[Elecraft] K3 - Filter suggestions for new builder

[Don Wilhelm]

Sorry, but yes, the K3 audio is limited at 4 kHz, no matter whether it 
is to the headphones or to the speaker.  Please do not "shoot the 
messenger". but that information is in the archives of this reflector in 
several places - it has been discussed periodically.

If you want to lobby for extended audio response, that is fine, but I am 
just saying what the limits are today.  Whether those can be extended or 
not is for the DSP designer to answer.

73,
Don W3FPR

On 9/26/2012 7:11 PM, Dale Boresz wrote:
> On 9/26/2012 1:35 PM, Edward R Cole wrote:
>> ...  But I learned that audio is limited to 4-KHz
>> regardless of IF filter so I ended up selling the extra 13-KHz filter.
>>
>> ...
>>
>> 73, Ed - KL7UW
> I really hope that this does not apply to received audio to the
> headphones or loudspeaker!   I just purchased two FM filters (one for
> sub-receiver to monitor wide splits) specifically to open up the receive
> passband (audio included) for SWL and BCB reception. I have no intention
> of actually transmitting FM or AM for that matter -- just want the wider
> audio bandwidth for receive.
>
> So... is the received audio bandwidth *really* limited to 4 KHz?
>