Re: RE: [Elecraft] VP6DX Success Due to K3's or Antennas?
Ron D'Eau Claire wrote: Being on the edge of a huge salt-water pond gives VP6DX's verticals an advantage no land lubber can hope for. There's a lot of interaction between the electromagnetic wave and the earth from a vertical antenna for many wavelengths from the antennas. Real earth - dirt - is a terrible medium. It's sort of the world's worst dielectric, even when soaking wet. But salt water is a different story. It's a very efficient medium for the RF to interact with. There's a reason why so many DX-peditions like to find themselves on a small rock in the middle of the ocean, and it isn't just for the view. I'd bet VP6DX success is a combination of factors, salt water and outstanding radios being two of them. That they are operating multiple radios on the small island attests to the value of the K3. I also know several of the ops [one has my last name :-) ] and they're all about as good as you can get. That's another major factor. They sure are loud here in N. Cal. VP6DI was too. 73, Fred K6DGW - Northern California Contest Club - CU in the 2008 Cal QSO Party 4-5 Oct 08 - www.cqp.org ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] VP6DX Success Due to K3's or Antennas?
The Mojo is in the sea water which has a conductivity of about 500 millimhos/per meter. The best of soils are about 30 millimhos/meter and average soil about 5 mmhos/meter. A small island is as near to a perfect ground plane as you will find. --- Björn Mohr [EMAIL PROTECTED] wrote: I agree! Although the K3 is a great radio, 90% of the mojo is antennas and location. If you are really interested in the secret of vertical antennas near salt water check out this site; http://k2kw.com/k5k/dxcomp.htm 73 de Björn /SM0MDG On 080222 5:41 , Ron D'Eau Claire [EMAIL PROTECTED] wrote: Being on the edge of a huge salt-water pond gives VP6DX's verticals an advantage no land lubber can hope for. There's a lot of interaction between the electromagnetic wave and the earth from a vertical antenna for many wavelengths from the antennas. Real earth - dirt - is a terrible medium. It's sort of the world's worst dielectric, even when soaking wet. But salt water is a different story. It's a very efficient medium for the RF to interact with. There's a reason why so many DX-peditions like to find themselves on a small rock in the middle of the ocean, and it isn't just for the view. Ron AC7AC -Original Message- I don't want to spoil the Elecraft Mojo theory, but does anyone have any details, other thqan what is on the VP6DX web site, on what antennas they are using with the k3's? Do the vertical dipoles have parasitic elements? Are they using low-loss coax? Etc. Inquiring minds would like to know. 73, Henry - K4TMC K3 #98 ** ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com Willis 'Cookie' Cooke K5EWJ ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] VP6DX Success Due to K3's or Antennas?
For verticals there's a 2 or 3-fold effect: 1a vertical over sea water will have very much reduced losses in the near field, ie close to the antenna so increasing its efficiency, ie raising the 'power output' compared to a land situation 2the increased conductivity in the far field reduces losses to the wave travelling across the surface before it launches into space 3the long travel over the sea water means a lower angle than across land and therefore less bounces to get to you on the other side of the world, so less losses on the way So, the signal is much bigger at your end and your signal has less losses getting to them. David G3UNA The Mojo is in the sea water which has a conductivity of about 500 millimhos/per meter. The best of soils are about 30 millimhos/meter and average soil about 5 mmhos/meter. A small island is as near to a perfect ground plane as you will find. --- Björn Mohr [EMAIL PROTECTED] wrote: I agree! Although the K3 is a great radio, 90% of the mojo is antennas and location. If you are really interested in the secret of vertical antennas near salt water check out this site; http://k2kw.com/k5k/dxcomp.htm 73 de Björn /SM0MDG On 080222 5:41 , Ron D'Eau Claire [EMAIL PROTECTED] wrote: Being on the edge of a huge salt-water pond gives VP6DX's verticals an advantage no land lubber can hope for. There's a lot of interaction between the electromagnetic wave and the earth from a vertical antenna for many wavelengths from the antennas. Real earth - dirt - is a terrible medium. It's sort of the world's worst dielectric, even when soaking wet. But salt water is a different story. It's a very efficient medium for the RF to interact with. There's a reason why so many DX-peditions like to find themselves on a small rock in the middle of the ocean, and it isn't just for the view. Ron AC7AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] VP6DX Success Due to K3's or Antennas?
I don't want to spoil the Elecraft Mojo theory, but does anyone have any details, other thqan what is on the VP6DX web site, on what antennas they are using with the k3's? Do the vertical dipoles have parasitic elements? Are they using low-loss coax? Etc. Inquiring minds would like to know. 73, Henry - K4TMC K3 #98 ** Ideas to please picky eaters. Watch video on AOL Living. (http://living.aol.com/video/how-to-please-your-picky-eater/rachel-campos-duffy /2050827?NCID=aolcmp0030002598) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] VP6DX Success Due to K3's or Antennas?
Being on the edge of a huge salt-water pond gives VP6DX's verticals an advantage no land lubber can hope for. There's a lot of interaction between the electromagnetic wave and the earth from a vertical antenna for many wavelengths from the antennas. Real earth - dirt - is a terrible medium. It's sort of the world's worst dielectric, even when soaking wet. But salt water is a different story. It's a very efficient medium for the RF to interact with. There's a reason why so many DX-peditions like to find themselves on a small rock in the middle of the ocean, and it isn't just for the view. Ron AC7AC -Original Message- I don't want to spoil the Elecraft Mojo theory, but does anyone have any details, other thqan what is on the VP6DX web site, on what antennas they are using with the k3's? Do the vertical dipoles have parasitic elements? Are they using low-loss coax? Etc. Inquiring minds would like to know. 73, Henry - K4TMC K3 #98 ** ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] VP6DX Success Due to K3's or Antennas?
I agree! Although the K3 is a great radio, 90% of the mojo is antennas and location. If you are really interested in the secret of vertical antennas near salt water check out this site; http://k2kw.com/k5k/dxcomp.htm 73 de Björn /SM0MDG On 080222 5:41 , Ron D'Eau Claire [EMAIL PROTECTED] wrote: Being on the edge of a huge salt-water pond gives VP6DX's verticals an advantage no land lubber can hope for. There's a lot of interaction between the electromagnetic wave and the earth from a vertical antenna for many wavelengths from the antennas. Real earth - dirt - is a terrible medium. It's sort of the world's worst dielectric, even when soaking wet. But salt water is a different story. It's a very efficient medium for the RF to interact with. There's a reason why so many DX-peditions like to find themselves on a small rock in the middle of the ocean, and it isn't just for the view. Ron AC7AC -Original Message- I don't want to spoil the Elecraft Mojo theory, but does anyone have any details, other thqan what is on the VP6DX web site, on what antennas they are using with the k3's? Do the vertical dipoles have parasitic elements? Are they using low-loss coax? Etc. Inquiring minds would like to know. 73, Henry - K4TMC K3 #98 ** ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
