George, Many laptops do not have a good quality built-in sound cards. Their performance for very weak signals typically is not as good as using an external sound card. You might want to test your internal PC sound card before you go to Brazil. If your internal sound card is able to consistently decode JT65 signals at levels below -19dB (for example -20 to -26 dB) it is probably acceptable.
You might wish to review Jim Brown’s (K9YC) Tutorial on sound cards: http://k9yc.com/USB_Interfaces.pdf 73, Bob Nobis - N7RJN [email protected] > On Apr 10, 2016, at 11:09, George_yv5wz <[email protected]> wrote: > > Thank you Don! > > So you mean I don't need to buy anything just my laptop....that's > interesting! > > however, I'm kind of confuse....why so many brands of expensive interface > sound card....does it represent any better signal or any using interface > ?....I mean 100 Box (signlink) against simple USB soundcard (12 box) > .....does it really matter? > > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/What-s-best-Soundcard-Interface-for-KX3-tp7616157p7616162.html > Sent from the Elecraft mailing list archive at Nabble.com. > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
