You can click on the image to jump to data from my weather station at Weather Underground. Or, you can click here for 24 hour data uploaded directly to my Clifton Laboratories web site.

At the suggestion of Geoff, GM4ESD, I've added measurements of two headphones taken in stereo mode, i.e., one transducer, not both in parallel, in free space (headphone cups aimed outward) and on a simulated head (two thick paper catalogs). I've added the data at the Headphone Impedance page.

I've added a new page Headphone Impedance with measured impedance data over the range 20 Hz - 6000 Hz for several headphones and loudspeakers.
 

I've added LIN OUT plots for LIN OUT gain settings of 2 and 5 to the Elecraft K3 Receive Audio page. I also added (at 4 PM EDT) two spectrum analyzer plots showing how the LIN OUT picks up much different 60 Hz hum levels depending on the K3's orientation.

I've made additional measurements of audio distortion in my K3, with single and dual tones within the SSB passband. The new data is at the end of my Elecraft K3 Receive Audio page.

As is my practice, I've moved the August 2008 updates to an archive page, readable by clicking here or via the links at the top of this page.