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#11
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Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use
David wrote: On Thu, 29 Dec 2005 16:30:58 -0500, dxAce wrote: wrote: The measured radiation resistance can be as high as 5000 ohms or as low as 2 or 3 ohms..." yep.. That's why I wonder about the popularity of these 9-to-1 baluns. generally a waste of money I think... Some bands they might help, some might hurt... The reason I think it's a waste of time is rarely are they actually needed to improve the s/n ratio. Hardly a waste of money, they actually DO work. Been using them here for a good number of years. dxAce Michigan USA Wow. Steve and I agree on something. Call Kofi Annan. Why? You got some oil you'd like to trade for food? dxAce Michigan USA |
#12
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Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector?
On Thu, 29 Dec 2005 19:03:41 -0500, dxAce
wrote: Why? You got some oil you'd like to trade for food? I haven't paid too much attention to it, but I think the oil was never meant to be traded directly for food. I think the name means that Iraq was allowed to sell oil in order to be able to afford imported edibles. |
#13
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Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector?
David - You are right ~ RHF
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#14
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Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector?
"dxAce" wrote in message ... wrote: The measured radiation resistance can be as high as 5000 ohms or as low as 2 or 3 ohms..." yep.. That's why I wonder about the popularity of these 9-to-1 baluns. generally a waste of money I think... Some bands they might help, some might hurt... The reason I think it's a waste of time is rarely are they actually needed to improve the s/n ratio. Hardly a waste of money, they actually DO work. Been using them here for a good number of years. I put one together last year, and yes, I agree with Ace. Of course, sealing the darn thing properly to prevent leakage into the case is important too. Had to go back a couple of times to reseal it to make sure it works, but they actually do work. --Mike L. |
#15
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Inside view of the RF Systems Magnetic Longwire Balun ( MLB )
On 30 Dec 2005 11:35:41 -0800, "RHF"
wrote: For One and All, Inside view of the RF Systems Magnetic Longwire Balun ( MLB ) http://www.remeeus.nl/english/hamradio/mlb.htm http://groups.yahoo.com/group/Shortw...a/message/7245 RF Systems Magnetic Longwire Balun ( MLB ) http://www.thiecom.de/mlb.htm http://www.universal-radio.com/catalog/sw_ant/1484.html http://www.suertenich.com/html/radio...ire_balun.html http://www.universal-radio.com/catal.../4067chrt.html http://www.universal-radio.com/catalog/sw_ant/1465.html http://www.thiecom.de/mlb_1.jpg images and Ideas - iane ~ RHF . . . . . Now THAT is a rip-off. |
#16
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Inside view of the RF Systems Magnetic Longwire Balun ( MLB )
On 30 Dec 2005 12:30:48 -0800, "RHF"
wrote: DX Ace, At the Price Mark-Ups - I am surprised at a Chinese Manufacture like Tecsun or Degen has not gotten into building and offering a reverse-engineered-product like the Systems Magnetic Longwire Balun ( MLB ) ? ? ? http://www.universal-radio.com/catalog/sw_ant/1484.html Also the RF Systems MLBA-MK1 or MLBA-MK2 Antennas http://www.universal-radio.com/catalog/sw_ant/1465.html Figure with the Chinese Manufacturing Cost being 1/10th of the European's. And the Chinese made Items selling on eBay for 1/3 to 1/2 the Current RF Systems USA Price. jm2cw ~ RHF . These guys charge fair prices. http://www.geocities.com/qrp_baluns/product.html |
#17
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Sealing a Matching Transformer {Balun} for the OutSide Weather
On 30 Dec 2005 11:59:23 -0800, "RHF"
wrote: For One and All, I use this stuff. I add a wrap of Scotch 33+ to keep the sealant dust free. http://www.coaxseal.com/How%20to%20Use%20Coax-Seal.htm |
#18
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Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector?
Michael Lawson wrote: I put one together last year, and yes, I agree with Ace. Of course, sealing the darn thing properly to prevent leakage into the case is important too. Had to go back a couple of times to reseal it to make sure it works, but they actually do work. --Mike L. ----------------------------- I have found that using the black plastic 35MM fil canisters filled with silicon seal works very well. The Kodak ones last much longer then the other I have checked. Don't use the clear, or translucent ones as they will fail in a single season. I us the plastic ones for mini DXpeditions. If you are lucky enough to hae an aluminum 33MM cnaister they work great! My dad was an advanced photographer so I have a few of the aluminium and even fewer of the even older painted steel units. I have an aluminium unit that has been up for ~10 years with no sign of failure. Terry |
#19
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Single Wire Antenna {Longwire / Random Wire Antenna} - What To Use : Antenna Tuner? and/or Pre-Selector?
David wrote:
I haven't paid too much attention to it, but I think the oil was never meant to be traded directly for food. I think the name means that Iraq was allowed to sell oil in order to be able to afford imported edibles. Actually, Iraq wasn't supposed to get any money out of it until after the program ended. The UN was to get the money and use it to send food, medicine, and supplies, and build schools, electrical power stations and the like. Instead the money went to enrich Kofi and his kid and Saddam, and to buy Iraq more embargoed armaments. -- If John McCain gets the 2008 Republican Presidential nomination, my vote for President will be a write-in for Jiang Zemin. |
#20
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Single Wire Antenna {Longwire / Random Wire Antenna} - What To...
A bunch of years ago,I used an old raggity fifty foot long electric
extension line for an antenna for one of my old Shortwave radios.What I did was connected the two wires (I didn't fool with the ground wire) of the line together with a piece of wire and I draped the line around over piles of my junk in my house,I ran the line from the radio by my couch in my living room and through my dining room and through my kitchen and on down the hall and back through the living to near my front door.It worked pretty good too. Not to be too off topic but, www.devilfinder.com TripSmarter.com Bulletin Boards New Orleans Street Cars are Back I was lurking in a New Orleans online chatroom a few afternoons ago.A woman in New Orleans said her toofs are hurting her.I piped up and said,Well,at least you have some toofs. cuhulin |
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