[Elecraft] K3 - Filter suggestions for new builder

[Dale Boresz]

Hello Don,

Thanks for the quick response. I was just going through the K3 manual 
and KE7X's excellent book, but haven't seen any reference to that. For 
general ham radio operation I don't see it as a limitation, but it's a 
bit disappointing that the FM filters that will arrive tomorrow along 
with the 2nd RX, won't provide the capability I was hoping for.

73, Dale
WA8SRA

On 9/26/2012 7:23 PM, Don Wilhelm wrote:
> 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?
>>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>