Bell Ringers
Message and Picture Blog

See this article in IEEE Spectrum about the evolution to full-HD telephone audio. It contains some background about the current wired and wireless network designs that have hampered the implementation of better voice quality of the kind that many of us have experienced when using Skype or Google Voice between computers and smart phones. The coming full-HD audio will be even better. John WA5MLF

See this short article with links about the 807: http://spectrum.ieee.org/geek- life/history/the-807-a-vacuum- tube-for-the-ages John WA5MLF

Thanks to WA5MLF for a great find! Left click on the image below to visit the support.apple site.

Some of us have made good use of Mouse without Borders , a free software KVM switch product from Microsoft. Mouse without Borders is a product that makes you the captain of your computer fleet by allowing you to control up to four computers from a single mouse and keyboard. This means that with Mouse without Borders you can copy text or drag and drop files across computers. An updated version (10/1/2015) of the program is available at this web page . If your "free ranging mouse" has become erratic recently, you may like to install the new version, especially if you have upgraded to Windows 10. Be sure to install the same version on all computers. Alternatives to Mouse without Borders are listed in this article . Included are products that are cross-platform , so if you have a mixture of Windows, Mac OS X and/or Linux computers, you can choose one from this list. The best known is probably Synergy . Synergy combines your desktop devices together in to one c...

Here is a screen shot of the waterfall display I captured on Oct 15, showing the strong signal on 7195 kHz that produced some splatter above and below, including some effect on the RV Net on 7191. The vertical time scale of the display is 30 seconds. Color signifies the received signal strength -- red is strong (hot). I added the text 'splatter' to draw attention to the signal energy at frequencies above and below the station's intended transmit band. John WA5MLF Click on the image for a larger view.