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#1
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βish wrote:
Was wondering if it is safe to listen to Shortwave radio without terribly long external antenna during such time. I actually like the crackle pops along with the fading audio. Would I damage the radio by doing this? Radio is Sony 2010 with about 10 ft. long antenna slung near the window. TIA Would you be injured? No. Your radio? Not likely. But that's not assured. You don't have to be directly struck to damage you radio. A nearby strike can easily raise electric potential in the surrounding area sufficiently to induce a current into metal objects, your antenna being one of them. 2010 is particularly susceptible to static damage, but it's by far not the only item that's vulnerable. A few years ago, during a particularly spirited discussion on the group, I had my radios on during a rather mild and not terribly close thunderstorm. Now, I run have an active splitter feeding my radios from common antennae. And that night the Eavesdropper was switched in, and I had 4 radios going. At one point, there was a fairly distant flash of lightning out the window, but no thunder. And there was a pop on all of the active radios. And then silence. The static strike had induced a current spike in the antenna, and taken out the active splitter. The radios, themselves, were not damaged, but the active splitter was demised. For the most part, there's no reason to be concerned about listening in a thunderstorm. And an indoor antenna will rarely, if ever, pose a problem under such conditions. But be advised that some electronics are sensitive to nearby static strikes, and can be taken out without direct contact. Good listening. |
#2
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![]() βish wrote: Was wondering if it is safe to listen to Shortwave radio without terribly long external antenna during such time. I actually like the crackle pops along with the fading audio. Would I damage the radio by doing this? Radio is Sony 2010 with about 10 ft. long antenna slung near the window. TIA D Peter Maus wrote: Would you be injured? No. Your radio? Not likely. But that's not assured. You don't have to be directly struck to damage you radio. A nearby strike can easily raise electric potential in the surrounding area sufficiently to induce a current into metal objects, your antenna being one of them. 2010 is particularly susceptible to static damage, For the most part, there's no reason to be concerned about listening in a thunderstorm. And an indoor antenna will rarely, if ever, pose a problem under such conditions. Yes, the 2010 IS particularly sensitive to ESD (electrostatic discharge) and even though an antenna is indoors, voltage CAN be induced into it from nearby storms. Try this experiment. Take an NE-2 neon bulb; connect one lead of the bulb to your indoor antenna. Connect the other lead to any convenient ground. Wait for a nearby thunderstorm (2-4 miles away). Please note how many times the bulb flashes. The NE-2 lights at about 60 volts. Your 2010 may not like this. Even though the antenna is "indoors", this experiment will clearly demonstrate that a significant voltage can be induced into even an indoor antenna. So, it all comes down to "How lucky do you feel?" and how much you value the 2010. |
#3
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On Jun 4, 11:36 am, Tommy Tootles wrote:
ish wrote: Was wondering if it is safe to listen to Shortwave radio without terribly long external antenna during such time. I actually like the crackle pops along with the fading audio. Would I damage the radio by doing this? Radio is Sony 2010 with about 10 ft. long antenna slung near the window. TIA D Peter Maus wrote: Would you be injured? No. Your radio? Not likely. But that's not assured. You don't have to be directly struck to damage you radio. A nearby strike can easily raise electric potential in the surrounding area sufficiently to induce a current into metal objects, your antenna being one of them. 2010 is particularly susceptible to static damage, For the most part, there's no reason to be concerned about listening in a thunderstorm. And an indoor antenna will rarely, if ever, pose a problem under such conditions. Yes, the 2010 IS particularly sensitive to ESD (electrostatic discharge) and even though an antenna is indoors, voltage CAN be induced into it from nearby storms. Try this experiment. Take an NE-2 neon bulb; connect one lead of the bulb to your indoor antenna. Connect the other lead to any convenient ground. Wait for a nearby thunderstorm (2-4 miles away). Please note how many times the bulb flashes. The NE-2 lights at about 60 volts. Your 2010 may not like this. Even though the antenna is "indoors", this experiment will clearly demonstrate that a significant voltage can be induced into even an indoor antenna. So, it all comes down to "How lucky do you feel?" and how much you value the 2010.- Hide quoted text - - Show quoted text - TT, Actually, what Clint Eastwood says in Dirty Harry (1971) is not "Do You Feel Lucky ?" - - - The correct line is : "You've Got To Ask Yourself One Question : 'Do I Feel Lucky ?' Well, Do Ya Punk ?" IMHO - It is better to "Trust-in-Safe-Operating-Practices" -vice- 'Take-a-Chance-on-Luck' ~ RHF READ - The Choices and Consequences of Lightning Protection for a Shortwave Radio Listening (SWL) Station {Shack} http://members.cox.net/pc-usa/station/ground0.htm -by- Jack Painter [Creating Your Own Ground Zero ] Shortwave Listener's (SWL) Antenna Group Message 13576 http://groups.yahoo.com/group/Shortw.../message/13576 * Prelude - Some Common Questions and Misconceptions about Thunder & Lightning . . . http://members.cox.net/pc-usa/station/ground2.htm * The Forces and Affects of Lightning http://members.cox.net/pc-usa/station/basics.htm Question - How Deadly Is Your Shack's Ground ? * Aspects of the Destructive Energy of Lightning http://members.cox.net/pc-usa/station/aspects.htm Direct - Near -and- Far Lightning Hits Can Affect You * Question - What Keeps Lightning from Destroying Stuff ? http://members.cox.net/pc-usa/station/ground3.htm Common Bonding: Rule #1 for Successful Grounding * External Grounds: a better place for Lightning ! http://members.cox.net/pc-usa/station/ground4.htm * Inductance {EMF} - Why Grounding Is Never Enough http://members.cox.net/pc-usa/station/inductance.htm * Conclusions, Sample Equipment, Links, and Credits http://members.cox.net/pc-usa/station/ground5.htm * * Schematics of the "Oceana" Radio Station Grounding http://members.cox.net/pc-usa/station/schematic.htm so - have you built your radio shack from . . . 'the ground' up ? ? ? - iane ~ RHF {pomkia} . Shortwave Listener (SWL) Antennas Group = http://tinyurl.com/ogvcf GoTo = http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ The SWL Antenna Discussion Group = http://tinyurl.com/ogvcf Shortwave Listener (SWL) Antenna HELP = http://tinyurl.com/ogvcf Shortwave Listener (SWL) Antenna NEWS = http://tinyurl.com/ogvcf Shortwave Listener (SWL) Antenna INFO = http://tinyurl.com/ogvcf * * * All Are Welcome : Including ELMERS and 'Want-to-be-Elmers' plus plain old "Mister-Know-It-Alls"; and even those Newbees with "I Know This Is A Really Dumb Question - But _ _ _ _ _ _ _ _ " . The Shortwave Listener's Blessing : SWL BLESSING = http://tinyurl.com/s2bjm May You Never Tire of Listening to the Radio and Always have Strong Signals and Noise Free Reception ~ RHF {ibid} http://groups.yahoo.com/group/Shortw...a/message/9233 . Tous Sont Bienvenus ! - - - Groupe par Radio d'auditeur d'onde courte pour des Antennes de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Alle Sind Willkommen ! - - - Shortwave Radiozuhörer Gruppe für SWL Antennen http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Tutti Sono Benvenuti ! - - - Gruppo Radiofonico dell'ascoltatore di onda corta per le Antenne di SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . Todos São Bem-vindos ! - - - Grupo de Rádio do ouvinte do Shortwave para Antenas de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . ! - - - Radio A SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . ¡Todos Son Agradables! - - - Grupo de Radio del oyente de la onda corta para las Antenas de SWL http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . = = = = Plain Old American-English Translation = = = = All are Welcome - - - To Join the Shortwave Listeners (SWL) Antenna Group on YAHOO ! http://groups.yahoo.com/group/Shortwave-SWL-Antenna/ . | | | / \ ........!....... |
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