[Elecraft] fldigi KX3 question

[Tim Henrion]

> On Mar 28, 2016, at 7:46 PM, Don Wilhelm <w3fpr at embarqmail.com> wrote:
> 
> Note that the default bandwidth for DATA A and AFSK A data submodes is narrow on the KX3. 

Another one for the ‘Feature Request’ list. The “audio” data submode bandwidths are way too narrow out of the box. Does anyone have any idea why this is? I’m not sure I see much of a reason for any audio filtering at all other than the traditional 3K roofing filter. The downstream PC is going to do its own audio filtering at the DSP level before decoding the data anyway.

For the OP: If you like to tweak hardware, there are a number of performance improvements that can be made to the SignaLink USB hardware. Out of the box, its got a pretty high noise floor and is susceptible to noise on the USB +5 line, which directly feeds the onboard amp bias network without NO filtering. http://www.frenning.dk/OZ1PIF_HOMEPAGE/SignaLinkUSB-mods.html is a good place to start if you’re interested in better performance from your SignaLink.

Tim Henrion
KC1EOQ