[Elecraft] KIO3B Audio Spec

[ab2tc]

Hi,

Here is the spectrum out of the USB codec with a -73dBm carrier from the
XG3:

http://ab2tc.com/new_k3s_usb.png

The K3S setting is USB with a passband of 300 to 2400Hz. I left the LINE OUT
level set to the factory setting (10), and set the recording level with the
Windows mixer (Win7).

AB2TC - Knut


Joe Subich, W4TV-4 wrote
>>  Without published specs for dynamic range, SNR, etc. we
>  > don't have a means of assessing this.
> 
> The CODEC used in the KIO3B is from the same family as used by most of
> the amateur USB sound card products (including microHAM USB Interface
> III).  Unless the designer cuts corners (like the designer of the
> Signalink USB) by eliminating critical power supply bypassing and
> regulators, performance of all devices using the same family of USB
> Audio CODECS will be very similar based on the limits of the 16 bit
> ADC, the noise figure of any audio preamplifiers used by the designer
> and the power supply noise rejection (does the design properly keep
> digital noise out of the power supply for the analog circuits?).
> 
> I have not tested the KIO3B but I certainly would not expect that Wayne
> cut any corners in the design.  Thus performance of the KIO3B and
> microHAM USB Interface III (noise floor, dynamic range, etc.) should
> be nearly identical - within unit to unit manufacturing tolerances.
> 
> 73,
> 
>    ... Joe, W4TV
> <snip>





--
View this message in context: http://elecraft.365791.n2.nabble.com/K3IOB-tp7611605p7612091.html
Sent from the Elecraft mailing list archive at Nabble.com.