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External Antenna with insulated wire?
On May 21, 1:38 am, Telamon
wrote: In article om, RedPenguin wrote: On May 20, 10:25 pm, Telamon wrote: In article . com, RedPenguin wrote: On May 20, 7:13 pm, Telamon wrote: In article . com, RedPenguin wrote: I have a fairly large amount of insulated copper wire, that is solid. My Sony ICF-7600GR, has an external antenna jack that is just basically a headphone jack with it's connector. Isn't it possibly just to put this insulated wire on a 1/8 jack and make fairly ok antenna? Yes but it needs to be a mono jack with two conductors tip and barrel. Connect the wire to the jack tip for a single wire antenna. I guess you can't just use any end, I used one from an old pair of headphones that broke for the heck of it to test and it barely got any signal in. Am I wrong about using copper wire like this? If you want something better use two wires, one to the barrel and the other to the tip. Stretch the wires in opposite directions and you have a dipole. Make sure they don't short to each other inside the jack. If it ever gets a short, it will not damage the radio, at least permanently right? I mean since it's not like electricity going through or something, right? The jack is meant to power a small external antenna amplifier that Sony sells so don't short the two contacts in the jack. Though, will it ever damage the radio? That I don't know. -- Telamon Ventura, California Isn't it true that if there is noise, that a better antenna will only make it worse? Odd thing I have been noticing with the dipole antenna is, on 6000/6180 RHC, I can hear the music and news fairly clearer then the whip all the way up and a fair amount louder but on a local MW station, that always seems to come in clear on any AM radio, actually seems to get quieter and appears to have more noise to it. Also, do I need to worry about the length of the wires? I read a couple websites on dipoles and they say it's to be 1/4 of the wavelength that you want for the meter band, but I don't want a specific meter band, I want to do just general SW listening, and I have stations all over the place. |
External Antenna with insulated wire?
On May 20, 2:36*pm, RedPenguin wrote:
I have a fairly large amount of insulated copper wire, that is solid. My Sony ICF-7600GR, has an external antenna jack that is just basically a headphone jack with it's connector. Isn't it possibly just to put this insulated wire on a 1/8 jack and make fairly ok antenna? I guess you can't just use any end, I used one from an old pair of headphones that broke for the heck of it to test and it barely got any signal in. Am I wrong about using copper wire like this? RedPenguin, Longwire {Random Wire} to a Sony ICF-SW7600GR Radio's {Input} External Antenna 1/8" Mono-Plug Use a 1/8" Mono Phone Plug RadioShack Catalog # 274-286 http://www.radioshack.com/product/in...ductId=2062452 Wire the Plug with the : * Rear Barrel is for the Ground Wire * Front Tip is for the Antenna Wire Or use the "TVJT300" Mini-TV Antenna Adapter on this webpage to change 300 Ohm Longwire Antenna Input to a 75 Ohm 1/8" Phone Plug. http://buyreliant.com/pfan/splitters...hes_baluns.htm Ground Wire to one Terminal and Antenna Wire to the other Terminal - - - No Soldering Required and the Plus the Matching Transformer will help with Static Discharge build-up from 'outside' Longwire Antennas. hope this helps - 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/ . Все *адушны ! - - - Группа оператора на приеме коротковолнового диапазона Radio для Aнтенн 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/ . | | | / \ ........!....... |
External Antenna with insulated wire?
On May 20, 7:23 pm, Telamon
wrote: In article .com, RedPenguin wrote: On May 20, 7:13 pm, Telamon wrote: In article . com, RedPenguin wrote: I have a fairly large amount of insulated copper wire, that is solid. My Sony ICF-7600GR, has an external antenna jack that is just basically a headphone jack with it's connector. Isn't it possibly just to put this insulated wire on a 1/8 jack and make fairly ok antenna? Yes but it needs to be a mono jack with two conductors tip and barrel. Connect the wire to the jack tip for a single wire antenna. I guess you can't just use any end, I used one from an old pair of headphones that broke for the heck of it to test and it barely got any signal in. Am I wrong about using copper wire like this? If you want something better use two wires, one to the barrel and the other to the tip. Stretch the wires in opposite directions and you have a dipole. Make sure they don't short to each other inside the jack. Can you just buy those ends anywhere? I never heard of a tip and barrel, but I guess I can maybe find them at Radio Shack. I have given you the wrong idea. The tip and barrel are descriptors of the same plug. The stereo head phone jack you used is a barrel contact, a ring, then a tip. Examine the stereo headphone jack you have and you will see that there are three contacts (metal areas) separated by two insulators. You only need two contacts, a tip and barrel. The plug you need will be the same size but only have the two contacts missing the small ring contact. The antenna jack is meant to power a small external antenna that Sony sells so you do not want to short the two contacts of the jack. Use insulated wire. -- Telamon Ventura, California- Hide quoted text - - Show quoted text - Telamon, FWIW - The Sony AN-LP1 Active Shortwave Loop Antenna requires it's own built-in {Set-of-Batteries} Battery Power to Opperate. The Sony ICF-SW7600GR Radio simply supplies a small 'sensing' Voltage to only "Switch" the AN-LP1 On-and-Off; and nothing more. NOTE - This Switching {On-and-Off} Voltage from the Radio does NOT Supply the needed Power to actually Power the Sony AN-LP1 Active Shortwave Loop Antenna. The Sony ICF-SW7600GR Radio has built-in 'protection' for this small Switching Voltage : When a normal 1/8" Mono Phone Plug is used with an Antenna Wire and Ground Wire. http://www.universal-radio.com/catal...able/0360.html The Sony ICF-SW7600GR Radio can be run on (via) an AC-to-DC Adapter {Wall Wart} while the Sony AN-LP1 Active Shortwave Loop Antenna can be Powered with (via) Two (2) "AA" Batteries = 3 VDC. http://www.universal-radio.com/catalog/sw_ant/3676.html hope this helps - iane ~ RHF |
External Antenna with insulated wire?
In article . com,
RHF wrote: On May 20, 7:23 pm, Telamon wrote: In article .com, RedPenguin wrote: On May 20, 7:13 pm, Telamon wrote: In article . com, RedPenguin wrote: I have a fairly large amount of insulated copper wire, that is solid. My Sony ICF-7600GR, has an external antenna jack that is just basically a headphone jack with it's connector. Isn't it possibly just to put this insulated wire on a 1/8 jack and make fairly ok antenna? Yes but it needs to be a mono jack with two conductors tip and barrel. Connect the wire to the jack tip for a single wire antenna. I guess you can't just use any end, I used one from an old pair of headphones that broke for the heck of it to test and it barely got any signal in. Am I wrong about using copper wire like this? If you want something better use two wires, one to the barrel and the other to the tip. Stretch the wires in opposite directions and you have a dipole. Make sure they don't short to each other inside the jack. Can you just buy those ends anywhere? I never heard of a tip and barrel, but I guess I can maybe find them at Radio Shack. I have given you the wrong idea. The tip and barrel are descriptors of the same plug. The stereo head phone jack you used is a barrel contact, a ring, then a tip. Examine the stereo headphone jack you have and you will see that there are three contacts (metal areas) separated by two insulators. You only need two contacts, a tip and barrel. The plug you need will be the same size but only have the two contacts missing the small ring contact. The antenna jack is meant to power a small external antenna that Sony sells so you do not want to short the two contacts of the jack. Use insulated wire. -- Telamon Ventura, California- Hide quoted text - - Show quoted text - Telamon, FWIW - The Sony AN-LP1 Active Shortwave Loop Antenna requires it's own built-in {Set-of-Batteries} Battery Power to Opperate. The Sony ICF-SW7600GR Radio simply supplies a small 'sensing' Voltage to only "Switch" the AN-LP1 On-and-Off; and nothing more. NOTE - This Switching {On-and-Off} Voltage from the Radio does NOT Supply the needed Power to actually Power the Sony AN-LP1 Active Shortwave Loop Antenna. The Sony ICF-SW7600GR Radio has built-in 'protection' for this small Switching Voltage : When a normal 1/8" Mono Phone Plug is used with an Antenna Wire and Ground Wire. http://www.universal-radio.com/catal...able/0360.html The Sony ICF-SW7600GR Radio can be run on (via) an AC-to-DC Adapter {Wall Wart} while the Sony AN-LP1 Active Shortwave Loop Antenna can be Powered with (via) Two (2) "AA" Batteries = 3 VDC. http://www.universal-radio.com/catalog/sw_ant/3676.html hope this helps - iane ~ RHF What about this 2nd to last line in this link? http://www.universal-radio.com/catalog/sw_ant/3676.html "The AN-LP1 derives power from the radio when connected to models ICF-SW1000T or ICF-SW7600G." -- Telamon Ventura, California |
External Antenna with insulated wire?
On May 26, 1:36 pm, Telamon
wrote: In article . com, RHF wrote: On May 20, 7:23 pm, Telamon wrote: In article .com, RedPenguin wrote: On May 20, 7:13 pm, Telamon wrote: In article . com, RedPenguin wrote: I have a fairly large amount of insulated copper wire, that is solid. MySonyICF-7600GR, has an externalantennajackthat is just basically a headphonejackwith it's connector. Isn't it possibly just to put this insulated wire on a 1/8jackand make fairly okantenna? Yes but it needs to be a monojackwith two conductors tip and barrel. Connect the wire to thejacktip for a single wireantenna. I guess you can't just use any end, I used one from an old pair of headphones that broke for the heck of it to test and it barely got any signal in. Am I wrong about using copper wire like this? If you want something better use two wires, one to the barrel and the other to the tip. Stretch the wires in opposite directions and you have a dipole. Make sure they don't short to each other inside thejack. Can you just buy those ends anywhere? I never heard of a tip and barrel, but I guess I can maybe find them at Radio Shack. I have given you the wrong idea. The tip and barrel are descriptors of the same plug. The stereo head phonejackyou used is a barrel contact, a ring, then a tip. Examine the stereo headphonejackyou have and you will see that there are three contacts (metal areas) separated by two insulators. You only need two contacts, a tip and barrel. The plug you need will be the same size but only have the two contacts missing the small ring contact. Theantennajackis meant to power a small externalantennathatSony sells so you do not want to short the two contacts of thejack. Use insulated wire. -- Telamon Ventura, California- Hide quoted text - - Show quoted text - Telamon, FWIW - TheSonyAN-LP1 Active Shortwave LoopAntenna requires it's own built-in {Set-of-Batteries} Battery Power to Opperate. TheSonyICF-SW7600GR Radio simply supplies a small 'sensing' Voltage to only "Switch" the AN-LP1 On-and-Off; and nothing more. NOTE - This Switching {On-and-Off} Voltage from the Radio does NOT Supply the needed Power to actually Power the SonyAN-LP1 Active Shortwave LoopAntenna. TheSonyICF-SW7600GR Radio has built-in 'protection' for this small Switching Voltage : When a normal 1/8" Mono Phone Plug is used with anAntennaWire and Ground Wire. http://www.universal-radio.com/catal...able/0360.html TheSonyICF-SW7600GR Radio can be run on (via) an AC-to-DC Adapter {Wall Wart} while theSonyAN-LP1 Active Shortwave LoopAntennacan be Powered with (via) Two (2) "AA" Batteries = 3 VDC. http://www.universal-radio.com/catalog/sw_ant/3676.html hope this helps - iane ~ RHF What about this 2nd to last line in this link? http://www.universal-radio.com/catalog/sw_ant/3676.html "The AN-LP1 derives power from the radio when connected to models ICF-SW1000T or ICF-SW7600G." -- Telamon Ventura, California- Hide quoted text - - Show quoted text - Shortly after I got my '7600GR, I hooked it up with the AN-LP1 antenna to see if the '7600GR would power this antenna. It would not. When hooked up to the '7600GR, the AN-LP1 required batteries and required being placed in the "on" position. I'll go home this evening and test out whether the '7600G actually can power up the AN-LP1... It would seem rather surprising if the '7600G did, while the '7600GR did not. Although I'd prefer that neither utilized the antenna jack for powering an external active antenna. I just don't much care for that arrrangement. Junius |
External Antenna with insulated wire?
On May 20, 5:36 pm, RedPenguin wrote:
I have a fairly large amount of insulated copper wire, that is solid. My Sony ICF-7600GR, has an external antenna jack that is just basically a headphone jack with it's connector. Isn't it possibly just to put this insulated wire on a 1/8 jack and make fairly ok antenna? I guess you can't just use any end, I used one from an old pair of headphones that broke for the heck of it to test and it barely got any signal in. Am I wrong about using copper wire like this? Sure, if it is insulated it will make a fine antanna. |
External Antenna with insulated wire?
On Jun 1, 8:49 am, junius wrote:
On May 26, 1:36 pm, Telamon wrote: In article . com, RHF wrote: On May 20, 7:23 pm, Telamon wrote: In article .com, RedPenguin wrote: On May 20, 7:13 pm, Telamon wrote: In article . com, RedPenguin wrote: I have a fairly large amount of insulated copper wire, that is solid. MySonyICF-7600GR, has an externalantennajackthat is just basically a headphonejackwith it's connector. Isn't it possibly just to put this insulated wire on a 1/8jackand make fairly okantenna? Yes but it needs to be a monojackwith two conductors tip and barrel. Connect the wire to thejacktip for a single wireantenna. I guess you can't just use any end, I used one from an old pair of headphones that broke for the heck of it to test and it barely got any signal in. Am I wrong about using copper wire like this? If you want something better use two wires, one to the barrel and the other to the tip. Stretch the wires in opposite directions and you have a dipole. Make sure they don't short to each other inside thejack. Can you just buy those ends anywhere? I never heard of a tip and barrel, but I guess I can maybe find them at Radio Shack. I have given you the wrong idea. The tip and barrel are descriptors of the same plug. The stereo head phonejackyou used is a barrel contact, a ring, then a tip. Examine the stereo headphonejackyou have and you will see that there are three contacts (metal areas) separated by two insulators. You only need two contacts, a tip and barrel. The plug you need will be the same size but only have the two contacts missing the small ring contact. Theantennajackis meant to power a small externalantennathatSony sells so you do not want to short the two contacts of thejack. Use insulated wire. -- Telamon Ventura, California- Hide quoted text - - Show quoted text - Telamon, FWIW - TheSonyAN-LP1 Active Shortwave LoopAntenna requires it's own built-in {Set-of-Batteries} Battery Power to Opperate. TheSonyICF-SW7600GR Radio simply supplies a small 'sensing' Voltage to only "Switch" the AN-LP1 On-and-Off; and nothing more. NOTE - This Switching {On-and-Off} Voltage from the Radio does NOT Supply the needed Power to actually Power the SonyAN-LP1 Active Shortwave LoopAntenna. TheSonyICF-SW7600GR Radio has built-in 'protection' for this small Switching Voltage : When a normal 1/8" Mono Phone Plug is used with anAntennaWire and Ground Wire. http://www.universal-radio.com/catal...able/0360.html TheSonyICF-SW7600GR Radio can be run on (via) an AC-to-DC Adapter {Wall Wart} while theSonyAN-LP1 Active Shortwave LoopAntennacan be Powered with (via) Two (2) "AA" Batteries = 3 VDC. http://www.universal-radio.com/catalog/sw_ant/3676.html hope this helps - iane ~ RHF What about this 2nd to last line in this link? http://www.universal-radio.com/catalog/sw_ant/3676.html "The AN-LP1 derives power from the radio when connected to models ICF-SW1000T or ICF-SW7600G." -- Telamon Ventura, California- Hide quoted text - - Show quoted text - Shortly after I got my '7600GR, I hooked it up with the AN-LP1 antenna to see if the '7600GR would power this antenna. It would not. When hooked up to the '7600GR, the AN-LP1 required batteries and required being placed in the "on" position. I'll go home this evening and test out whether the '7600G actually can power up the AN-LP1... It would seem rather surprising if the '7600G did, while the '7600GR did not. Although I'd prefer that neither utilized the antenna jack for powering an external active antenna. I just don't much care for that arrrangement. Junius- Hide quoted text - - Show quoted text - one error in my earlier post...an-lp1 did not require being placed in the "on' position. "off" is a standby mode and antenna is activated when radio is turned on while hooked up to antenna. for more on the sw7600g (and in every likelihood applicable to the gr version) external antenna jack, see the following (while i can't attest to the accuracy of the info, indications suggest that this individual did his homework): from: http://groups.google.com/group/rec.r...3?dmode=source 1.- The ext. antenna socket is "hot", i.e. powered through a 470 ohm resistence + 100 uH coil. This means that it will deliver approx. 10 mA DC current to the external antenna circuit. The coil is to prevent "polluting" the power circuit of the radio with radio frequency signal. Evidently, the purpose of this arrangement is to "inform" the accessory antenna when the radio is turned on. In case of the Sony AN-LP1 it turns on the antenna without need to use the antenna power switch. However, the 7600G will NOT power the antenna, the 10 mA are not enough to power the amplifier circuit. The power for the AN-LP1 comes from its own batteries. You can use this feature with any active antenna by including a proper power-up circuit - a nice feature if your active antenna is located far away from the radio and you want it to turn on and off automatically when you use your radio. 2.- You can connect any other antenna (provided it is correctly designed and installed) to the EXT ANT socket without risking to damage the radio. However, if the external antenna circuit has low DC resistence, it will drain some current from the radio. Therefore, you will experiment slightly higher power consumption from your batteries (up to 10% at normal listening volume). You can avoid this current drain by including a small ceramic capacitor (1000 pF) in series with the antenna circuit, however I don't think it is really necessary. 3.- The 7600G has some basic protection build into the EXT ANT input circuit. Any static buid-up will be drained off via the power circuit mentioned in point 1. It also includes a diode pair (1SS123) to protect the input RF amplifier FET from damage due to too strong signals or an accidental connection of the antenna to a low voltage AC source. IT IS NOT A SUBSTITUTE FOR A PROPER ANTENNA GROUNDING AND LIGHTNING PROTECTION IF YOU USE AN EXTERNAL ANTENNA - YOU STILL NEED TO PROPERLY GROUND YOUR EXTERNAL ANTENNA AND PROTECT YOUR RADIO, but it builds some margin of safety to protect the front-end FET - a common problem with the Sony 2001D (2010). |
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