[TowerTalk] Carolina Windom with IC-737

[Chuck]

Actually if you run the numbers using the equation from the ARRL antenna handbook you will find that using open wire feeders your efficiency will be pretty damn good at HF. If it was not for the fact that the solid state rigs blow their corks under high VSWR conditions you could connect directly to the open wire feeder and run 80% efficiency.

Open wire feeders have losses well below any coax made to date and that accounts for the reason you can stuff 50 wastts into it and radiate 40 watts easily. So you lose 10 watts. You would have to knock yourself down to 12.5 watts radiated before being able to see "1 S Unit difference".

Read Walt Maxwells book Reflections.

Chuck WD4HXG




 >  From: bill rubin<mailto:brubin2010 at gmail.com> 
>  To: Mike, K6BR<mailto:noddy1211 at sbcglobal.net> 
>  Cc: towertalk at contesting.com<mailto:towertalk at contesting.com> 
>  Sent: Wednesday, September 05, 2007 6:29 PM
>  Subject: Re: [TowerTalk] Carolina Windom with IC-737
>
>
>  Guys think about what you are saying SWR 8:1 !!   So what does the tuner
>  do?  , tune the antenna ?  or Presents a match for the radio to operate ?
>  If you tune an antenna and have an SWR of 8:1  how much do you think
>  radiates ?
>
>  The bottom line here is that just because you have a tuner does not mean you
>  have efficiency.
>  Any good tuner will tune that windom,  but with SWRs over 3.5:1  your not
>  doing much to get a signal out.
>
>  73's  Bill N1HWC
>
>
>
>  On 9/5/07, Mike, K6BR <noddy1211 at sbcglobal.net<mailto:noddy1211 at sbcglobal.net>> wrote:
>  >
>  > I am not sure that the any auto tuner will tune a Windom, I have Carolina
>  > Windom 160 and have SWR's around 8:1 on some frequencies.
>  >
>  > Mike
>  >
>  > -----Original Message-----
>  >
>  > Hi!
>  >
>  >
>  >
>  > I'm very interested in the RadioWorks Carolina Windom 80 but not sure if
>  > my
>  > tuners will handle it.  My rig is ICOM IC-737 which I like to run
>  > barefoot.
>  > I also use the IC-2KL with the AT-500 for higher power apps.  Question is:
>  > will both of these tuners handle the tuning requirements for this antenna?
>  > Greatly appreciate any information.
>  >
>  >
>  >
>  > 73,
>  >
>  > Reid-W0FVR
>  >
>  > areidmaertz at sio.midco.net<mailto:areidmaertz at sio.midco.net>
>  >
>  > _______________________________________________
>  >
>  >
>  >
>  > _______________________________________________
>  > TowerTalk mailing list
>  > TowerTalk at contesting.com<mailto:TowerTalk at contesting.com>
>  > http://lists.contesting.com/mailman/listinfo/towertalk<http://lists.contesting.com/mailman/listinfo/towertalk>
>  >
>  > _______________________________________________
>  >
>  >
>  >
>  > _______________________________________________
>  > TowerTalk mailing list
>  > TowerTalk at contesting.com<mailto:TowerTalk at contesting.com>
>  > http://lists.contesting.com/mailman/listinfo/towertalk<http://lists.contesting.com/mailman/listinfo/towertalk>
>  >
>  _______________________________________________
>
>
>
>  _______________________________________________
>  TowerTalk mailing list
>  TowerTalk at contesting.com<mailto:TowerTalk at contesting.com>
>  http://lists.contesting.com/mailman/listinfo/towertalk<http://lists.contesting.com/mailman/listinfo/towertalk>
>_______________________________________________
>
>
>
>_______________________________________________
>TowerTalk mailing list
>TowerTalk at contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk