[Elecraft] K3 : AM synchronous detection

David Pratt david at g4dmp.co.uk
Sat Jan 12 11:27:53 EST 2008


In a recent message, Lyle Johnson <kk7p at wavecable.com> wrote ...
>> I wonder if there is a list available of the K3 features that are NOT 
>>yet activated in the current firmware.
>
>Check the errata sheet that came with the radio.  As features are 
>added, they'll be listed in the firmware updates, viewable through the 
>K3 Utility.

Many thanks, Lyle, but no mention of any missing features in the Errata 
sheet that I got with my kit. (Rev. C-3, November 26, 2007)

>> ...I am unable to enable synchronous detection in AM mode.
>
>Not yet available.  You can use USB or LSB and FINE tuning for the 
>moment, as the K3 is very stable and most AM transmissions are as well.

Thanks again. Yes, AM medium wave broadcast (even music) sounds good in 
USB/LSB modes.

>> ...The bandwidth control only goes up to 3kHz on AM, but goes  up to 
>>6kHz on other modes. Is this normal...
>
>WIDTH refers to the fianl audio bandwidth.  IF is 1:1 to the IF 
>bandwidth in CW, SSB and DATA modes.  AM IF bandwidth is twice the 
>audio bandwidth.  FM will have a fixed IF bandwidth, at least 
>initially, and WIDTH will refer to the AF response only.

Excellent - that confirms #00186 is working okay.

73
-- 
David G4DMP
Leeds, England, UK
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