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#1
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Folks,
I have purchased a Sangean ATS-909 World Receiver. It is equipped with an internal ferrite antenna för MW and LW, and a telescope antenna for SW and FM. It also comes with a portable SW antenna (ANT-60), seven meters long. Is this external antenna generally sufficient for SW reception, or should I get a different antenna? If yes, is there a solution that doesn't cost all that much money? I have a copy of the 2009 World Radio TV Handbook, and they are talking about a Wellbrook ALA-1530+ loop antenna, and let me tell you, that one is well past my budget, because it costs $466... I am looking for something a lot cheaper... :-) If it is recommended to replace the ANT-60, that is. PJ |
#2
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PJ,
I've discovered there is no best antenna for everyone for shortwave listening. Ignore the trolls here, start off with your wire antenna, then experiment if you wish. I've tried a few things over the past few weeks and for me, just running a wire along the ground about 60 feet works best for me. I guess the only certain thing is that an antenna that runs outside will work better than an inside antenna. If you can't run one outside, try to put it by a window or up high in your house/apartment. Experimenting is part of the fun, just google around, play around, and have hours of fun on your new radio. I only in the last few weeks have rediscovered listening to SW radio. Happy listening. |
#3
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In article
, SC Dxing wrote: PJ, I've discovered there is no best antenna for everyone for shortwave listening. Ignore the trolls here, start off with your wire antenna, then experiment if you wish. I've tried a few things over the past few weeks and for me, just running a wire along the ground about 60 feet works best for me. I guess the only certain thing is that an antenna that runs outside will work better than an inside antenna. If you can't run one outside, try to put it by a window or up high in your house/apartment. Experimenting is part of the fun, just google around, play around, and have hours of fun on your new radio. I only in the last few weeks have rediscovered listening to SW radio. Again I edited the news group header. By all means experiment with antennas. You can learn a lot this way but what you find that "works" for you is dependent on your local noise environment. The antenna jack has two contacts that work with the plug barrel and tip. The barrel is the radio ground. You can use these two contacts with a complete antenna like a dipole or loop antenna or you can connect a single wire antenna to the tip and the barrel to a ground rod or wire on the ground under the single wire. If your noise environment is fairly low then this could work well. If not then you can try other antenna types. -- Telamon Ventura, California |
#4
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On Dec 23, 8:06*pm, SC Dxing wrote:
PJ, I've discovered there is no best antenna for everyone for shortwave listening. Ignore the trolls here, start off with your wire antenna, then experiment if you wish. I've tried a few things over the past few weeks and for me, just running a wire along the ground about 60 feet works best for me. I guess the only certain thing is that an antenna that runs outside will work better than an inside antenna. If you can't run one outside, try to put it by a window or up high in your house/apartment. Experimenting is part of the fun, just google around, play around, and have hours of fun on your new radio. I only in the last few weeks have rediscovered listening to SW radio. Happy listening. SC, Did you inductively couple the antenna to your whip? If you didn't you will notice a marked improvement if you do it that way. Just in case you don't know (I think I posted this already) grab you some wire (I use 11 or 12 gauge) and tightly wrap five-seven turns around your whip and cut the rest off. Pull about an inch of the plastic off and clip onto that. At one time I was doing the "exact" thing you are except I think my stretch of wire was 70ft. But I picking up a lot rf here and there, pretty high noise floor on some bands. When I coupled it that way the noise floor dropped to nothing. |
#5
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On Dec 23, 9:46*am, PJ wrote:
Folks, I have purchased a Sangean ATS-909 World Receiver. It is equipped with an internal ferrite antenna för MW and LW, and a telescope antenna for SW and FM. It also comes with a portable SW antenna (ANT-60), seven meters long. Is this external antenna generally sufficient for SW reception, or should I get a different antenna? If yes, is there a solution that doesn't cost all that much money? I have a copy of the 2009 World Radio TV Handbook, and they are talking about a Wellbrook ALA-1530+ loop antenna, and let me tell you, that one is well past my budget, because it costs $466... I am looking for something a lot cheaper... :-) If it is recommended to replace the ANT-60, that is. PJ PJ, So your objective is to 'buy' a relatively low cost Antenna for Shortwave Radio Listening (SWL) to use with your Sangean ATS-909 World Receiver. Check-Out the / Sangean ATS-909 Users Group -aka- RadioShack DX-398 Users Group http://groups.yahoo.com/group/DX398/ Consider using a "Portable Wire Antenna" with your Sangean ATS-909 AM/FM Shortwave Radio : http://www.geocities.com/n2uhc/portablewire.html * WebPage presented by Tom Sevart, N2UHC http://groups.google.com/group/rec.r...c73c4c94625fc7 http://groups.google.com/group/rec.r...89c8fd6fcb38f2 First "About" the Antenna Input of the Sangean ATS-909 AM/FM Shortwave Radio : The Sangean ATS-909 uses a 1/8" Stereo Jack for the External Antenna Input. Barrel = Circuit-Board-Ground (RF Signal Ground) Tip = Shortwave Antenna RF Signal Input Middle-Ring = AM/MW Antenna RF Signal Input READY-MADE - Shortwave Listener (SWL) Antenna that fits into the 45 Foot Long Range is the Par Electronics EF-SWL Antenna. [~$75US] It come with the Matching Transformer and 45 Feet of Flex-Weave Wire Antenna Element; and all you need to do is Install your Ground Rod; Rig the Wire Antenna Element; and Attach your Coax Cable. http://www.parelectronics.com/swl_end.htm http://www.grove-ent.com/ANT8.html http://www.universal-radio.com/catalog/sw_ant/2205.html The Par EF-SWL is a moderate size Inverted "L" Antenna with 'low noise' characteristics : The PAR is the simplest Antenna for most of these 'portable' AM/FM Shortwave Radios and lends itself to the Inverted "L" Antenna configuration of about 45 Feet long with a 15 Foot Vertical-Up-Leg and a 30 Foot Horizontal-Out-Arm. With an Eight Ground Rod at the base and a Coax Cable feed-in-line. NOTE - Your biggest problem with using a Coax Cable with your Shortwave Antenna is coming up with an "Adapter" or Jumper Cable from the Coax Connector to the Radio's 1/8" Stereo Jack. Here is another 'low cost' SWL Antenna listed on eBay "Super Longwire All Band SW. Antenna and 9:1 Balun" http://cgi.ebay.com/_W0QQitemZ180315835723 * Has 80 Feet of Antenna Wire with a 9:1 Matching Transformer; plus 50 Feet of Coax Cable. * Rig as much of the 80 Feet of Antenna Wire in the Inverted "L" Configuration * Add an 8-foot Ground Rod * Run the Coax Cable to you Radio hope this helps - iane ~ RHF |
#6
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On Dec 24, 3:36*am, RHF wrote:
On Dec 23, 9:46*am, PJ wrote: Folks, I have purchased a Sangean ATS-909 World Receiver. It is equipped with an internal ferrite antenna för MW and LW, and a telescope antenna for SW and FM. It also comes with a portable SW antenna (ANT-60), seven meters long. Is this external antenna generally sufficient for SW reception, or should I get a different antenna? If yes, is there a solution that doesn't cost all that much money? I have a copy of the 2009 World Radio TV Handbook, and they are talking about a Wellbrook ALA-1530+ loop antenna, and let me tell you, that one is well past my budget, because it costs $466... I am looking for something a lot cheaper... :-) If it is recommended to replace the ANT-60, that is. PJ PJ, So your objective is to 'buy' a relatively low cost Antenna for Shortwave Radio Listening (SWL) to use with your Sangean ATS-909 World Receiver. Check-Out the / Sangean ATS-909 Users Group -aka- RadioShack DX-398 Users Grouphttp://groups.yahoo.com/group/DX398/ Consider using a "Portable Wire Antenna" with your Sangean ATS-909 AM/FM Shortwave Radio :http://www.geocities.com/n2uhc/portablewire.html * WebPage presented by Tom Sevart, N2UHChttp://groups.google.com/group/rec.radio.shortwave/msg/09c73c4c94625fc7http://groups.google.com/group/rec.radio.shortwave/msg/a789c8fd6fcb38f2 First "About" the Antenna Input of the Sangean ATS-909 AM/FM Shortwave Radio : The Sangean ATS-909 uses a 1/8" Stereo Jack for the External Antenna Input. Barrel = Circuit-Board-Ground (RF Signal Ground) Tip = Shortwave Antenna RF Signal Input Middle-Ring = AM/MW Antenna RF Signal Input READY-MADE - Shortwave Listener (SWL) Antenna that fits into the 45 Foot Long Range is the Par Electronics EF-SWL Antenna. [~$75US] It come with the Matching Transformer and 45 Feet of Flex-Weave Wire Antenna Element; and all you need to do is Install your Ground Rod; Rig the Wire Antenna Element; and Attach your Coax Cable.http://www.parelectronics.com/swl_en..._ant/2205.html The Par EF-SWL is a moderate size Inverted "L" Antenna with 'low noise' characteristics : The PAR is the simplest Antenna for most of these 'portable' AM/FM Shortwave Radios and lends itself to the Inverted "L" Antenna configuration of about 45 Feet long with a 15 Foot Vertical-Up-Leg and a 30 Foot Horizontal-Out-Arm. *With an Eight Ground Rod at the base and a Coax Cable feed-in-line. NOTE - Your biggest problem with using a Coax Cable with your Shortwave Antenna is coming up with an "Adapter" or Jumper Cable from the Coax Connector to the Radio's 1/8" Stereo Jack. Here is another 'low cost' SWL Antenna listed on eBay "Super Longwire All Band SW. Antenna and 9:1 Balun"http://cgi.ebay.com/_W0QQitemZ180315835723 * Has 80 Feet of Antenna Wire with a 9:1 Matching Transformer; plus 50 Feet of Coax Cable. * Rig as much of the 80 Feet of Antenna Wire in the Inverted "L" Configuration * Add an 8-foot Ground Rod * Run the Coax Cable to you Radio hope this helps - iane ~ RHF *. SWL -Newbies- Installing an Inverted "L" Antenna : The Right-Way ! http://groups.google.com/group/rec.r...ca62e0c0e838ea Wellbrook "Low Noise Antenna" 'design concept' using two components they manufactu the Universal Magnetic Balun (UMB) and the Antenna Feed Isolator (Feed-Line-Isolator). |
#7
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ALA-1530+ loop antenna, and let me tell you, that one is well past my
budget, because it costs $466... I am looking for something a lot cheaper... :-) If it is recommended to replace the ANT-60, that is. This is my favorite: http://www.antenna.it/military/log-periodic.htm But seriously folks, the cheapest for me was busting open a junk TV for the deflection coils. A qrp type ham antenna tuner will certainly help. Easy to build L type by using an AM tuning cap and hind wound coil on toilet paper roll. Use a piece of scrap brass for a slider. Put the whole thing on a block of wood and use clip leads to change it around for the best signal. The earphone jack can often be used for a ground point. |
#8
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On Dec 23, 9:46*am, PJ wrote:
Folks, I have purchased a Sangean ATS-909 World Receiver. It is equipped with an internal ferrite antenna för MW and LW, and a telescope antenna for SW and FM. It also comes with a portable SW antenna (ANT-60), seven meters long. Is this external antenna generally sufficient for SW reception, or should I get a different antenna? If yes, is there a solution that doesn't cost all that much money? I have a copy of the 2009 World Radio TV Handbook, and they are talking about a Wellbrook ALA-1530+ loop antenna, and let me tell you, that one is well past my budget, because it costs $466... I am looking for something a lot cheaper... :-) If it is recommended to replace the ANT-60, that is. PJ http://www.wellbrook.uk.com/ALA100b.html With a bit of hacking, the Wellbrook ALA 100 is as good as any of the shortwave antennas they sell. It is just the amplifier. You have to roll your own loop. The ALA100 is the lowest cost welbrook. At the current exchange rate, the ala100 is a over $200. I have made a few loops with this amp. I have a 2ftx2ft out of copper pipe for direction finding. I have 4ft x 6ft copper pipe for regular use. It's really stupid big and will eventually be reduced to the original 4ftx4ft. I have a few portable designs that are around 40ft worth of wire. The wellbrook loops are just amazing. All that said, the ATS909 probably can't handle that much signal. It would make sense to use one with a portable shortwave radio. |
#10
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flashdrive wrote:
... Has anyone ever successfully reverse engineered the pre-amp of a Wellbrook loop? It might be possible to dissolve the encapsulating material (epoxy?) to reveal the PCB and componants. Otherwise a medical scanner (seriously) might reveal some useful information. My question would be, "Why go to the trouble?" Indeed, grab a DC - 1Ghz MMIC device (make sure you don't get an SMC component, unless you like soldering under a microscope), stick a proper filter for the freqs/bands in front of it, and feed its' input with a well designed loop ... if you need EXTREME gain, you can cascade a couple of MMICs. Regards, JS |
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