONSE in AM/SSB/CW MODES

Posted by mark roz on Oct 07, 2009; 11:14pm
URL: http://elecraft.85.s1.nabble.com/New-3-41-IMPROVED-RX-LOW-FREQUENCY-RESPONSE-in-AM-SSB-CW-MODES-tp3785023.html

To me there is no difference between 3.30 and 3.41. Same low freq. response.
However, for my needs it is OK. Yes, I'm adjusting shift and width.
 
There is one problem with the new 3.41- the DSP high pitch noise level is higher (3dB or so) than with 3.30.
Condition: RF gain at 12 o'clock    AF set for normal listening level with good headphones.
Antenna switch is being used to ground the antenna. Listen  to the band noise on 20 or 17m and ground the antenna. Now compare internal DSP noise to band noise by using antenna switch
Do the above with 3.30 and than 3.41. My K3  SN is above 3000.
I like 3.30  and I'm hoping that DSP gain distribution/noise level in future firmware will be the same as in 3.30.
There is also difference in DSP gain between 3.30 and 3.41.   
 
 


     
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