tag:blogger.com,1999:blog-7590176649168185428.post6801292784150017604..comments2024-03-28T08:01:27.111-04:00Comments on SolderSmoke Daily News: "El Silbo": Michael Rainey's Amazing Voice-Powered DSB TransmitterBill Mearahttp://www.blogger.com/profile/07662500663603350847noreply@blogger.comBlogger5125tag:blogger.com,1999:blog-7590176649168185428.post-73158309847085385162017-03-28T14:54:00.884-04:002017-03-28T14:54:00.884-04:00Reflected light beam was a form of optical communi...Reflected light beam was a form of optical communication in the late 19th and early 20th century. It used no electrical power. Its power came from the sun. It was called heliograph or reflected light beam to a distant observer. Its communication was in the way of Morse code. Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-68365866595590684282016-07-14T03:08:38.208-04:002016-07-14T03:08:38.208-04:00No, soundpowered phones would not generate as much...No, soundpowered phones would not generate as much power. Also consider the diameter of the speaker cone as gathering audio power. Hue Millerhttps://www.blogger.com/profile/14984577842094336181noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-89309887127796584602013-11-26T11:45:52.214-05:002013-11-26T11:45:52.214-05:00Nice project! Definitely something to bookmark and...Nice project! Definitely something to bookmark and look at later.<br />73 <br />Chris, AB1TJAnonymoushttps://www.blogger.com/profile/05114063732986855872noreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-84051718061144444762009-10-25T09:45:15.883-04:002009-10-25T09:45:15.883-04:00I wonder if incorporating technology deliberately ...I wonder if incorporating technology deliberately designed to generate an electrical field without outside power source would be more powerful. Specifically the mics from WWII era sound powered phone systems "Decktalkers", "Big Cans" currently used on board Navy ships were designed to be non-dependent on electrical supply other than what was generated by voice.<br />These balanced armature designed phone systems are coveted by Xtl radio nuts because of their sensitivity. Some of the better systems were designed by RCA, USI, Western Electric and Automatic Electric. See http://www.crystalradio.net/soundpowered/index.shtml for background.<br />73, Gil NN4CWAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-7590176649168185428.post-15073417340111345942009-10-24T11:42:43.833-04:002009-10-24T11:42:43.833-04:00That's about the coolest thing I've seen i...That's about the coolest thing I've seen in a long time.<br /><br />Now that's VOX !Matthttp://www.qmap.comnoreply@blogger.com